Gossen Metrawatt SSP 120-20, SSP 120-40, SSP 120-80, 32 N 20 RU 10 P, 32 N 40 RU 6 P User guide

...

Download

Operating Instructions

SSP-KONSTANTER 32 N

Series SSP 120, SSP 240 and SSP 320 Programmable Power Supplies

3-349-267-03

11/5.17

2 GMC-I Messtechnik GmbH

Contents Page

I Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

II Warnings and Safety Precautions . . . . . . . . . . . . . . . . . . . . .4

1 Technical Description. . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.1 Features and Range of Applications . . . . . . . . . . . . . . . . . . .5

1.2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.3 Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.4 Functional Principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.5 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.5.1 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.5.2 Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1.5.3 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

2 Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

2.1 Preparing for Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .12

2.1.1 Installing the IEEE 488 Interface Module . . . . . . . . . . . . .12

2.1.2 Installation to 19'' Device Racks . . . . . . . . . . . . . . . . . . .12

2.1.3 Combining Benchtop Devices . . . . . . . . . . . . . . . . . . . . .13

2.1.4 Connection to the Mains . . . . . . . . . . . . . . . . . . . . . . . . .13

2.1.5 Connecting Power Consumers. . . . . . . . . . . . . . . . . . . . .13

2.1.6 Connection to Computer Interfaces . . . . . . . . . . . . . . . . . 13

2.2 Switching the Instrument On . . . . . . . . . . . . . . . . . . . . . . .14

4.14 INCR <> and DECR <> Keys . . . . . . . . . . . . . . . . . . . .47

4.15 Device RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.16

Selecting Remote and Local Control Modes . . . . . . . . . . . . . . . . . 47

5 Analog Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

5.1 Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . .48

5.2 Auto-Sensing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

5.3 Status Signal Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

5.4 Regulating Output Voltage . . . . . . . . . . . . . . . . . . . . . . . .50

5.5 Regulating Output Current . . . . . . . . . . . . . . . . . . . . . . . .50

5.6 Voltage Monitoring Output . . . . . . . . . . . . . . . . . . . . . . . .51

5.7 Current Monitoring Output . . . . . . . . . . . . . . . . . . . . . . . .51

5.8 Trigger Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

5.9 Parallel Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

5.9.1 Direct Parallel Connection . . . . . . . . . . . . . . . . . . . . . . . .52

5.9.2 Master-Slave Parallel Connection . . . . . . . . . . . . . . . . . .54

5.10 Series Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

5.10.1 Direct Series Connection. . . . . . . . . . . . . . . . . . . . . . . . .55

5.10.2 Master-Slave Series Connection . . . . . . . . . . . . . . . . . . .56

5.11 Varying the Internal Output Resistance Value . . . . . . . . . . .57

3 Controls, Display Elements and Terminals . . . . . . . . . . . 16

4 Manual Operation and Device Functions . . . . . . . . . . . .20

4.1 Menu Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.2 Setting Output Voltage and Output Current . . . . . . . . . . . . . 20

4.2.1 Direct Selection (rotary knobs and scroll keys) . . . . . . . . .20

4.2.2 Pre-selected Setting (ENTER, scroll keys) . . . . . . . . . . . .21

4.3

Switching the Power Output On and Off . . . . . . . . . . . . . . . . . . . .21

4.4

Limiting the Allowable Working Range: Ulim, Ilim . . . . . . . . . . . . .22

4.5 Description of OVP and OCP Protection Functions. . . . . . . .22

4.6 Display of Momentary Output Values Uout, Iout and Pout. . .23

4.7 Operating Menu via the FUNCTION Key . . . . . . . . . . . . . . .23

4.7.1 SET – “Setup” Function Group . . . . . . . . . . . . . . . . . . . .25

4.7.2 AnIF – “Analog Interface” Function Group . . . . . . . . . . . .28

4.7.3 SEq – The Sequence Function Group. . . . . . . . . . . . . . . .30

4.7.4 buS – The “Interface” Function Group . . . . . . . . . . . . . . .38

4.8 Settings with the <SELECT> Key

4.8.1 In the Basic Function . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.8.2

4.8.3

4.8.4 Setting Resolution with the <SELECT> Key . . . . . . . . . . .41

4.9 Storing Data with the <SAVE> Key . . . . . . . . . . . . . . . . . .41

4.9.1 Saving Basic Device Settings. . . . . . . . . . . . . . . . . . . . . .41

4.9.2 Saving Data to a Memory Location. . . . . . . . . . . . . . . . . .41

4.9.3

4.9.4 Inserting a Memory Location . . . . . . . . . . . . . . . . . . . . .43

4.9.5 Deleting a Memory Location . . . . . . . . . . . . . . . . . . . . . .44

4.9.6 Deleting the Contents of a Memory Location . . . . . . . . . .45

4.10 Memory Recall with the <RCL> Key. . . . . . . . . . . . . . . . . .45

4.10.1 Recall from SETUP Memory. . . . . . . . . . . . . . . . . . . . . . .45

4.10.2 Recall from SEQUENCE Memory . . . . . . . . . . . . . . . . . . .46

4.11 Disabling Front Panel Controls . . . . . . . . . . . . . . . . . . . . .46

4.12 <The ENTER> Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.13 The <CE/LOCAL> Key . . . . . . . . . . . . . . . . . . . . . . . . . . .46

During a Sequence Run and with Step-by-Step Control. . . . . . . .40

Display of Stored Data Upon Execution of <RCL>. . . . . . . . . . . .40

Clearing the Contents of a Defined Memory Range . . . . . . . . . . 42

. . . . . . . . . . . . . . . . . . . . . .40

6 Operating Commands . . . . . . . . . . . . . . . . . . . . . . . . . . .58

6.1 Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

6.2 IEEE 488 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . .60

6.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

6.4 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

6.5 Status and Events Management. . . . . . . . . . . . . . . . . . . . .77

7 Adjusting the SSP KONSTANTER

CAL – “Calibration” Function Group . . . . . . . . . . . . . . . .79

7.1 General Information and Definition of Terms . . . . . . . . . . . .79

7.2 Adjusting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

7.3 Self-Test Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

8 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

8.1 Adjustable Functions and Parameters . . . . . . . . . . . . . . . .83

8.2 Queriable Functions and Parameters . . . . . . . . . . . . . . .85

8.3 Query Commands for Status and Events Management . .86

8.4 Overview of Menu Functions . . . . . . . . . . . . . . . . . . . . .87

8.5 Memory Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

8.6 Indication of Operating States . . . . . . . . . . . . . . . . . . . . . .89

8.7 System Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

8.6 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

9 Order Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

10 Repair and Replacement Parts Service,

Calibration Center* and Rental Service . . . . . . . . . . . . .92

11 Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

GMC-I Messtechnik GmbH 3

I Initial Inspection

Important Warnings

Immediately after receipt, unpack the KONSTANTER and all included accessories, and inspect for damage and completeness.

Unpacking

Great care must be exercised when removing the electronic device from the package.

☞ Pull the KONSTANTER from its package. ☞ In doing so, do not grasp rotary knobs, terminals or jacks in

order to avoid damage.

☞ Do not allow the KONSTANTER to fall out of the packaging.

Controls, displays, terminals and internal components might otherwise be damaged.

☞ Do not, under any circumstances, touch the KONSTANTER’s

electrical terminals before grounding yourself to the housing in order to neutralize potential differences. Sensitive electronic circuitry might otherwise be damaged as a result of electrostatic discharge.

☞ The KONSTANTER is delivered in recyclable packaging, which

provides for adequate protection during transport as substantiated by testing. If the instrument is repacked at a later point in time, the same packaging or its equivalent must be used.

Visual Inspection

☞

Compare the order number or type designation included on the packaging and/or the serial plate with the particulars shown in the shipping documents.

☞ Make sure that all accessory components have been

included (see chapter 1.3, “Options and Accessories”).

☞ Inspect the packaging, as well as mechanical instrument

and accessory components for possible transport damage.

Complaints

If damage is discovered, immediately file a claim with the freight forwarder (save the packaging!). If other defects are detected, or in the event that service is required, inform your local representative, or contact us directly at the address included in the last page of this handbook.

II Warnings and Safety Precautions

The KONSTANTER has been manufactured and tested in accordance with the electrical safety regulations listed under “Technical Data” as a safety class I device, and has been shipped from the factory in flawless technical safety condition. In order to maintain this condition and to assure safe operation, users must observe all notes and warnings included in these operating instructions. These are identified with the following headings:

ATTENTION!

A note concerning operation, practical advice or other information which must be adhered to in order to prevent damage to the KONSTANTER, and to assure correct operation.

WARNING!

An operating procedure, practical advice or other information which must be adhered in order to assure safe operation of the KONSTANTER, and to prevent personal injury. The most important warnings are summarized below. Reference is made to these warnings at appropriate points within the operating instructions.

WARNING I – Protective Grounding

The KONSTANTER may only be placed into operation after the protective conductor has been connected. Interruption of the protective conductor, either inside or outside of the KONSTANTER, or disconnection of the protective conductor terminal may transform it into a source of danger. Intentional interruption is prohibited.

The device is connected to the mains by means of a 3 conductor cable with mains plug. The plug may only be inserted into a suitable outlet with earthing contact. This safety precaution must not be defeated though the use of an extension cable without protective conductor.

WARNING II – Impaired Safety

If it can be assumed that safe operation is no longer possible, the KONSTANTER must be removed from service and secured against inadvertent use. It must be assumed that safe operation is no longer possible:

☞ If the KONSTANTER demonstrates visible damage ☞ If the KONSTANTER no longer functions ☞ After lengthy periods of storage under conditions which deviate

from specified storage conditions

☞ After extraordinary stressing due to transport

WARNING III – Opening Housing Panels

Voltage conducting parts may be exposed when housing panels are opened, as long as the KONSTANTER is connected to supply power.

Any contact with these exposed conductive parts is life endangering.

For this reason, housing panels may only be opened and/or removed by trained personnel who are familiar with the dangers involved.

WARNING IV – Repair by Trained Personnel

Voltage conducting parts may be exposed when housing panels are opened, as long as the KONSTANTER is connected to supply power.

Maintenance and repair work, as well as internal balancing, may only be performed by trained personnel who are familiar with the dangers involved.

The KONSTANTER must be disconnected from all external voltage sources before work of this type is performed, in as far as this is possible. A five minute waiting period must be observed after disconnection in order to allow internal capacitors to discharge to safe voltage levels.

WARNING V – Fuse Replacement

Only specified fuse types with the specified nominal current rating may be used to replace blown fuses (see “Technical Data” and specifications on the serial plate).

Tampering with fuses or fuse holders is prohibited (“repairing” fuses, short-circuiting fuse holders etc.).

Significance of Symbols

Indicates EC conformity

Observe EGB directives Warning concerning a source of danger

(attention: observe documentation!)

4 GMC-I Messtechnik GmbH

1 Technical Description

1.1 Features and Range of Applications

Depending upon where they are used and prevailing local conditions, electrical and electronic devices may be subject to significant supply power fluctuation in the absence of stabilizing and back-up systems. Automotive electrical system voltage characteristics during starter motor operation offer a typical example. R&D, production and test departments must be able to assure that electrical equipment is capable of executing all required functions under these types of conditions.

Type SSP 120, SSP 240 and SSP 320 KONSTANTER power supplies from GMC-I Messtechnik GmbH support users in fulfilling this objective.

In particular in automated test systems for routine testing, SSP KONSTANTERs are capable of high throughput rates. Short response times assure accurate emulation of rapidly changing voltage and current characteristics. Power consumer characteristics relative to dynamic supply power can thus be tested and simulated very easily.

The integrated calibration procedure and the included calibration

certificate are especially important for use in production and testing departments which are certified in accordance with ISO 9000.

SSP KONSTANTERs (single output system power supplies are programmable, voltage and current regulated DC power supplies with 120, 240 or 320 W of output power.

They are microprocessor controlled, and are furnished with an addressable RS 232C serial interface as standard equipment. Up to 30 KONSTANTERs can thus be controlled from a single PC port.

An IEEE 488 interface can be integrated as an option. Complete control of all device functions, as well as querying of measured values, setting parameters and device statuses is possible via both interfaces.

Manual adjustment of voltage and current is accomplished by means of two rotary pulse encoders with selectable adjusting sensitivity.

Two 4-place multifunction displays are used for precision read-out of measured values (V, A and W), as well as for menu-driven configuration of numerous additional functions such as limiting setting ranges, overvoltage protection, overcurrent shutdown delay and programmable, digital signal inputs and outputs.

Up to 243 settings can be saved to memory and recalled either individually or sequentially, for example in order to generate specific voltage or current characteristics. And innovative circuit technology allows for nearly load independent response times of less than 1 ms. Output parameters can thus be superimposed with AC signal right up into the kHz range via the analog interface which is furnished as standard equipment.

The measuring function includes a Min-Max value memory, limit monitoring signals and a HOLD function.

1.2 Functions

Adjustable functions:

❑ Voltage and current setpoint values ❑ Voltage and current limit values (soft-limits) ❑ Activate / deactivate the output ❑ Overvoltage protection trigger value ❑ Overcurrent response (limiting with or without shutdown) ❑ Delay time for overcurrent shutdown ❑ Start-up performance (power-on status) ❑ Reset device settings ❑ Save / recall device settings ❑ Save / recall setting sequences ❑ Sequence definition ❑ Trigger input function selection ❑ Function selection for digital control inputs ❑ Operating parameters for the measuring function (Min-Max

value memory, limit monitoring, display resolution)

❑ Initialize calibration procedure ❑ Initialize self-test ❑ Operating parameters for computer interfaces (device

address, SRQ masks, transmission speed etc.)

Display functions:

❑ Momentary measured voltage, current and power values ❑ Minimum and maximum measured voltage and current

values

❑ Current device settings (individual or complete) ❑ Current operating status (control mode, overtemperature,

busy)

❑ Occurred events (mains or phase failure, overtemperature,

overvoltage, overload, programming error)

❑ Memory contents ❑ Device ID ❑ Calibration date

Protective Functions and Additional Functions

❑ Sensing terminals protected against polarity reversal and

automatic switching to auto-sensing

❑ Control panel disabling ❑ Output overvoltage protection ❑ Output protected against reverse polarity ❑ Overtemperature protection ❑ Backup battery for device settings memory ❑ Master-slave series operation ❑ Inrush current limiting ❑ Temperature controlled fans (with 240 and 320 W models)

GMC-I Messtechnik GmbH 5

1.3 Options and Accessories

1.4 Functional Principle

Options

(See order information on last page.)

Devices can be equipped with an IEEE 488 plug-in interface module for integration of SSP KONSTANTERs into IEC bus controlled systems.

The interface is in compliance with requirements set forth in the IEEE488.2 standard (IEC 625-2), and is frequently designated as a GPIB (general purpose interface bus) or an HP-IB (Hewlett Packard interface bus).

Programming of all device functions, as well as querying measured and configured parameters, is possible via the interface. Several specific interface functions are also provided.

The interface option is supplied as a separate plug-in module for easy, subsequent installation to the KONSTANTER.

Included accessories:

The following accessories are included with the SSP KONSTANTER:

❑ These operating instructions ❑ 1 mains power cable with earthing contact plug

(approx. 1½ meters)

Additionally available accessories:

(See order information on last page.)

❑ 19" rack adapter, 1 x 32 N

required for installation of one series SSP 32 N or SLP 32 N KONSTANTER to a 19" rack

❑ 19" rack adapter, 2 x 32 N

required for installation of two series SSP 32 N or SLP 32 N KONSTANTERs to a 19" rack

❑ Mains jumper cable, 0.4 meters

The cable is equipped with a 10 A inlet plug and a 10 A inlet socket. It is used for looping mains power through when several KONSTANTERs are mechanically combined into a multi-channel unit. In this way, the complete unit requires only one mains power cable.

❑ RS 232 bus cable, 2 meters

For connecting one KONSTANTER to an RS 232 interface. (extension cable, 9-pin socket / 9-pin plug connector)

Power Supply

Required DC supply power is generated for each respective circuit from mains power which has been fed to the power pack via an interference suppression filter, a wire fuse, the mains switch and inrush current limiting.

The Central Processing Unit (CPU)

Overall control of the SSP KONSTANTER is accomplished by means of the CPU on PCB A. It uses an 80C32 8-bit microcontroller with 64 kilobytes of program memory and 32 kilobytes of battery-backed CMOS RAM. An 11 MHz pulse generator establishes the clock frequency for the processor, and creates a time reference for the serial interface. A watchdog circuit monitors processor activity and disables access battery-backed RAM in the event of supply power failure.

Operation

Generally speaking, all of the functions of the SSP KONSTANTER can be controlled with the adjusting elements at the front panel, via the RS 232 interface or via the optional IEEE 488 plug-in interface module.

Displays and Control Panel

Both 4-place 7-segment displays and the individual LEDs are controlled statically by the processor via the registers. Front panel key operations are processed by means of a group interrupt and subsequent direct querying. The rotary pulse encoders control the increment and decrement counters depending upon the direction of rotation. Each time an adjusting element is activated, an interrupt occurs at the CPU which then causes an appropriate response.

Interface Option

The SSP KONSTANTER with installed interface module allows for control via the IEEE 488 bus in addition to serial operation.

Remote Control

Device messages received by the interface are forwarded to the CPU where they are first saved to RAM. After receiving an end-ofmessage character, data are checked for correct syntax, plausibility and limit values. Valid commands are subsequently executed.

6 GMC-I Messtechnik GmbH

Setup Procedure

Setup data are processed and forwarded to the respective I/O controller of the respective function unit. Each setting value for output voltage, output current or overvoltage protection triggering is converted to a proportional control voltage by a 12 bit DAC, and is fed to the respective controller or comparator as a setpoint or a reference quantity. Actual output voltage is ascertained by a voltage monitor, whose automatic sensor switching inputs are connected either to the output terminals or the sensing terminals. Actual output current is acquired as a voltage drop at a shunt situated in the negative output conductor, and is amplified by the current monitor to a scaled signal.

In order to achieve rapid downward adjustment of output voltage even with minimal output load, the device is equipped with a limited sink function (limited to approximately 15 W continuous power). The sink function is implemented by means of BET technology (bidirectional energy transfer). This technology assures charging and discharging of the output capacitor within an equally short period of time, even at no-load operation. The sink function is activated as soon as, and for as long as output voltage exceeds the current setpoint value (also in the event of energy recovery from a parallel connected voltage source).

The source and sink functions are enabled when the output On / Off status is set to ON, and the source function is disabled when the status is set to Off, in which case the sink function is deactivated after approximately 300 ms (highly resistive output).

Measuring Procedure

Monitor-amplifier output signals, which are proportional to actual output voltage and current, are fed to an analog multiplexer (MUX) which switches one of the two signals to the input of the analogdigital converter (ADC) depending upon the desired measured quantity. The converter, controlled directly by the CPU, functions in accordance with the dual-slope principle and traces measured value acquirement back to a time measurement (meter reading). The actually measured decimal value is calculated based upon this data, and is stored to RAM. Depending upon the circumstances, the measured value display is refreshed, an extreme value comparison is performed for the Min-Max function or the measured value is made available at the computer interfaces’ data output buffer.

Monitoring Functions

– Control Mode Recognition and Overload

An electrically isolated digital signal is derived from the output signals of the voltage and current regulators, which indicates the currently active control mode (constant voltage or constant current mode), as long as overload operation is not active. “Overload” indicates that power limiting has been triggered as a result of selected parameter settings and prevailing load. These operating conditions are evaluated by the CPU (e.g. for OCP function), are indicated with LEDs and are used to generate status and event registers for computer control.

– Overvoltage Monitoring

After bypassing the voltage monitor, device output voltage is additionally compared to an adjustable limit value within a range of 3 V to 120% nominal voltage by a comparator, and the output is deactivated if the limit value is exceeded and an OVP message is generated (“CV” LED blinks, status and events registers).

– Overcurrent Monitoring

Overcurrent monitoring can be activated and deactivated. Response time is defined with the delay parameter. If, with activated OCP function, the device is in the current regulating mode for at least the duration of the selected delay time (“CC” LED is illuminated), the power output is switched off and an OCP message is generated (“CC” LED blinks, status and events registers).

–Temperature Monitoring

Temperature is acquired by means of PTC resistors at representative points (circuit breaker heat sink), and is converted into a proportional electrical signal. As of an initial threshold temperature of approximately 70C, fan voltage is increased in a linear fashion as temperature increases. The device can be operated at any output load up to the maximum specified operating temperature after the fan has been activated. If ventilation is impeded, or at excessive ambient temperatures, temperature at the sensor may reach the upper threshold of approximately 90C. If this is the case, an overtemperature message is entered to the status and event registers. The output is deactivated by the CPU after 5 seconds, and OTP triggering is indicated by the blinking “Pmax” LED. After sufficient cooling has occurred, the status message is cleared and a ready for operation message is entered to the event register. If the POWER-ON function is set to “Recall”, the output is reactivated automatically. If the POWER-ON function is set to “Standby” or “Reset”, the output remains deactivated and can only be reactivated by pressing the OUTPUT key, or by means of a command from the control computer. After actual temperature has fallen to below the lower threshold value, fan speed is reduced automatically.

GMC-I Messtechnik GmbH 7

1.5 Technical Data

U/V

nom

I / A

nom

0.5 I

nom

Short-Term Working Range

Voltage Setting

Current Setting

0.5

nom

Range

380.5

14 88

221.5

Dimensions in millimeter

1.5.1 General Data

Power Supply

Connection Input: 10 A IEC inlet plug

Output: 10 A IEC inlet socket,

Line voltage 230 V ~ +10 -15%, 47 to 63 Hz Power consumption See chapter 1.4.3

Inrush Current Max. 50 A Mains fuse 1 ea. T 4 A / 250 V (6.3 x 32 mm, UL)

internal: 1 ea. T 5 A 250 V (5 x 20 mm)

Output

Connection

Output Front panel, 2 ea. 4 mm safety jacks

Rear , 6-pole plug-in screw terminal block

Sensor Rear panel, included in 6-pole plug-in

screw terminal block

Analog interface Rear, 11-pole plug-in screw terminals

Regulator type Primary switched-mode regulator with

BET technology

Operating modes Adjustable constant voltage / constant

current source with automatic sharp transition

Output isolation Floating output with “safe electrical

separation” from the mains input and computer interfaces Max. allowable potential, output–ground: 120 V, capacitance, output–ground (housing) 60 nF

Output operating range

without switch, without fuse

Analog Interface

Connection 11-pole plug-in screw terminal block Reference potential Output minus pole, floating TRG input

Connector pin assignments:

Pin Designation Function

1SIG1 OUT

2SIG2 OUT

3TRG IN –

4TRG IN +

5 +15 V

6AGND

– Analog, inverting voltage control input

set

+ Analog voltage control input

set

+ Analog current control input

set

10 U-MON Output voltage measuring output

11 I-MON Output current measuring output

Digital, programmable, open-collector outputs (max. 30 V / 20 mA)

Digital, programmable control input (low: < 1.0 V, high: 4 ... 26 V), potential-free

Auxiliary voltage, +15 V / max. 50 mA reference point, connected to -output

(0 ... –5 V correspond to 0 ... U

(0 ... +5 V correspond to 0 ... U

(0 ... +5 V correspond to 0 ... I

(0 ... 10 V correspond to 0 ... U

(0 ... 10 V correspond to 0 ... I

, Ri = 10 k)

nom

, Ri = 10 k)

nom

, Ri = 10 k)

nom

, Ri = 9.8 k)

nom

, Ri = 9.4 k)

nom

Addressable V.24 – RS 232C Interface

Input 9-pin subminiature socket connector Output 9-pin subminiature plug connector Operating mode half-duplex, asynchronous, XON / XOFF Transmission speed adjustable from 50 to 19,200 bits per second Device address selectable from 0 to 30 or UNL (unlist) Max. Setting Rate approx. 15 settings per second Max. Sampling Rateapprox. 7 measurements per second

IEC 625 – IEEE 488 Interface (optional)

Connection 24-pin socket connector

per IEC 625.1, IEEE488.1

Interface SH1 SOURCE HANDSHAKE functions handshake source function

AH1 ACCEPTOR HANDSHAKE

handshake sink function

T6 TALKER

talker function with serial polling and automatic unlisting, no secondary address and no

Short-term range: If lengthy operation in the short-term

range occurs, overtemperature protection may be triggered resulting in output shutdown (see also short-term power in chapter 1.5.3).

talk-only operation

L4 LISTENER

listener function with automatic unlisting, no secondary address and no listen-only operation

SR1 SERVICE REQUEST

service request function

RL1 REMOTE / LOCAL

remote to local switching function with disabling

DC1 DEVICE CLEAR

reset function including selected device clear

PP1 PARALLEL POLL

parallel polling function with remote configuring

DT1 DEVICE TRIGGER

trigger function C0 No controller function E1/2 Open collector driver

Codes / formats Per IEEE 488.2 Device address Selectable from 0 to 30 or UNL (unlist)

Figure 1.5 Dimensional Drawing (benchtop device)

Max. setting rate Approx. 40 settings per second Max. sampling rate Approx. 15 measurements per second

8 GMC-I Messtechnik GmbH

Electrical Safety

Safety class I Overvoltage

category II for mains input

I for output and interfaces Fouling factor 2 Earth leakage

current 2.5 mA, typ.

IEC 61010-1:1990 + A1:1992 / DIN EN 61010-1: 1993 / VDE 0411-1:1994

DIN VDE 0160:1988 + A1:1989 class W1

EN 60950:1992 / VDE 0805:1990

Protection IP 20 for housing per

IEC 529:1989,

EN 60529:1991,

VDE 0470-1:1992 Electrical isolation Test voltage Mains/output–PE 1.35 kV~ Mains–output 2.7 kV~ (type test: 3.7 kV ~)

Electromagnetic Compatibility (EMC)

Product standard EN 61326-1:1997 + A1: 1998 Interference

emission EN 55022:1998 class A Interference

immunity EN 61000-4-2:1995, feature A

EN 61000-4-3:1996 + A1:1998,

feature B EN 61000-4-4:1995, feature B EN 61000-4-5:1995, feature B EN 61000-4-6:1996, feature B EN 61000-4-11:1994, feature B

Ambient Conditions

IEC 68-2-6 (’90) Vibration resistance

10 ... 55 Hz, 0.3 mm, 1 octave / min., 3 x 30 min.

IEC 68-2-27 (’89) Impact resistance

(15 g, 11 ms, semi-sinusoidal, 3 x 6 shocks)

Temperature Operation: 0 to 50° C, range current derating at > 40° C

(see also chapter 1.5.3)

Storage: -25 to +75° C

Relative humidity Operation:



75%, no condensation allowed

Cooling With integrated fan

Inlet vent: side panel Outlet vent: rear panel

1.5.2 Mechanical Data

Type Benchtop device, suitable for rack

Dimensions See also dimensional drawing in

(W x H x D) Benchtop device:

Weight Approx. 2.8 kg

mounting

Figure 1.5

221.5 x 102 x 397.5 mm For 19" rack: ½19" x 2 standard height units x 400 mm

IEEE 488 interface (optional): approx. 0.1 kg

GMC-I Messtechnik GmbH 9

1.5.3 Electrical Data

Electrical Data for 120 W Models

 Unless otherwise specified, all entries are maximum values and apply within an operating

temperature range of 0 to 50C, within the nominal power range and the nominal line voltage range of 230 V

 Percentages make reference to the respective setting value or measured value.

Description (abbreviated name) SSP 120-20 SSP 120-40 SSP 120-80

Typ e 32 N 20 RU 10 P 32 N 40 RU 6 P 32 N 80 RU 3 P

Nominal Output Data Voltage setting range 0 ... 20 V 0 ... 40 V 0 ... 80 V

Output Characteristics

Setting resolution [display (< 10.00 /  10.00), remote]

Overall setting accuracy at 23 ± 5° C including system deviation (load / mains)

Static system deviation with 100% load fluctuation

Static system deviation with 10% line voltage fluctuation

Residual ripple Ua > 5% U

Common mode noise (10 Hz ... 1 MHz) 0.5 mA

Settling time (voltage) with load step of 10 ... 90% I

Under and overshooting with load step of 50 A / ms (Typical values) I = 80% 400 mV 400 mV 800 mV

Response time (voltage) with setpoint jump from 0  100% with setpoint jump from 100%  0

Response time (current) with setpoint jump from 0  100% with setpoint jump from 100%  0

Measured Value Displays (4-place)

Measuring resolution [display (< 10.00 /  10.00), query]

Measuring accuracy at 23 ± 5° C for values > 0.1% of the nominal value

Protective Functions

Output overvoltage protection, trigger value Setting Range

Reverse polarity protection load capacity Continuous 10 A 6 A 3 A

Reverse voltage withstand capacity Continuous 40 V 80 V 100 V

General

Power supply

Power consumption At nominal load

Efficiency At nominal load > 70% > 80% > 80%

Switching frequency Typical 200 kHz 200 kHz 200 kHz

Article Number K320A K321A K322A

Specified values are increased by a factor of approximately 1.2 within the functional range for line voltage, namely -10% to -15%.

nom

10% after a warm-up period of 30 minutes.

Short-term power where t < 90 s / Tu  25° C max. 200 W max. 240 W max. 240 W

1) 1

nom

Current setting range 0 ... 10 A 0 ... 6 A 0 ... 3 A

Continuous power at Tu 40° C

max. 120 W max. 120 W max. 120 W

Current derating where Tu > 40° C -0.25 A / K -0.15 A / K -0.07 A / K

Voltage Current

Voltage (10 Hz ... 10 MHz)

Current (10 Hz ... 1 MHz)

To le ra n ce

(Typical values) I = 80%

To le ra n ce No-load / nominal load No-load / nominal load

To le ra n ce

short-circuit / nominal load short-circuit / nominal load

Voltage Current

Power

Voltage Current

Power

Setting resolution

Setting accuracy

Line voltage 230 V~ +10 / 15%

In standby mode

With maximum short-term power

5 mV / 10 mV, 5 mV

2.5 mA

0.15% +30 mV

0.4% +35 mA

15 mV 20 mA

5 mV 8 mA

10 mV

eff

25 mA

eff

40 mV

200 s

40 mV 1 ms / 1 ms 1 ms / 1 ms

100 mA < 5 ms / < 5 ms < 5 ms / < 5 ms

2 mV / 10 mV, 2 mV

1 mA, 1 mA

0.1 W, 0.1 W

0.15% + 30 mV

0.4% + 25 mA

0.55% + 0.5 W

0 ... 25 V

0.1 V

2% + 0.2 V

47 ... 63 Hz

280 VA, 180 W

45 VA, 15 W

450 VA

10 mV

2 mA

0.15% +40 mV

0.5% +20 mA

10 mV 10 mA

5 mV 5 mA

10 mV

eff

20 mA

eff

0.5 mA

eff

80 mV

200 s

80 mV 1 ms / 1 ms 1 ms / 1 ms

60 mA

< 5 ms / < 5 ms < 5 ms / < 5 ms

10 mV, 4 mV

0.6 mA, 1 mA

0.1 W, 0.1 W

0.15% + 40 mV

0.5% + 15 mA

0.65% + 0.6 W

0 ... 50 V

0.2 V

2% + 0.4 V

230 V~ +10 / 15%

47 ... 63 Hz

280 VA, 170 W

45 VA, 15 W

500 VA

20 mV

1 mA

0.15% +80 mV

0.5% +10 mA

10 mV 10 mA

5 mV 5 mA

10 mV

eff

10 mA

eff

0.5 mA

eff

160 mV

200 s

160 mV 4 ms / 4 ms 4 ms / 4 ms

30 mA < 10 ms / < 10 ms < 10 ms / < 10 ms

10 mV, 8 mV

0.5 mA, 1 mA

0.1 W, 0.1 W

0.15% + 80 mV

0.5% + 10 mA

0.65% + 0.8 W

0 ... 100 V

0.4 V

2% + 0.8 V

230 V~ +10 / 15%

47 ... 63 Hz

280 VA, 170 W

45 VA, 15 W

500 VA

10 GMC-I Messtechnik GmbH

Electrical Data for 240 and 320 W Models

 Unless otherwise specified, all entries are maximum values and apply within an operating

temperature range of 0 to 50C, within the nominal power range and the nominal line voltage range of 230 V

10 % after a warm-up period of 30 minutes.

 Percentages make reference to the respective setting value or measured value.

SSP 240-20 SSP 240-40 SSP 240-80 SSP 320-32

32 N 20 RU 20 P 32 N 40 RU 12 P 32 N 80 RU 6 P 32 N 32 RU 18 P

0 ... 20 V 0 ... 40 V 0 ... 80 V 0 ... 32 V

0 ... 20 A 0 ... 12 A 0 ... 6 A 0 ... 18A

max. 240 W max. 240 W max. 240 W max. 320 W

max. 320 W max. 360 W max. 360 W max. 430 W

-0.5 A / K -0.3 A / K -0.15 A / K -0.5 A / K

5 mV / 10 mV, 5 mV

5 mA / 10 mA, 5 mA

0.15% +40 mV

0.5% +70 mA

25 mV 30 mA

5 mV 8 mA

15 mV

eff

50 mA

eff

0.5 mA

eff

40 mV

600 s

10 mV

3.33 mA / 10 mA, 3.33 mA

0.15% +45 mV

0.5% +45 mA

18 mV 30 mA

5 mV 8 mA

15 mV

eff

25 mA

eff

0.5 mA

eff

80 mV

300 s

20 mV

2 mA

0.15% + 80 mV

0.5% +25 mA

18 mV 15 mA

5 mV 5 mA

15 mV

eff

20 mA

eff

0.5 mA

eff

160 mV

200 s

50 mA

450 mV 450 mV 800 mV 450 mV

40 mV 1 ms / 1 ms 1 ms / 1 ms

200 mA < 5 ms / < 5 ms < 5 ms / < 5 ms

2 mV / 10 mV, 2 mV 2 mA, 10 mA, 2 mA

0.15% +40 mV

0.5% +70 mA

0.65% +1.4 W

80 mV 1 ms / 1 ms 1 ms / 1 ms

120 mA < 5 ms / < 5 ms < 5 ms / < 5 ms

10 mV, 4 mV

2 mA / 10 mA, 1.2 mA

0.15% +40 mV

0.5% +25 mA

0.65% +1 W

160 mV 4 ms / 4 ms 4 ms / 4 ms

60 mA < 10 ms / < 10 ms < 10 ms / < 10 ms

10 mV, 8 mV

0.6 mA, 1 mA

0.15% + 80 mV

0.5% +15 mA

0.65% +1.2 W

10 mV

5 mA / 10 mA, 5 mA

0.15% +50 mV

0.5% +70 mA

30 mV 40 mA

10 mV 20 mA

30 mV

eff

(Ua > 10%U

eff

0.5 mA

eff

64 mV

500 s

64 mV 1 ms / 1 ms 1 ms / 1 ms

180 mA < 5 ms / < 5 ms < 5 ms / < 5 ms

10 mV, 4 mV

2 mA, 10 mA, 2 mA

0.1 W, 0.1 W

0.15% +40 mV

0.5% +70 mA

0.65% +1.4 W

nom

)

0 ... 25 V

0.1 V

2% +0.2 V

0 ... 50 V

0.2 V

2% +0.4 V

0 ... 100 V

0.4 V

2% + 0.8 V

20 A 12 A 6 A 18 A

40 V 80 V 100 V 64 V

230 V~ +10 / 15%

47 ... 63 Hz

510 VA, 350 W

45 VA, 15 W

620 VA

230 V~ +10 / 15%

47 ... 63 Hz

500 VA, 340 W

45 VA, 15 W

690 VA

230 V~ +10 / 15%

47 ... 63 Hz

500 VA, 340 W

45 VA, 15 W

690 VA

> 68% > 70% > 70% > 69%

200 kHz 200 kHz 200 kHz 200 kHz

K330A K331A K332A K334A

Specified values are increased by a factor of approximately 1.2 within the functional range for line voltage, namely -10% to -15%.

0 ... 40 V

0.2 V

2% +0.4 V

230 V~ +10 / 15%

47 ... 63 Hz

650 VA, 460 W

50 VA, 15 W

770 VA

GMC-I Messtechnik GmbH 11

2 Initial Start-Up

Warning!

Attention!

ANALOG INTERFACE OUTPUT

OUTIN RS 232

230V 5

FUSE T4

➁

➂

➁

Interface Module

Ribbon Cable

➁

➀

➁

19“ Dummy Plate

19“ Abutment

➃

19'' Connector Plate

19'' Abutment

➃

2.1 Preparing for Operation

2.1.1 Installing the IEEE 488 Interface Module

2.1.2 Installation to 19'' Device Racks

The SSP KONSTANTER housing allows for use as a benchtop instrument, as well as for installation to a 19'' rack. One KONSTANTER and a cover plate, or two devices next to each other can be installed to the rack. The benchtop instrument can be quickly retrofitted for rack mounting.

The KONSTANTER must be disconnected from the mains before installing the interface module. Switch the KONSTANTER off, and then pull the mains plug from the outlet. Wait at least 5 minutes before opening the KONSTANTER, in order to assure that the capacitors have been discharged to a safe voltage level. Capacitors may otherwise be charged with life endangering voltage, and coming into contact with them may result in severe injury.

The interface module may be damaged by electrostatic

discharge. Observe guidelines for handling electrostatic sensitive devices. Do not touch electrical contacts or PCB

components.

➀ Disconnect the KONSTANTER from the mains, and pull the

mains plug from the outlet. Wait for at least 5 minutes in order to assure that the capacitors have been adequately discharged.

➁ Loosen the 4 screws in the housing cover and lift the cover

off.

➂ Unscrew the cover plate at the left-hand side of the rear

housing panel. Save the screws for use in the next step..

Retrofit for Rack Mounting a Single Device

Use the accessory adapter: 19'' adapter 1 x 32 N. This accessory components includes a 19'' abutment and a 19'' blanking plate.

➀ Loosen the 4 screws at the KONSTANTER front panel. ➁ Pull out the filler strips from the left and right sides.

Figure 2.1.2 aRack Installation of a Single KONSTANTER

➂ Replace the filler strips with the 19'' abutment on one side,

and with the 19'' blanking plate on the other side, and secure them with the four screws.

➃ Unscrew the feet from the bottom of the housing. Remove

the rubber inserts from the feet to this end. The screws are then exposed.

➄ Now install the KONSTANTER to the rack. Save all loose

parts for possible future use.

Figure 2.1.1 a Opening the KONSTANTER Housing

the rack. The guide rails, as well as the front panel mounting screws used to secure the KONSTANTER, are rack-specific and

The KONSTANTER must be attached to guide rails at one side of

➃ The interface module:

must be procured from your rack supplier. With the ribbon cable facing forward, push the interface module through the housing rear panel and into the device interior.

Securely screw the sheet metal cover on the interface module to the housing rear panel from the outside. Use the two screws referred to in step➂.

➄ Insert the plug connector from the interface module into the

connector strip on the primary printed circuit board. Do not twist the ribbon cable.

Retrofit for Rack Mounting Two KONSTANTERs

Use the accessory adapter: 19'' adapter 2 x 32 N.

This accessory component includes two 19'' abutments and one

19'' connector plate.

➀ Loosen the 8 screws at the KONSTANTER front panels. ➁ Pull out the filler strips from the left and right sides of each

device.

Figure 2.1.2 b Rack Installation for Two KONSTANTERs

➂ Replace the filler strips with the 19'' abutments at the far left

and far right, and with the 19'' connector plate in the middle, and secure them with the eight screws.

Figure 2.1.1 b Installing the Interface Module

➅ Return the housing cover and secure it with the four screws.

The KONSTANTER can now be connected as usual.

12 GMC-I Messtechnik GmbH

Screw both housings to the through-holes and threads in the plug protector at the rear.

➃ Unscrew the feet from the bottom of the housing. Remove

Attention!

Warning!

the rubber inserts from the feet to this end. The screws are then exposed.

➄ If you would like to electrically connect the two

KONSTANTERs, use the “mains jumper cable” and “RS 232 bus cable” accessories.

➅ Install the two devices to the rack. Save all loose parts for

possible future use.

The KONSTANTERs must be attached to guide rails at both sides of the rack. The guide rails, as well as the front panel mounting screws used to secure the KONSTANTERs, are rack-specific and must be procured from your rack supplier.

2.1.3 Combining Benchtop Devices

Up to 3 benchtop KONSTANTERs can be stacked in combination (see also chapter 5 for electrical connection options via the analog interface).

➀ Unscrew the feet from the bottom of the housing. Remove

the rubber inserts from the feet to this end. The collar screws are then exposed. Four oblong slots now become visible at the bottom of the housing.

➁ Turn the 4 collar screws from the feet into the 4 threaded

holes on the top of the other device housing. Save the 4 retaining washers and feet for possible future use.

➂ Set the KONSTANTER without feet onto the top of the other

KONSTANTER. The screws from the bottom KONSTANTER must protrude through the oblong slots in the base of the other KONSTANTER. Carefully push the top KONSTANTER back until the screws snap into place.

➃ Screw the two KONSTANTERs together via the through-

holes and threads in the plug protector at the back. The top KONSTANTER is thus secured against shifting.

➄ If you would like to electrically connect the two

KONSTANTERs, use the “mains jumper cable” and “RS 232 bus cable” accessories.

2.1.4 Connection to the Mains

Observe WARNING I!

Before switching the KONSTANTER on, is must be assured that available mains power complies with the supply power values specified at the mains connection on the back of the device.

The KONSTANTER requires 230 V ~ supply power. Connect the mains inlet plug at the rear panel to a mains outlet with earthing contact using the included power cable. Rated power consumption is specified on the serial plate at the bottom of the KONSTANTER.

A mains outlet is included above the mains inlet plug for looping mains power through to an additional KONSTANTER.

This mains outlet can neither be switched on and off, nor is it protected with a fuse.

If mains power is looped through, make sure that overall current consumption does not exceed 10 A at the incoming supply lines! Suitable “mains jumper cables” are available as accessories (see order information on last page).

2.1.5 Connecting Power Consumers

The output leads are connected either at the front panel with 4 mm safety plugs to the “” and “” safety jacks, or at the rear panel to the “” and “” outputs at the 6-pole screw terminal. If loads are connected to both the front and the rear panel (not allowed in the event of parallel connection due to danger of overload!), constant voltage regulation applies to the terminals at the rear panel. There are two terminals each for “” and “” for load connection at the rear panel.

In the case of load current of greater than 10 A, these terminals must be parallel connected due to the specified contact rating. Make sure that the utilized cables have an adequate cross-section, and that polarity is not reversed. It is advisable to twist the output leads and to identify polarity at both ends.

The yellow-green safety jack at the front panel is connected to PE, and can be used to connect ground cables or cable shield, or can be used as an earth connection point for one of the output poles.

2.1.6 Connection to Computer Interfaces

If the KONSTANTER is used within computer controlled systems, one of the two connections described below must be established via the appropriate interface.

Comments

 The KONSTANTER cannot be remote controlled via both

interfaces simultaneously. The interface which first initiates action after mains power has been switched on is activated, and the other remains inactive.

 In order to assure that existing bus activity is not interfered

with, all affected KONSTANTERs should be switched off while establishing the bus connection.

 Both interfaces are equipped with a common ground (GND),

and are electrically isolated from the output in accordance with specified electrical safety regulations.

 Interface configuration is described in chapter 4.7.4.

RS 232C Interface

Most controllers include two serial ports, which are commonly designated COM1 and COM2, and which are equipped with 25 or 9-pin subminiature plug connectors. A suitable cable with a length of approximately 2 meters is available as an accessory for connecting the KONSTANTER and the controller. Cables with other lengths are commercially available. Appropriate adapters are available as well, in the event that your controller is equipped with a 25-pin plug connector. If you would like to fabricate the connector cable yourself, you’ll need a 3-conductor shielded cable in order to establish connection as shown in Figure 2.1.6 a.

GMC-I Messtechnik GmbH 13

Figure 2.1.6 a Pin Assignments for 9-Pin Plug and

TxD_IN 2

RxD_IN

GND_IN

2 RxD

3 TxD

5 GND

SSP

9-pin Plug9-pin Socket Connector

RxD_OUT 2

TxD_OUT

GND_OUT

2 TxD_IN

3 RxD_IN

5 GND_IN

9-pin Plug 9-pin Socket Connector

SSP

OUT

RS 232

PC/Controller

SSP

RS 232

COM1/COM2

IN OUT

Accessory: RS 232 Bus Cable, 0.4 meters

Accessory: RS 232 Bus Cable, 2 meters (for example)

Socket Connectors

The serial interface furnished with this KONSTANTER series is addressable. Up to 30 KONSTANTERs can be addressed via this interface.

Data Queries

If a device (slave) is requested to return data to the controller, it

may not be addressed in the interim. In other words, the controller

must wait until all requested data have been fully received. No

data may be transmitted to any other devices during this period of

time.

In the case of multiple device serial operation, good timing must be

assured. Data collision is thus avoided, which may result in

interruption of data transfer and deletion of output buffer

contents.

If the slave does not respond within a specified period of time

(TIMEOUT), the controller can try to synchronize the device with a

universal command, or execute a reset and request the required

data once again.

IEEE 488 Interface

 Up to 15 IEC bus controlled devices (including the controller)

can be interconnected to create a system.

 These devices are connected to the bus with suitable,

commercially available cables with 24-pin plug connectors. If your IEC bus system is equipped with the previously

common 25-pin subminiature plug connectors, you’ll need a suitable adapter cable.

In order to assure reliable data transfer, the cable length between any two devices should not exceed 2 meters, and overall length should not exceed 15 meters.

Double shielded connector cable is recommended if the KONSTANTERs are operated in proximity to strong sources of interference or their power cables.

2.2 Switching the Instrument On

After the described preparations have been completed, the

device can be switched on.

 Press the mains switch [1] at the front panel until it snaps into

place in order to turn the device on.

Power-Up Test

The microprocessor included in the device then starts a power-up

Figure 2.1.6 b Interconnection via the Serial Interface

If RS 232 communication is to be expanded to several KONSTANTERs, additional arrangements must be made regarding data protocols.

Addressing

A separate address is assigned to each interconnected KONSTANTER. If the KONSTANTER receives its own address, it is switched to the “addressed” status after which it accepts all subsequent commands and data, until it is unlisted upon receipt of a different device address. In compliance with IEEE 488, an address range of 0 to 31 is used, although address 31 is reserved as a general unlist command (UNL). The serial interface’s device address is thus identical to the address of the optional IEEE 488 interface (if included).

Universal Commands

In addition to the command

Addr xxDevice address, other general commands can be used which are accepted without previous addressing.

*TRG Trigger command, synchronization

DCL Device clear

IFC Interface clear Explanations of these commands and their syntax are included in

chapter 6.

14 GMC-I Messtechnik GmbH

test. The following operations are performed during the test routine (duration approximately 8 seconds):

– Reset all functional units (except battery-backed setup

memory) – ROM test –RAM test – Initialize computer interfaces if installed – Ascertain device type – Check the A-D converter timer – Recall last settings if required

The “LOCKED/SEQ” LED [12] blinks while this routine is running, and all other LEDs and all digital display segments light up (display test). If the device has been equipped with the optional “IEEE 488 computer interface”, the selected IEC bus device address then appears briefly at the display (e.g. “Addr 12”). After successful completion of the self-test, the READY lamp is continuously illuminated and the display is switched to measured value indication for voltage (Uout) and current (Iout).

If this status is not achieved despite correctly selected device address (0 to 30), even after repeatedly switching the device on and off with abbreviated self-test, the device is probably defective. If this is the case, contact your local representative.

Abbreviated Power-Up Test

In order to shorten power-up time, or if problems occur with the normal power-up test, an abbreviated power-up test can be used:  With the device switched off, press and hold the <ENTER>

key.

 Turn the mains switch on.  Release the <ENTER> key after approximately 1 second.

If this procedure is used, only essential initialization steps are run during power-up.

After initial power-up, the device has the following basic configuration:

 Interface functions Standard “pon” status  Device functions

– Output status Inactive – Voltage setpoint 0 V – Current setpoint 0 A – Voltage setting limit Nominal output voltage – Current setting limit Nominal output current – OVP trigger value 25 V (for 20 V models)

50 V (for 40 V models)

100 V (for 80 V models) – Current limiting mode Limiting without shutdown – Shutdown delay 0 ms – TRIGGER input Inactive – Min-Max measured value memory Off – Power ON mode Reset configuration – Manual operation Enabled – Memory contents Deleted

The desired settings can be selected starting with this basic configuration.

After a warm-up period of approximately 30 minutes, the instrument operates at maximum accuracy.

When the device is powered up again at a later point in time, active device configuration depends upon the last setting selected for the POWER_ON function (—> page 69):

– Default settings or – Last used device settings or – Last used device settings with inactive output

Power-Up with RESET

In order to assure that the connected power consumer is not endangered by any previous device settings, the device can be initialized with the “POWER_ON RST” function by pressing and holding the <CE/LOCAL> key during the power-up routine.

In order to switch the device off, activate the mains switch one again. The device is then disconnected from mains power and the output is deactivated. The last device configuration, as well as any settings which have been saved to battery-back configuration memory, are retained.

Caution!

Avoid switching the device on and off in a rapid, repeated fashion. This temporarily impairs the effectiveness of the inrush current limiting function, and may result in a blown fuse.

GMC-I Messtechnik GmbH 15

3 Controls, Display Elements and Terminals

12356 89 12

171615141311 1074 18

Note: Numbers in brackets make reference to the figures included below.

[1] Mains Switch <POWER>

For turning the KONSTANTER on and off After switching the KONSTANTER on, a self-test is performed with a duration of approximately 8 seconds. After successful completion of the self-test, the KONSTANTER briefly displays its interface address and the version number of the installed firmware, one after the other. The POWER-ON function then configures the device with predetermined settings and the device is ready for use.

When the KONSTANTER is switched off, it is disconnected from mains power and the output is immediately deactivated. The last device configuration, as well as any settings which have been saved to battery-backed setup memory, are retained.

[2] Output On-Off Key <OUTPUT>

The power output can be activated and deactivated by pressing the <OUTPUT> key. The red LED above the <OUTPUT> key is illuminated as long as the output is active. No significant output voltage overshooting occurs when the output is activated and deactivated.

Activation sequence:

If the power output is activated, current and voltage are initially set to “0” for transition from the “highly resistive” state. Setpoints do not become active until after this transition has been completed.

Deactivation sequence:

Current is set to 0 A and voltage to 0 V for approximately 350 ms. A sink is thus activated which discharges the output capacitors to the greatest possible extent. The sink is then deactivated and the output becomes highly resistive. However, the output terminals are not electrically isolated.

[3] Control Mode, Protective Function and Status Displays

No LEDs light up: Output has not been activated

LEDs lights up:

Indicates the output’s operating status (control mode) if it has been activated:

Green CV LED Constant voltage regulation (Uout = Uset)

Green CC LED Constant current regulation (Iout = Iset)

Blinking LED:

Indicates the reason for automatic deactivation of the output

Green CV LED OVP (overvoltage protection)

Overvoltage protection has been triggered,

because output voltage has exceeded the selected trigger value OVP / OVSET.

Possible causes:

☞ Voltage setpoint USET has been set too high manually,

memory recall, programming error or Uset control signal to the analog interface

☞ Voltage transients caused, for example, by switching

inductive power consumers (perhaps too little difference between selected USET and OVSET values)

☞ Unipolar power recovery from the connected consumer

(e.g. DC motor)

16 GMC-I Messtechnik GmbH

☞ During auto-sensing: Sensing lead polarity is reversed, or an

output lead is/was interrupted or was not taken into consideration when adjusting OVSET, so that the voltage at the output terminals which is relevant for the OVP function is increased by the amount to be compensated for at both leads,

and is higher than USET voltage as controlled by the sensors at the load side (too little difference between selected USET and OVSET values).

☞ Parallel connected voltage sources

Green CC LED OCP (overcurrent protection)

Overcurrent protection is active. If the OCP ON function has been activated, the output was operated for a duration of t > DELAY in the current limiting mode (current regulation). The output has been deactivated.

Possible causes:

☞ Current setpoint ISET has been set too low manually, memory

recall, programming error or Iset control signal to the analog interface

☞ Current transients caused by switching inductive

consumers (DELAY time may be set too low)

Yellow Pmax LED OTP (overtemperature protection)

Electronic power limiting has been

(overload! Pout > Pnom).

Possible causes:

triggered

☞ Impaired cooling, e.g. air inlet or exhaust vents are

obstructed.

☞ Excessive ambient temperature

The KONSTANTER is capable of continuously supplying nominal power at ambient temperatures of up to 50 °C (measured at the air inlet vents). Approximately 120 to 130% nominal power can be drawn intermittently (triggering point for electronic power limiting). Continuous operation at these levels may cause triggering of the overtemperature protection function.

☞ The fan has failed.

☞ A device error or defect has occurred.

After the cause of triggering has been eliminated, the output can be reactivated.

[4] Output

Selected constant voltage or constant current is available from the safety jacks at the front panel.

 blue Negative output pole  red Positive output pole

yellow-green Earth connection point for the output or

shield terminal if shielded output leads are used. The ground terminal is connected to the housing and the earthing contact at the mains connection.

The power consumer can also be connected to the OUTPUT interface [22] at the rear panel.

[5] Left-Hand Display with [7]

[6] Display Parameter Indicators (LEDs)

As a default setting, the measured output voltage value Uout appears in volts at the left-hand display. The display can be switched to the momentary measured voltage value Uset by slightly turning the voltage adjusting knob [5], or by pressing the <ENTER> key. The LEDs allocated to the display indicate which value is being displayed (green LED = measured value, yellow LED = setting value).

 Uout / V (gr) = Measured output voltage value in V  Uset / V (ye) = Output voltage setpoint in V (blinking

indicates that the displayed value has not yet been set)

If no adjustment is made for a period of 10 seconds during the display of a setting value, the display returns to Uout automatically. Additional KONSTANTER functions can be selected with the <SELECT>, <FUNCTION>, <RCL> and <SAVE> keys. The function code or the parameter name appears at the left-hand display in this case.

[7] Rotary Knob for Voltage Adjustment <Uset>

Voltage is adjusted in the usual fashion with the rotary knob. However, the adjusting element is not a potentiometer, but rather a rotary pulse encoder which generates 24 pulses per revolution, whose setting resolution (step size per pulse) can be set to either coarse, medium or fine with the <SELECT> function. This allows for convenient, precise adjustment on the one hand, and also assures that no change occurs to the selected value when switching between remote control and manual operation.

When the voltage adjusting knob is turned, the left display is first switched to the Uset display and the current voltage setpoint appears. After approximately 0.4 seconds, one of the decimal places starts blinking at the display in order to indicate selected adjusting sensitivity. From this point on, turning the rotary knob changes the display value, and thus the setpoint value, at the selected decimal place. Clockwise rotation increases the value, and counterclockwise rotation decreases the value. If no adjustment is made for a period of 10 seconds, the display automatically returns to the measured voltage value Uout. The display can be immediately switched to the Uout value by pressing the <CE/LOCAL> key.

☞ Detailed explanations are included in chapter 4.6.

[8] Right-Hand Display with [10]

[9] Display Parameter Indicators (LEDs)

As a default setting, the measured output current value Iout appears in amperes at the right-hand display. The display can be switched to the momentary current setpoint Iset by slightly turning the current adjusting knob [8], or by pressing the <ENTER> key twice. The LEDs allocated to the display indicate which values are being displayed (green LED = measured value, yellow LED = setting value).

 Iout/A (gr) = Measured current value in A  Iset / A (ye) = Current setpoint in A (blinking indicates that

the displayed value has not yet been set)

If no adjustment is made for a period of 10 seconds during the display of a setting value, the display returns to Iout automatically.

GMC-I Messtechnik GmbH 17

Additional KONSTANTER functions can be selected with the

Attention!

<SELECT>, <FUNCTION>, <RCL> and <SAVE> keys. The respective measured value or setting parameter appears at the right-hand display in this case.

[10] Rotary Knob for Adjusting Current <Iset/A>

The same applies to this rotary knob, with reference to output current, as is also the case with the voltage adjusting knob [5].

[11] Parameter Adjusting Keys  and 

The <> (increment) and <> (decrement) keys are used to select or adjust all KONSTANTER functions and their parameters.

☞ Detailed explanations are included in chapters 4.6, 4.7

and 4.14.

[12] Interface Displays: REMOTE, ADDR, SRQ, LOCKED

The respectively illuminated LED indicates the current operating state of the computer interface:

REMOTE on: The KONSTANTER is being remote

controlled, front panel controls are disabled.

ADDR/DATA on: The KONSTANTER has been addressed

and is receiving or transmitting data (applies to IEC bus operation only).

SRQ/STS on: The KONSTANTER is transmitting a service

request.

LOCKED/SEQ on: Indicates that manual controls are disabled:

Front panel controls are disabled and protected against unauthorized or inadvertent change. This display only applies to disabling of the front panel controls by means of manual operation or a control signal applied to the TRIGGER input (for T_MODE LLO). It does not indicate disabling of manual switching to local control by means of the IEC bus LOCAL LOCKOUT command.

blinking: Sequence mode display in

disabled and enabled state:

– Slow blinking: sequence in hold status – Fast blinking: sequence in run status

Sequence mode display

LLO is displayed when any key or rotary knob is activated (

and disabling:

ocal lockout).

[13] Function Selection Key <SELECT>

 Selection of displayable measured values  Resolution of display values and setting values

☞ Detailed explanations are included in chapters 4.6, 4.7

and 4.8.

[14] Recall Key <RCL>

Recall of stored KONSTANTER settings, value pairs (Uset and Iset) and any associated dwell time setting for possible readjustment.

☞ Detailed explanations are included in chapter 4.10.

[15] <ENTER> Key

The <ENTER> key is used for several functions:

 Execute selected functions  Acknowledge selected text parameters  Go to the next lowest function menu level  Switch the display from Uout / Iout to Uset / Iset with active

cursor

Setpoint changes are acknowledged with the <ENTER> key

in this mode.

 Move cursor back and forth between Uset and Iset in the

Uset / Iset display

 Activate the recalled memory location

☞ Detailed explanations are included in chapters 4.6, 4.7

and 4.12.

[16] <CE/LOCAL> Key

This key has several functions:

 Abort an operation  Switching from remote to local control  Disable front panel controls  In combination with special functions

☞ Detailed explanations are included in chapter 4.13.

[17] Save Key <SAVE>

 Saves device settings, value pairs (Uset and Iset) and any

associated dwell time. In the manual mode, this key also fulfills the function of the STORE computer command.

 Disabling of front panel controls in order to prevent

inadvertent or unauthorized changes to settings is only possible in combination with the <CE/LOCAL> key.

☞ Detailed explanations are included in chapter 4.9.

[18] Function Selection Key <FUNCTION>

No special key is assigned to device functions which are normally seldom adjusted or used. These functions are controlled in a menu-driven fashion.

☞ A description of the menu and the procedure for setting all

functions and parameters is included in chapter 4.7.

[19] RS 232 Interface

☞ Detailed explanations regarding remote control of

KONSTANTER functions via the RS 232 serial interface are included in chapter 2.1.3.

☞ Interface-specific commands are included in chapter 6.4.

[20] IEEE 488 Bus Connection

Connection for remote control of KONSTANTER functions:

☞ Detailed explanations are included in chapter 2.1.1.

☞ Interface-specific commands are included in chapter 6.4.

The electrical contacts of all interfaces are connected to components which may be damaged by electrostatic discharge. Neutralize potential differences between yourself and the device by grasping the housing before touching these contacts!

18 GMC-I Messtechnik GmbH

[21] Analog Interface

Attention!

Warning!

GOSSEN METRAWATT

IEC 625/IEEE 488 INTERFACE F. SSP-KONSTANTER BEST.NR. K380A

SENSE

I-MON

U-MON

Iset

Uset

AGND

15V

TRG IN

SIG2 OUT

SIG1 OUT

ANALOG INTERFACE OUTPUT

OUT

RS 232

230V 50-60Hz

FUSE T4/250V

19 20

21 22

23 24 25

The analog interface facilitates the following functions:  Remote adjustment of output voltage and current with

analog control voltages ranging from 0 to 5 V, or 5 to 0 V

☞ chapter 5.8 / chapter 5.4

 External measurement or recording of output voltage and

current based on monitor signals, 0 to 10 V

☞ chapter 5.4 / chapter 5.5

 Supply external controllers with +15 V auxiliary power  Linking of several devices for master-slave operation

☞ chapter 5.9 / chapter 5.10

 Varying the internal output resistance value

☞ chapter 5.8

 Control of a selected device function via the floating trigger

input

☞ chapter 5.7

The electrical contacts of this interface are connected to components which may be damaged by electrostatic discharge. Ground yourself by grasping the housing before touching these contacts!

All of the control cables connected to the analog interface should be shielded. Ground the shield directly to the device using the shortest possible connection lead. One of the threaded holes for the plug protector at the rear panel can be used for this connection. Use a suitable screw and washer to secure the connection and assure good contact.

[22] OUTPUT Interface

The output interface offers two options:  Take constant voltage or constant current from the terminal

strip at the rear panel of the KONSTANTER.

 Connect sensing leads for compensation of voltage drops in

the output leads

☞ chapter 5.3

[23] Exhaust Vents

The exhaust vents are required for regulating the temperature inside the device. Warm air generated during operation of the device is discharged via these vents with the help of a temperature controlled fan.

The exhaust vents may not be closed or obstructed, because heat accumulation inside the device may result in malfunctioning, failure or damage to the KONSTANTER.

[24] Mains Input

Mains input with looped through mains outlet for inlet plug. The looped through mains outlets make it possible to directly connect up to three devices using two short power cables with inlet plugs. In this way, only one mains power cable is required to operate all three devices.

[25] Mains Fuse

Fusing for the 230 V mains power input

All devices: T 4.0 A / 250 V (6.3 x 32 mm)

Only fuses of the type and nominal current rating specified here may be used when replacing blown fuses. Tampering with fuses or fuse holders is absolutely prohibited (“repairing” fuses, short-circuiting fuse holders etc.).

GMC-I Messtechnik GmbH 19

4 Manual Operation and Device Functions

Uset / V

Uout

(1)

(2)

(3)

4.1 Menu Structure

After the power-up sequence has been completed, the device is switched to the basic operating mode by means of which the device’s basic functions can be executed, such as:

• Select desired output voltage Uset

• Select desired output current Iset

• Adjust allowable working range with soft-limits Ulim and Ilim

• Adjust overvoltage protection and overcurrent shutdown

Additional setup menus can be accessed with the function key. These include:

• SEt (setup) extended Setup functions

• AnIF (analog interface) Analog interface settings

• SEq (sequence function) Sequence function settings

• bUS (computer interface) Interface configuration settings

• CAL (calibration menu) Balance the

After selecting the desired setup menu with the function key, the respective menu level appears at the display.

The function and arrow keys are used to scroll through the respective menu levels and select the desired settings.

The <CE/LOCAL> key can be used to shift back up one level at a time, until the basic operating menu once again appears.

KONSTANTER

 Initializing the Procedure

☞ Slightly turn (1) the Uset knob [7].

! The display is switched from Uout (measured voltage value)

to Uset (voltage setpoint). The decimal place for the selected setting resolution blinks.

! The green Uout/V LED [6] goes out and the yellow Uset/V LED

[6] lights up. Continuous illumination of the Uset/V LED indicates that values are activated immediately during adjustment.

 Selecting Resolution

! 3 step widths are possible: 0.01 V, 0.1 V or 1 V. ! The blinking decimal place [5] indicates which step width will

be used for setpoint adjustment.

☞ Repeatedly press the <SELECT> key [13] until the desired

decimal place blinks at the display.

 Executing the Procedure

Values become immediately active during adjustment.

☞ Adjustment (2) with the Uset rotary knob [7]:

Clockwise rotation  Increases the value Counterclockwise rotation  Decreases the value

All intermediate values are run through semi-linearly and are read out to the output (assuming it is active).

4.2 Setting Output Voltage and Output Current

There are two ways to set output voltage and output current:

• Direct selection Changes become immediately effective when this method is utilized, assuming the output is active.

• Pre-selected settings Output voltage or current is preset with the scroll keys to the desired value. The selected value is activated at the output after acknowledging with the <ENTER> key.

4.2.1 Direct Selection (rotary knobs and scroll keys)

The operating concept allows for direct selection of output voltage and/or output current with the rotary knobs, with immediate activation of the new values at the output.

In the default configuration, current output values appear at the display with voltage at the left and current at the right-hand side. This is indicated by means of the two LEDs above the display. If the output is active (indicated by illumination of the red LED above the <OUTPUT> key), the LEDs in the diagram indicate the control state. Depending upon the selected output quantities and the load situation, either output voltage or output current is regulated. CV (constant voltage) indicates voltage regulation, and CC (constant current) indicates current regulation.

If the working point is not within the allowable control range, the power LED lights up.

The display can be switched to a representation of the corresponding setpoint by slightly turning one of the rotary knobs (Uset or Iset). This change is indicated by the respective LED above the display. The blinking decimal place indicates the resolution with which adjustment will take place. Resolution can be adjusted with the <SELECT> key.

The setting can then be changed to the desired value with the rotary knob.

As soon as the selected setpoints have been activated, they can also be adjusted with the scroll keys, in which case resolution can also be pre-selected.

Figure 4.2.1 a Continuous Adjustment of Uset

☞ Adjust (3) with the <> key or the <> key [11]

<> (increment)  Increases the value <> (decrement)  Decreases the value

! Each time the key is pressed, output voltage is changed

by an amount which corresponds to the value selected with the resolution setting function.

! Pressing and holding the respective key results in rapid

scrolling, regardless of the step width.

Attention! Uset may not be set to a value which exceeds Ulim!

Uset – Output Voltage

• Adjustment with the Uset rotary knob [7] is not enabled until 0.4 seconds after the digital display [5] has been switched to the respective function. This delay time prevents inadvertent changes to Uset during selection of the Uset display. The rotary knob must be adjusted after this time period has elapsed in order to change the Uset setting.

• After delay time has elapsed, output voltage is adjusted directly as the knob is rotated, if the output is active. The currently active value always appears at the display [5].

• If no adjustment is made for a period of 10 seconds, the display automatically returns to the measured voltage value Uout. The display can be immediately switched to the Uout value by pressing the <CE/LOCAL> key [16].

• There are two ways to adjust Uset manually: – Adjustment with immediate activation of the new value:

Adjustment of the setpoint has an immediate effect on load output quantities.

– Setpoint adjustment:

Adjustment of the setpoint does not effect load output quantities until after enabling.

20 GMC-I Messtechnik GmbH

Iset – Output Current

Iset / A

Iout

(1)

(2)

(3)

Uset / V

ENTERENTER

ENTER

Uout Iout

Select Uset

Uout Unchanged!

CE/LOCAL

Uout Iout

Iout Unchanged!

Activate

Select Iset

Uset

The procedure for selecting output current Iset is identical to the procedure for selecting output voltage Uset (4.1.2).

However, the following controls and displays must be substituted:

• Iset rotary knob (chapter 3 [10]

• Right-hand display (chapter 3 [8])

• Yellow Iset/A LED (chapter 3 [9])

• Setting resolution: 4 step widths are possible: 0.001 A / 0.01 A / 0.1 A / 1 A

Attention: Iset may not be set to a value which exceeds Ilim!

! Each time the key is pressed, output voltage is changed

by an amount which corresponds to the value selected with the resolution setting function.

! Pressing and holding the respective key results in rapid

scrolling, regardless of the step width.

☞ Acknowledge the selected value with the <ENTER> key

[15]. The new value is now activated at the output [4], and the yellow Uset/V LED [6] is continuously illuminated.

☞ Repeatedly press the <ENTER> key [15] in order to switch

back and forth between Uset and Iset.

4.2.2 Pre-selected Setting (ENTER, scroll keys)

Figure 4.2.2 a Adjusting Uset with a Specified Fixed Value

If the application requires that switching to a new setpoint takes place in a single jump by pressing a key (without semi-continuous adjustment), this can be accomplished as follows.

Proceed to the basic setting menu with the <CE/LOCAL> key, i.e. to the display of momentary output values. Press the <ENTER> key in order to switch to the pre-selection setting mode. After switching to this mode, the currently valid setpoint values appear at both displays (indicated by the LEDs above the display).

As a default function, voltage adjustment is always activated first, which is indicated by a blinking decimal place at the corresponding display. Repeatedly press the <ENTER> key in order to switch back and forth between current adjustment and voltage adjustment.

The new setpoint can be selected with the scroll keys (and only with the scroll keys), after selecting voltage or current setpoint adjustment and the desired resolution. The SET LED blinks in order to indicate that a change has been made but not yet activated. The new setpoint is activated after acknowledging with the <ENTER> key.

Pre-Selecting a Setpoint

☞

Press the <ENTER> key [15].

! The display [5] is switched from Uout (measured voltage value)

to Uset (voltage setpoint). The decimal place which corresponds to the selected resolution setting blinks.

! The green Uout/V LED goes out, and the yellow Uset/V LED [6]

lights up (as long as the Uset/V LED is continuously illuminated, direct adjustment with immediate activation of the new value can be executed with the rotary knob [7]).

 Setting resolution:

! 3 step widths are possible: 0.01 V, 0.1 V or 1 V. ☞ Repeatedly press the <SELECT> key [13] until the desired

decimal place (step width) blinks at the display.

 Output Voltage:

☞ Press either the <> key or the <> key [11]!

<> (increment)  Increases the value <> (decrement)  Decreases the value

! The yellow Uset/V LED[5] starts blinking. ! A blinking Uset/V LED indicates that new values are displayed

but not activated during adjustment. The old Uset value

remains active.

☞ Press the <> key or the <> key [11] until the desired

value appears at the display [5].

GMC-I Messtechnik GmbH 21

• Output voltage jumps from the old value to the new value in a single step (no intermediate values).

Attention: Uset may not be set to a value which exceeds Ulim!

4.3 Switching the Power Output On and Off

The <OUTPUT> key (chapter 3 [2]) functions independently of the current operating state of the KONSTANTER.

Details regarding control mode, protective function and status displays which provide information concerning the output’s operating mode are included in chapter 3 [3].

Closed Loop Control Mode

The power output can be activated or deactivated by pressing the <OUTPUT> key [2].

OUTPUT OFF OUTPUT ON

REMOTE status (remote control)

(chapter 3 [12], chapter 4.13)

The <OUTPUT> key [2] is disabled and has no function.

LOCAL LOCKED status (front panel controls disabled)

(chapter 3 [12], chapter 4.13)

The <OUTPUT> key [2] is disabled and has no function.

trG out (T_MODE OUT) and External Trigger Active

The output can be activated an deactivated with the trigger signal (trG parameter OUT selected).

If the power output has been disabled by applying an external trigger signal to the analog interface, it cannot be switched on, neither by means of a command nor with the keys. The corresponding command is not executed and bit 4 in event register B is set (output-on error). “Err 25” also appears briefly at the display as a warning in the event of manual operation.

The status of the power output by the red LED above the <OUTPUT> key [2]:

LED on = output activated LED off = output deactivated

In the case of OUTPUT OFF, the control mode displays are also switched off

(chapter 3 [3]).

If the output has be deactivated as a result of overtemperature protection, the yellow “240 W” LED [3] in the control mode display blinks. The output cannot be activated until the KONSTANTER has returned to its normal operating temperature.

(chapter 3 [4/22]) is indicated

If the Pon RCL function is active, the output is automatically reactivated after the device has returned to its normal operating temperature.

Functions which may influence the status of the output include:

• Manual and computer-aided settings for Iset may not exceed Ilim.

• Ilim cannot be set to a value which is less than current setpoint Iset. Iset must be reduced far enough to allow for the new Ilim setting.

Functions Meaning Manual

Operation

OVP (OVSEt) Overvoltage

protection

OCP Overcurrent

Pon (POWER_ON)

SEq Sequence chapter 4.7.4 page 70 trG (T_MODE) page 28 page 74

4.4

Limiting the Allowable Working Range: Ulim, Ilim

Allowable setting limits for voltage and current can be restricted in order to assure ideal matching to the working ranges of the connected power consumer. The Ulim and Ilim setting functions are provided to this end. Setting options can be selected with the respective <SELECT> key. Setting resolution is selected with the <RESOL> key. The setting itself is entered with the scroll keys. New settings become immediately active.

Attention!

These settings represent so-called soft limits. This means that values can be selected both manually and via the computer interface which lie within these limit values, and that a corresponding error message is otherwise generated.

Attention!

The actual output quantity is the sum of the digitally selected setpoint value and the setpoint value specified via the analog interface. This makes it possible to select values which exceed the specified soft limit.

protection

page 25 page 69

page 26 page 68

page 26 page 69

Remote Operation

Settings

See description on page 25.

4.5 Description of OVP and OCP Protection Functions

Protection for the connected power consumer and the KONSTANTER by means of the following functions:

OVP – overvoltage protection

Functions

• Protection for the connected power consumer

• If voltage at the output terminals exceeds the selected OVP value, the power output is deactivated.

• Triggering of overvoltage protection causes immediate (< 200 s) deactivation of the output (OUTPUT OFF). The HF power transmitter is disabled, and the electronic sink for discharging the output capacitors for approximately 350 ms is activated. In addition, bit 4 (OVPA) is set in event register A. Bit 4 remains set in status register A for as long as the trigger value is exceeded.

•The CV LED blinks as soon as overvoltage protection OVP is triggered (see also chapter 3 [3]), and the red OUTPUT LED goes out.

• As soon as the shutdown condition no longer exists, the power output can be reactivated by pressing the <OUTPUT> key, by transmitting a trigger signal to the analog interface or by means of computer control (“OUTPUT ON” lights up).

Settings

See description on page 25.

➅ red OUTPUT LED

Ulim – Setting the Upper Voltage Limit Value

Functions

• Upper setting limit (soft limit) for Uset

• Prevents inadvertent violation of the maximum voltage value when adjusting Uset.

• Protection for the connected power consumer

• Ulim has higher priority than Uset.

• Manual and computer-aided settings for Uset may not exceed Ulim.

• Ulim cannot be set to a value which is less than a previously selected Uset value. Uset must be reduced far enough to allow for the new Ulim setting.

Settings

See description on page 25.

Ilim – Setting the Upper Current Limit Value

Functions

• Upper setting limit (soft limit) for Iset

• Prevents inadvertent violation of the maximum current value when adjusting Iset.

• Protection for the connected power consumer

• Ilim has higher priority than Iset.

OCP – Overcurrent Protection

Functions

• Protects the power consumer from continuous overcurrent.

• Deactivates the power output when load current Iset has been reached, and the output is switched to the current regulating mode.

• Current can nevertheless be allowed to exceed Iset for specified, short periods of time by specifying a delay time (see below), for example:

! Starting current for electric motors ! In-rush current for capacitive power consumers ! For testing the breaking performance of circuit breakers,

motor protecting switches, fuses etc.

! For determining the short-term load capacity of contacts

and cables, as well as electrical and electronic components

! In order to maintain short response times when

programming voltage increases

•The CC LED blinks as soon as overvoltage protection OCP is triggered (see also chapter 3 [3]), and the red OUTPUT LED goes out.

• The power output can be reactivated at any time by pressing the <OUTPUT> key, by transmitting a trigger signal to the analog interface or by means of computer control (OUTPUT ON OUTPUT LED lights up).

➅ red

Settings

See description on page 26.

22 GMC-I Messtechnik GmbH

dLY – Output Off Delay for OCP

Functions

• Delay time prior to deactivation of the power output after current regulation has been triggered (Iout = Iset)

• Only enabled with activated OCP function (OCP ON)

• If output current Iout drops below Iset before DELAY time elapses, the shutdown sequence is aborted.

• If current regulation is triggered again, the routine is started over (at 00.00).

• The default setting after RESET (*RST) is 00.00.

Settings

See description on page 26.

4.7 Operating Menu via the FUNCTION Key

The FUNCTION menu consists of the following functions for configuring the KONSTANTER’s parameters:

Function group Function Parameter (numeric / text)

■ Setup

SEt Ulim NP: xx.xx

Ilim NP: xx.xx OVP NP: xxx.x OCP TP: oFF / on dLY NP: xx.xx Pon TP: rSt / SbY / rcL



rnd TP: 0 / -1 / -2

TP: oFF / on / rSt

4.6 Display of Momentary Output Values Uout, Iout

and Pout

Uout – Momentary Measured Voltage Value

• Appears at the left-hand display [5].

•The green Uout/V LED [6] lights up and indicates display of the momentary measured voltage value.

• The measured voltage value is automatically displayed again, approximately 10 seconds after the last setting has been made.

• The momentary measured voltage value is displayed immediately if the user exits the device functions setting mode by pressing the <CE/LOCAL> key [16].

Iout – Momentary Measured Current Value

• Appears at the right-hand display [8].

• The green Iout/A LED [9] lights up and indicates display of the momentary measured current value.

• The measured current value is automatically displayed again, approximately 10 seconds after the last setting has been made.

• The momentary measured current value is displayed immediately if the user exits the device functions setting mode by pressing the <CE/LOCAL> key [16]

Pout – Display Momentary Output Power

Calculated internally based upon momentary measured values Uout and Iout.

Settings

See description in chapter 4.8.1.

UI_ – Display Measured Values in

Functions

• Reads out stored values for Umin, Umax, Imin and Imax at the display, or via the computer interface.

• Stored Min-Max values can be read out regardless of the status selected for the MINMAX function.

Settings

See description in chapter 4.8.1.

U/I Min-Max Memory

■ Analog Interface

AnIF trG TP: oFF / out / rcL / SEq / LLO / UI



SiG1 TP: oFF / on / out / Mode / SEq /

SSEt / U-Lo / U-Hi / I-Lo / I-Hi

SiG2 TP: oFF / on / out / Mode / SEq /

SSEt / U-Lo / U-Hi / I-Lo / I-Hi

■ Sequence Function

SEq* tSEt NP: xx.xx

SSEt NP: oFF / on tdEF NP: xx.xx Strt NP: xxx (11... 252) StoP NP: xxx (12... 253) rEP NP: xxx (cont. or 1 ... 255) SEq** TP: Go, Strt, StoP, hold, StEP, cont.

* Sequence function: appears at left-hand display, right-hand display is blank. ** Parameter selection for sequence control: appears at left-hand display, selected parameter

appears at right-hand display.

■ Interface Configuration

buS Addr NP: 0 / 1 / ... / 13 /... / 30 / (UNL)

bAUd NP: 50 / 75 / 150 / 200 / ... / 4800 /

9600 / 19200 dbit NP: 7 / 8 Pbit TP: nonE / ZEro / EVEn / odd / onE Sbit NP: 1 / 2

■ Adjustment (calibration, chapter 7)

CAL dAtE TP: mm.yylast/new adjustment date

CAL TP: Strt MEAS UoFF UoFF NP: x.xxxentry of ext. measured value U MEAS UFS UFS NP: xx.xxentry of ext. measured value U MEAS IoFF IoFF NP: x.xxxentry of ext. measured value I MEAS IFS IFS NP: xx.xxentry of ext. measured value I CAL End

NP: Numeric Parameters

• Can be selected as a specified value or as a value within an interval with corresponding resolution.

•Adjust resolution (decimal place) by pressing the <SELECT> key.

• Select with the <> key or the <> key.

• Displayed value = selected value.

TP: Text Parameters

• Select parameter with the <> key or the <> key.

• Acknowledge the selected value by pressing the <ENTER> key.

GMC-I Messtechnik GmbH 23

Settings

FUNCTION

ENTER

FUNCTION

Jump to last edited function group

Jump to last edited function

e.g.

CE/LOCAL

FUNCTION

☞

Press the <FUNCTION> key [14] at the front of the KONSTANTER.

If no settings have yet been changed via the FUNCTION menu after switching the device on, the SEt function group is accessed upon pressing the <FUNCTION> key.

If settings have already been changed in the function menu, the last edited function group or function is accessed automatically.

• Accessing the last edited function:

☞ If you want to configure a function included in the current

function group, select the function group by pressing the <FUNCTION> key. Detailed information is included in the respective section of this chapter.

☞ If you want to configure a function from another function

group, first return to the function groups menu by pressing the <CE/LOCAL> key.

• Forward scrolling through function groups in this menu:

☞ Repeatedly press the <FUNCTION> key or

☞ Press and hold the <FUNCTION> key and repeatedly press

the <> key at the same time.

• Reverse scrolling through function groups in this menu:

☞ Press and hold the <FUNCTION> key and repeatedly press

the <> key at the same time.

• Accessing functions in the selected function group:

☞ Press the <ENTER> key.

Figure 4.7 a Accessing the Functions Submenu

☞ If the function groups menu is currently open, you can

access the following function groups:

Figure 4.7 b Switching Amongst Individual Function Groups

Note

The order in which the commands are explained in the following sections corresponds to the actual sequence for manual operation of the SSP KONSTANTER. This should make it easy to configure device functions and parameters without leafing back and forth through the instructions.

☞ If the desired function group does not appear immediately

at the left-hand display, repeatedly press the <FUNCTION> key until the name of the desired function group appears at the left-hand display (SEt in this example).

24 GMC-I Messtechnik GmbH

4.7.1 SET – “Setup” Function Group

FUNCTION

FUNCTION Press on ce

ENTER

Press repeatedly if necessary

Jump to last edited setup function

Cursor position

SELECT

Resolution of

numeric parameter

Select a value for the upper voltage limit (numeric parameter)

CE/LOCAL

Uout

Iout

Ulim – Upper Voltage Setting Limit

Functions

See functions description on page 22.

Settings

The procedure is described in principle in chapter 4.7.

The Ulim display appears in the window for the setup function, along with a related numeric parameter [V].

Ilim – Upper Current Setting Limit

Functions

See functions description on page 22.

Settings

The procedure is described in principle in chapter 4.7.

! The Ilim display appears in

the window for the setup function, along with a related numeric parameter [A].

OVP – Overvoltage Protection Trigger Value

Functions

See functions description on page 22.

Settings

The procedure is described in principle in chapter 4.7.

! The OVP display appears in

the window for the setup function, along with a related numeric parameter [V].

☞ The OVP trigger value should be set at least 1 V higher than the

desired USET output voltage in order to prevent undesired triggering of the OVP function resulting from overshooting due to sudden output discharging (minimum values: chapter 1.5.3, “Electrical Data”)!

☞

The

OVP

trigger value makes reference to the prevailing voltage value

between the output terminals of the SSP. This voltage is increased

USET

by the

parameter during sensing mode operation (remote

sensing) by an amount equal to voltage drop at the output leads. For

OVP

and

USET

this reason, the above defined difference between must be correspondingly increased during sensing mode operation.

☞ The selected parameter becomes immediately active!

Note

• Overvoltage protection response time is less than 200 μs. Output voltage generated by the device may exceed OVSET for the duration of this response time. Maximum overshooting can be approximately calculated as follows:

Uout = ISET [A] x 200 [μs] / Cout [μF] ISET = selected current setpoint Cout = capacitance of the output capacitor Subsequent discharging time for the output capacitor

Figure 4.7.1 a Path to Ulim Settings

GMC-I Messtechnik GmbH 25

depends upon load, and corresponds to the specified values for response time at Unom 1 V included in chapter 1.5.3.

• Possible causes for triggering overvoltage protection are listed in chapter 3 [3], “Control Modes”.

OCP – Overcurrent Protection

Select the text parameter from an options loop

From the SEt function group

ENTER

CE/LOCAL FUNCTION

Select the text parameter from an options loop

From the SEt function group

ENTER

CE/LOCAL FUNCTION

Pon – Specifying a Power-On Status

Functions

See functions description on page 22.

Setting Parameter

☞

OFF: OCP function is inactive Continuous current limiting (current regulation)

☞ ON: OCP function activated

The output is deactivated as soon as current limiting has been active for the specified DELAY time.

☞ The selected text parameter does not become active until the

<ENTER> key is pressed!

Settings

The procedure is described in principle in chapter 4.7.

! The OCP display and a related

text parameter appear in the setup function window.

Functions

• Use automatic KONSTANTER configuration after power on.

Setting Parameters:

☞

rSt: (RESET) Factory default settings are utilized

☞ SbY: (STANDBY) Same settings as prior to shutdown, power

output remains inactive (OUTPUT OFF) Disabled panel controls are re-enabled after mains ON. From firmware version 4.003 onwards: Disabled panel controls remain blocked even after mains ON.

☞ rcl (RECALL) Same settings as prior to shutdown.

Disabled panel controls remain blocked even after mains ON.

Settings

The procedure is described in principle in chapter 4.7.

! The Pon display and a related text parameter appear in the

setup function window.

Figure 4.7.1 b Path to Selection of the OCP Text Parameter

Note

Load current for the output capacitor is also acquired by the current regulator, and is limited to a value of Iset Ioad. If the OCP function has been activated and ISET and DELAY have been set to low values, the output may even be deactivated if output voltage is increased. For this reason, DELAY must at first be set somewhat higher than the resulting output voltage response time.

dLY – Output Off Delay for OCP

Functions

See functions description on page 23.

Settings

The procedure is described in principle in chapter 4.7.

The

DELAY

the window for the setup function, along with a related numeric parameter [t].

display appears in

Figure 4.7.1 c Path to Selection of the Pon Text Parameter

Note

• The status of the Pon function is not saved as a device setting to SETUP memory with the <SAVE> key.

• The following settings are recommended, depending upon how the KONSTANTERs is used:

! Pon rSt: Use in computer controlled systems ! Pon SbY: Common laboratory use ! Pon rcL: Applications which must continue in an

unchanged fashion after power failures.

26 GMC-I Messtechnik GmbH

UI_ – U/I Min-Max Measured Value Memory (MINMAX)

Select the text parameter from an options loop

From the SEt function group

ENTER

CE/LOCAL FUNCTION

Select the text parameter from an options loop

From the SEt function group

ENTER

CE/LOCAL FUNCTION

rnd – Rounding Off the Displayed Measured Value

Functions

• Save minimum and maximum measured voltage and current values.

• Reads out stored values for Umin, Umax, Imin and Imax at the display, or via the computer interface.

• The MINMAX function can be temporarily set to OFF, for example before deactivating the output when changing devices under test. Stored values are then no longer updated, nor are they automatically reset.

• Stored Min-Max values can be read out regardless of the status selected for the MINMAX function.

• Stored Min-Max values can always be reset with the UI

_ RST

command.

• Stored Min-Max values can also be reset with the *RST command, or with the key combination <CE/LOCAL> + <ENTER> (= RESET).

• The status of the MINMAX function is also saved to SETUP memory by pressing the SAVE key.

•If the Pon function is set to SbY or rcl, the MINMAX function is activated upon power-up, but previously measured Min-Max values are lost when the KONSTANTER is switched off.

•The MINMAX function can also be controlled via the trigger input at the analog interface.

Setting Parameter

☞

OFF: Storage of Min-Max values is deactivated

☞ ON: Storage of Min-Max values is activated

☞ RST: contents in the Min-Max memory are reset or replaced

with the momentary measured value:

Umin = Uout Umax = Uout Imin = Iout Imax = Iout

Functions

• Only effective for Uout and Iout measuring function

• Number of decimal places which appear at the display

• Stabilizes the display when fluctuation is expected at the last decimal place of the measured value

Setting Parameter

☞

0: no rounding

☞ -1: Rounded off one decimal place

☞ -2: Rounded off two decimal places

Settings

The procedure is described in principle in chapter 4.7.

! The rnd display and a related text

parameter appear in the setup function window.

Settings

The procedure is described in principle in chapter 4.7.

! The UI_ display and a related text

parameter appear in the setup function window.

☞ Default setting after RESET (*RST): OFF!

Figure 4.7.1 d Path to Selection of the Pon Text Parameter

Figure 4.7.1 e Path to Selection of the rnd Text Parameter

☞ Default setting after RESET (*RST): unchanged

GMC-I Messtechnik GmbH 27

4.7.2 AnIF – “Analog Interface” Function Group

Select the text parameter from an options loop

From the AniF function group

ENTER

CE/LOCAL FUNCTION

The analog interface allows for remote control of the KONSTANTER. An isolated digital control input (TRG IN+ / TRG IN-) and digital signal outputs (SIG1 / SIG2) are available in addition to analog setting options.

Other devices can be controlled in this way (e.g. counters, alarms, SSP KONSTANTERs and many more). A master-slave system can be set up in combination with a second or several SSP KONSTANTERs (see also chapter 5).

Observe specified maximum current and voltage values for signal outputs.

SEQUENCE: Sequential execution of specified values for Iset, Uset and dwell time (see also chapter 4.7.3).

The SEQUENCE function group must be set to SEQUENCE ON for this function.

TRIGGER Signal Influence on SEQUENCE Status

LOW _

HIGH _ LOW Ends sequence execution by jumping to

HIGH

The SEQUENCE function is started beginning with the start address,

the stop address.

SEQUENCE GO

☞ LLO: (LOCAL LOCKED) Operation via front panel controls is

disabled.

trG – Function Selection for Trigger Input

Functions

• Floating optocoupler input (TRG IN) at the analog interface

• The trigger input is controlled with a digital signal (low: 0 V, high: 4 ... 26 V).

• Response time is approximately 1 to 15 ms.

Setting Parameter

☞

OFF: Trigger input function is deactivated, signals at the trigger input are ignored.

☞ OUT: Trigger input influences the OUTPUT: output on / off

TRIGGER Signal Influence on OUTPUT Status

LOW Status depends upon manual setting or

LOW _

HIGH OUTPUT in the OFF state,

HIGH

HIGH OUTPUT remains OFF or

_ LOW OUTPUT is activated,

programming command

OUTPUT is switched OFF

cannot be switched on – neither manually nor with a programming command

except in the event of OTP or OVP

☞ RCL: Memory recall from defined start to defined stop address

(step-by-step sequence control)

TRIGGER Signal Influence on step-by-step control

Edge Low  High

Start trigger signal

TRIGGER Signal Influence on Front Panel Controls

LOW All front panel controls are functional.

HIGH All front panel controls are disabled,

except for the mains switch, no activation with the LOCAL key.

☞ UI_

MIN-MAX function: Storage of Min-Max values for U and I is controlled by the trigger, Min-Max function active, (UI _

TRIGGER Signal Influence on Min-Max Status

LOW The Min-Max function is active.

LOW _

HIGH The Min-Max function is inactive.

HIGH

HIGH The Min-Max function is deactivated.

Levels in the in Min-Max memories remain unchanged.

_ LOW Values in the Min-Max memories are

replaced with momentary output values. The Min-Max function is activated.

ON)

☞ The status of the trG function is not saved as a device setting

with the SAVE key.

Settings

☞

Procedure for configuring trG ➁ see also chapter 4.7

! The trG display and a related text

parameter appear in the AnIF function window.

☞ Default setting after RESET (*RST):

unchanged

HIGH  The trigger signal is a high pulse with

a duration of 11 to 800 ms.  A high pulse with a duration > 1.0 s

resets the address counter to the start address at any point in time, and execution begins with the next trigger signal.

Edge High  Low

The high  low edge of the (short) trigger signal results in step-by-step control of the currently selected sequence, regardless of the specified time and number of repetitions.

Recall of the memory’s contents begins with the START address. Each trigger signal increasers the address by 1, until the STOP address is reached. The next pulse once again causes execution of the contents of the START address.

Figure 4.7.2 a Path to Selection of the trG Text Parameter

☞ SEQ: Controlling Execution of the SEQUENCE Function

28 GMC-I Messtechnik GmbH

SiG1 – Signal Output 1

Select the text parameter from an options loop

From the AniF function group

ENTER

CE/LOCAL FUNCTION

Functions

• Digital open collector output with reference to AGND, max. switching voltage min. 30 V DC, max. switching current min. 20 mA (e.g. ext. load shedding relay). Indicates the status of the power output.

• If an event occurs which is associated with the selected parameter, a corresponding signal is generated at the output.

• Used to link the OUTPUT function via the trigger input in the case of parallel or series (master-slave) connection of several SSP KONSTANTERs.

• Control of an external output relay is possible.

• As a status signal for monitoring devices

• As a freely assignable switching output

Setting Parameters SIG1 OUT Status

☞ OFF

Always passive high

☞ ON

Always active low

☞ OUT

Power output: OUTPUT ON OUTPUT OFF

Passive high Active low

☞ ModE

Control mode signal: Constant current regulation Overload (Pmax) Constant voltage, output Off

Active low Active low Passive high

☞ SEq

Status with running sequence

Active low

☞ SSEt

If SSEt is set to ON for special memory location in the SEQUENCE

otherwise

Active low

Passive high

☞ U_LO

Umeas < Uset (reference value memory Umeas  Uset254)

Active low Passive high

☞ U_HI

Umeas > Uset (reference value memory Umeas  Uset255)

Active low Passive high

☞ I_LO

Imeas < Iset (reference value memory Imeas  Iset254)

Active low passive high

☞ I_HI

Imeas > Iset (reference value memory Imeas  Iset255)

Active low Passive high

Setting

☞

Procedure for selecting Sig1: see also chapter 4.7, “Settings”.

! The Sig1 display and a related text

parameter (status) appear in the AnIF function window.

Figure 4.7.2 b Path to Selection of the SiG1 Text Parameter

SiG2 – Signal Output 2

Function and Parameters

☞

Identical to SiG1, page 29

Settings

☞

Identical to SiG1, page 29

The SSEt parameter must be set to ON for a certain memory location in the SEQUENCE function group.

☞ When the SEQUENCE is run, an signal is additionally generated

for the read-out of Uset and Iset when this particular memory location is executed.

☞ The signal is available at the outputs of the analog interface

(SiG1 / SiG2 / SiG1 + SiG2) for the respectively selected dwell time tSEt or tdEF.

GMC-I Messtechnik GmbH 29

4.7.3 SEq – The Sequence Function Group

U/V

4,5

t/ms

15 2000 20

Tse t

Range of Memory Locations

111 253 255

SEQUENCE

Occupied Memory Locations

SEQUENCE

SEQ

SEQUENCE

Range of Memory Locations

111 253 255

Occupied Memory Locations

SEQUENCE

SEQ

occ. loc. occ. mem. loc. occ. mem. loc.

SEQUENCE

Description

Test sequences can be generated with the SEQUENCE function group (in accordance with DIN if desired). Setpoints are specified for voltage (Uset) and for current (Iset), as well as for the associated time intervals (tset) to this end. In addition, a signal for external processing can be specified for each test step (Sset).

Figure 4.7.3 a Test Signal to Electrical System Simulation during Start-Up

Test sequences can be saved, and changed as required. The test sequence automatically runs through all specified values

after it has been started, beginning with a specified start address, and ending with a specified stop address. The number of sequence repetitions can be selected. The sequence can be stopped at any time, and then resumed.

The sequence can also be run step-by-step (manual control), independent of programmed time intervals.

Functions

• Allows for automated, reproducible execution of a series of USEt, ISEt, tSEt and SSEt values which have been stored to memory with the <SAVE> function.

Memory Occupancy

• A defined memory location (addresses 11 through 255) is assigned to each test step which contains specified setpoints for USEt, ISEt, tSEt and SSEt.

• A SEQUENCE consists of at least one test step.

• The entire range of memory locations for the sequence may only be occupied by a single sequence.

• Several smaller sequences may also be generated over the entire range of memory locations.

• New sequences can also be generated consisting of subsegments of occupied memory location ranges by selecting new start and stop addresses.

Responses to Sequence Start and Stop

•The power output is automatically activated (OUTPUT ON) when the SEQUENCE function is initialized (automatic sequence run and step-by-step control).

• The power output can be controlled at all times with the OUTPUT function during execution of the sequence and during pauses.

• Stopping the sequence has not effect on the contents of the sequence memory locations.

• The contents of the memory location with the StoP address are executed as the last function. The sequence can then be ended, or can be started over again at the start address, depending upon the number of repetitions and the contents of the stop address location.

• If the memory location assigned to the stop address contains setpoints (i.e. if it is not empty), the output remains active (OUTPUT ON) using the stop address setpoints after the sequence has been completed.

• If the memory location assigned to the stop address is empty, the output is deactivated automatically at this point in time (OUTPUT OFF).

• The fact that a sequence run is active can be determined by querying bit 7 SEQB (= SEQuence Busy) in condition register A (CRA). The end of the sequence is indicated by bit 7 SEQI in event register A (ERA).

Number of Repetitions and Remaining Repetition Counters

• A sequence can be run 1 to 255 times, or indefinitely until it is stopped manually (see also page 33).

• If automatic sequence repetitions have been programmed, (rEP = 1 ... 255 or 0 = continuous), the pointer jumps directly to the “Strt” memory location after the contents of the “StoP” memory location have been executed, and the sequences is continued.

• When the sequence jumps from the stop to the start address during an automatic sequence run, the remaining repetitions counter is reduced by 1 (rrep = rrep - 1).

• When the sequence jumps from the stop to the start address during step-by-step control, the remaining repetitions counter is not reduced (rrep = rrep).

Response to Empty Memory Locations

• Empty memory locations at the beginning of a sequence are skipped. The first memory location with valid setpoints is executed.

• Empty memory locations may be included between the start and stop addresses, but these are skipped.

• Empty stop address: – rrep > 1: If a remaining number of repetitions has yet to be run, the empty memory location assigned to the stop address is skipped. The memory location assigned to the start address is then executed. – rrep = 1: After the last repetition has been run, the empty memory location assigned to the stopped address results in an OUTPUT OFF status.

30 GMC-I Messtechnik GmbH

Figure 4.7.3 b Range of Memory Locations and Sequences

tSEt – Memory Location-Specific Dwell Time

Select the text parameter from an options loop

ENTER

CE/LOCAL FUNCTION

SELECT

Cursor position

Resolution of

numeric parameter

From the SEq function group

Select the text parameter from an options loop

From the SEq function group

ENTER

CE/LOCAL FUNCTION

SSEt – Setting a Digital Switching Function

Functions

Special dwell time (see also Figure 4.7.3 a):

• For the voltage-current value pair at a specific memory location within a SEQUENCE

• For all status signals generated for these memory locations

Setting Range

00.00 s The tdEF value is used.

00.01 s to 99.99 s Maximum resolution: 0.01 s

99.99 s Assignment of the specified time to several consecutive SEQUENCE memory locations with identical voltage and current values.

Values include rise time and decay time (see also Figure 4.7.3 a). Edge times are only assure within a limited load impedance range

(see also Technical Data).

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting tSEt, (see also chapter 4.7):

! The tSEt display appears in the window for the SEq function,

along with a related numeric parameter [s].

Functions

• Preparation of the SSP KONSTANTER for the read-out of a status signal from a specific memory location.

• The duration of the signal depends upon the dwell time, tSEt or tdEF, selected for the memory location.

• The signal is read out to the analog interface’s SiG1 and/or SiG2 outputs.

• Prerequisite: The desired output (SiG1, SiG2 or SiG1 and SiG2) must be prepared with the SSEt parameter in the AniF function menu (see also page 29).

Setting Parameter

☞

OFF: No status signal

☞ ON: Signal outputs prepared for read-out of a status signal

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting SSEt, (see also chapter 4.7 “Settings”):

! The SSet display and a related text parameter appear in the

SEq function window.

Figure 4.7.3 c Path to tSEt Settings

☞ Set resolution, i.e. the decimal place (cursor position) of the

numeric parameter, by repeatedly pressing the <SELECT> key.

☞ Enter dwell time based on the previously entered resolution

value using the <> key or the <> key.

☞ After selecting the value, jump to the next or the previous

sequence function by pressing the <FUNCTION> key, or by simultaneously pressing the <FUNCTION> key and the <> key or the <> key.

☞ The last selected and displayed value for the numeric dwell

time parameter is used as a default setting.

Figure 4.7.3 d Path to Selection of the SSEt Text Parameter

☞ Select the desired parameter with the <> key or the <> key.

☞ Acknowledge your selection with the <ENTER> key.

! Parameters can be scrolled through in a loop with the <> key

or the > key.

☞ Advance through the SEq functions menu by pressing the

<FUNCTION> key or the <FUNCTION><> and <> keys, or press the <CE/LOCA L> key to jump back to the function group menu (FUNCTION).

GMC-I Messtechnik GmbH 31

tdEF – Dwell Time Independent of Memory Location

Select the text parameter from an options loop

From the SEq function group

ENTER

CE/LOCAL FUNCTION

SELECT

Cursor position

Resolution of

numeric parameter

Possible selections for the memory location start address



From the SEq function group

Select the start address

FUNCTION

Strt – Sequence Start Address

Functions

• Default dwell time: – For all voltage-current value pairs included in a sequence to whose memory locations no special dwell time has been assigned

(tSEt = 00.00)

– For all status signals generated for these memory locations

• tdEF is used primarily to speed up programming if the value for a certain dwell time is used repeatedly within a given

SEQUENCE.

Setting Range

0.01 s to 99.99 s, maximum resolution: 0.01 s

Settings (see sequence settings and execution on page 35)

☞ Do not enter tdEF until all Uset, Iset and tset values have been

assigned to all necessary memory locations!

☞ Procedure for selecting tdEF (see also chapter 4.7, “Settings”):

! The tdEF display appears in the window for the SEq function,

along with a related numeric parameter [s].

Functions

• The beginning of a range within which memory locations or content will be deleted or added

•The SEQUENCE is always defined by means of a start address and a

stop address.

• The address of the memory location from which the SEQUENCE will start

• The start address can correspond to any memory location from 11 to 255.

•The start address is selected immediately before initially starting a new SEQUENCE.

•The last selected start address is always valid for any given sequence, regardless of the point in time at which the sequence is started.

• The start address for a sequence change can be selected independent of the stop address.

! The contents of the memory location with the Strt address are

executed as the first function.

Setting Parameter

11 Lowest possible memory location Strt address 255 Highest possible memory location Strt address

Figure 4.7.3 e Path to tdEF Settings

☞ Set resolution, i.e. the decimal place (cursor position) of the

numeric parameter by repeatedly pressing the <SELECT> key.

☞ Enter dwell time based on the previously entered resolution

value using the <> key or the <> key.

☞ After selecting the value, jump to the next or the previous

sequence function by pressing the <FUNCTION> key, or by simultaneously pressing the <FUNCTION> key and the <> key or the <> key.

! The last selected and displayed value for the numeric dwell

time parameter is used as a default setting.

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting Strt, (see also chapter 4.7 “Settings”):

! The Strt display appears in the window for the SEq function,

along with a related numeric parameter.

Figure 4.7.3 f Path to Start Address Selection

☞ Select the desired memory location with the <> or the <>

key.

☞ After selecting the value, jump to the next or the previous

sequence function by pressing the <FUNCTION> key, or by simultaneously pressing the <FUNCTION> key and the <> key or the <> key.

! The last selected and displayed value for the Strt address is

used as a default setting.

32 GMC-I Messtechnik GmbH

StoP – Sequence Stop Address

Possible selections for the memory location stop address



From the SEq function group

Select the stop address

FUNCTION

From the SEq function group

Select a value for number of repetitions

FUNCTION

rEP – Sequence Repetitions

Functions

• The end of a range within which memory locations or content will be deleted or added

•

The

SEQUENCE

is always

defined by means of a start address and a stop

address.

• Memory location at which a SEQUENCE will be ended

• The stop address can correspond to any memory location from 11 to 255.

•The stop address is selected immediately before initially starting a new SEQUENCE.

•The last selected stop address is always valid for any given sequence, regardless of the point in time at which the sequence is started.

• The stop address for a sequence change can be selected independent of the stop address.

! The contents of the memory location with the stop address are

executed as the last function (reP 

Setting Parameter

11 Lowest possible memory location stop address

255 Highest possible memory location stop address

Functions

• Defines the number of SEQUENCE repetitions from the start address to the stop address.

•The SEQUENCE is run from the selected start address to the stop address. If repetitions have been programmed, the pointer automatically jumps from the stop address back to the start address, and the sequence is started over again.

•The rEP value is stored to the setup memory as a device setting with the SAVE key.

Setting Parameter

cont Continuous repetition until the sequence is stopped

manually (page 36 ff,) or by means of computer control (page 70)

1 ... 255 Number of possible repetitions

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting rEP, (see also chapter 4.7):

! The rEP display appears in the window for the SEq function,

along with a related numeric parameter [s].

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting StoP, see also chapter 4.7:

! The StoP display appears in the window for the SEq function,

along with a related numeric parameter.

Figure 4.7.3 g Path to Stop Address Selection

☞

Select the memory location with the <> key or the <> key.

☞ After selecting the value, jump to the next or the previous

sequence function by pressing the <FUNCTION> key, or by simultaneously pressing the <FUNCTION> key and the <> key or the <> key.

! The last selected and displayed value for the numeric stop

address parameter is used as a default setting.

Figure 4.7.3 h Path to rEP Setting

☞ Select the desired number of repetitions with the <> or the

<> key.

☞ After selecting the value, jump to the next or the previous

sequence function by pressing the <FUNCTION> key, or by simultaneously pressing the <FUNCTION> key and the <> key or the <> key.

! The last selected and displayed value for the numeric

parameter (number of repetitions) is used as a default setting.

GMC-I Messtechnik GmbH 33

SEq – Sequence, Automatic Memory Recall

Select the text parameter from an options loop

From the SEq function group

ENTER

CE/LOCAL FUNCTION

Continue in the SEq function group

ENTER

FUNCTION

Jump to the start address or the

first address with valid contents

Step-by-step control

LOCKED/SEQ

Continue in the SEq function group

ENTER

FUNCTION

Sequence running

LOCKED/SEQ

Select the

from an options loop

From the SEq function group

ENTER

CE/LOCAL

FUNCTION

ENTER

text parameter

Functions

• Controls automatic and step-by-step sequence runs.

Setting Parameter

☞

Strt: select step-by-step control , jump to start address (status: RDY HOLD), execute command with the <ENTER> key.

☞ GO: select SEQUENCE, jump to start address and start (status:

RDY RUN), execute command with the <ENTER> key.

Additional Setting Parameters with running or suspended sequence, and in step-by-step mode

☞

hold: SEQUENCE runs stops at current address (status: RUN  HOLD), execute command with the <ENTER> key.

☞ cont: SEQUENCE is resumed at next address (status: HOLD 

RUN), execute command with the <ENTER> key.

☞ StEP: execute next memory location and start (status: HOLD

HOLD), execute command with the <ENTER> key.

☞ StoP: SEQUENCE is stopped and jumps to stop address (status:

RUN RDY or HOLD RDY), execute command with the

<ENTER> key.

! The first valid memory location is now executed, and the

values saved to this location (Uset, Iset and SSEt) are read out to the power output and the signal output. The LOCKED/SEQ LED blinks slowly .

Figure 4.7.3 k Preparing for Automatic SEQUENCE Control

! In this case, all memory locations are executed, one after the

other, from the start address to the stop address, and the respective values saved to each location (Uset, Iset, tdef/tset and SSEt) are read out to the power output and the signal output. The LOCKED/SEQ LED blinks rapidly. .

Settings (see sequence settings and execution on page 35)

☞ Procedure for selecting SEq, (see also chapter 4.7): ! The SEq display appears in the window for the SEq function.

☞ Press the <ENTER> key in order to switch to the SEQUENCE

menu.

☞ Repeatedly press the <FUNCTION> key (max. 6 times) until the

SEq Go function appears.

Figure 4.7.3 i Preparing a SEQUENCE

☞ Acknowledge the sequence with the <ENTER> key.

Note

Automatic and step-by-step sequence control (external trigger

or setting command) are not interlocked.

! After the SEQUENCE run has been started, various error

messages may appear for a period of approximately 1 second

(see also page 36 and the appendix).

! If an error occurs during execution of the sequence, bit 5 SEQE

(SEQuence Error) is set in event register B (ERB).

☞ The procedure shown in Figure 4.7.3 l must be used for

setting up and starting sequences for SSP KONSTANTERs with software version < REL. 003.

In this case, sequences can only be set up and started if the

SEQ ON test parameter has been selected after entering the SEq menu.

Figure 4.7.3 j Preparing for Step-by-Step Control

34 GMC-I Messtechnik GmbH

Figure 4.7.3 l SEQUENCE preparation with software

version < REL. 003

ENTER

SAVE

The start address must be entered, and the ENTER key then increases

FUNCTION

ENTER

FUNCTION

Function Groups Menu

Functions

CE/LOCAL

FUNCTION

Repeatedly press the FUNCTION key until SEq appears at the left-hand

Uset

Iset

FUNCTION

the address by 1 automatically.

FUNCTION

13a

Display Blinks

ENTER

display

Setting all Required Values for a Sequence

Read the detailed explanations included in chapter 4.6 and 4.7.3 first.

1 Press the <FUNCTION>. key.

2The function groups or functions menu appears. 3 If the functions menu is not displayed, press the <CE/LOCAL>

key in order to return to the function groups menu.

4 If the functions menu is displayed, repeatedly press the

<FUNCTION> key until SEq appears at the left-hand display (the right-hand display remains blank).

5 Press the <ENTER> key to access the sequence functions

menu. tSEt appears at the left-hand display.

6Adjust Uset and Iset with the rotary knob and/or the <> and

<> keys if necessary.

[Uset and Iset value can be adjusted at any time, and assigned to a memory location by pressing the <SAVE> and <ENTER> keys.] The display can be returned immediately to the previously edited function (in this case tSEt)

7 Select a tSEt value with the <> or the <> key if necessary,

and continue by pressing the <FUNCTION> key.

8Set SSEt to on or oFF with the <> key or the <> key. 9

Press the <

10 Select the desired memory locations (between 11 and 255)

with the <> key or the <> key.

11 Press the <ENTER

location and the

12 Enter the next setting for Uset, Iset, tset and SSEt , and

continue until all values have been entered for the entire sequence.Use rotary knobs only for Uset and Iset settings. Press the <FUNCTION> and <> keys for tset settings. Press the <FUNCTION> key only for SSEt settings.

13 After saving the last step of the sequence loop (13a) with the

<SAVE> and <ENTER> keys, press the <FUNCTION> key in order to continue to the tdEF setting.

14 Enter a tdEF value if necessary, acknowledge by pressing the

<FUNCTION> key and/or jump to the next function.

15 Strt - Entry of a sequence start address is prompted. 16 Select a start address with the <> key or the <> key if

necessary, acknowledge by pressing the <FUNCTION> key and/or jump to the next function.

17 StoP - Entry of a sequence stop address is prompted. 18 Select a stop address with the <> key or the <> key if

necessary, acknowledge by pressing the <FUNCTION> key and/or jump to the next function.

19 rEP - Entry of the number of sequence repetitions is prompted. 20 Select the desired number of repetitions with the <> key or

the <> key if necessary, acknowledge by pressing the <FUNCTION> key and/or jump to the next function.

21 SEq Go blinks at the display, indicating that the sequence can

now be started.

22 Press the <ENTER> key. The sequence is run using the

selected values.

by pressing the <FUNCTION> key.

SAVE

> key. The memory location (

memory address is automatically increased by 1.

Sto

) is displayed.

> key. The setting is stored to the memory

Jump from the Uset / Iset settings to the last edited function, or from a given function to the next function by pressing the <FUNCTION> key.

Press the <FUNCTION> key and the <> key to jump back to the previous function.

The LOCKED/SEQ LED blinks to indicate that a sequence is running. The example included here is only intended to demonstrate reliable

sequence programming. You can use other procedures as well, which may be easier or faster for you.

GMC-I Messtechnik GmbH 35

Figure 4.7.3 m Setting all Required Values for a SEQUENCE

Checking the Sequence

Functions

The following parameters can be checked at the display menu

while the sequence is running, or when it has been suspended: > Pout = max. output power

> U_ > U > I_ = min. output current > I = max. output current > rcl = address of the current memory location > rrEP = number of repetitions yet to be executed > USEt = momentary output voltage > ISEt = momentary output current > tSEt = execution time for the current address

> SSEt = output level for SSEt switching function

= min. output voltage = max. output voltage

(tSEt or tdEF), no display of remaining time

Checking the Sequence with Manual Operation

☞

Press the <SELECT> key and browse through the display menu.

☞ Further information is included in chapter 4.8.

Checking the Sequence with Remote Querying

The status of the sequence can be queried by means of remote command (see page 70).

Possible responses to text: “RUN”, “HOLD”, “RDY”

RUN: active sequence HOLD: sequence suspended RDY: device in initial state

Numeric value for number of repetitions yet to be executed (rrep) Numeric value for current memory address (rcl)

Influencing Step-by-Step Control

Step-by-step control is used to test Uset, Iset and Sset setpoint values in a time-independent fashion before a sequence is run automatically. Step-by-step control is activated by executing the sequence START command, or by initial execution of the sequence STEP command.

Execute Next Address (status: HOLD HOLD)

Functions

! The next or the previous memory location can be selected at

any time from a suspended sequence – in the step-by-step control mode. The setpoints saved to the next or the previous memory location are executed. The selected dwell time of the exited and the new memory address is not taken into consideration.

• The output retains its switching status (output On or Off).

• When jumping from the stop address to the start address or back again, the remaining repetitions counter (rrep) remains unchanged.

Procedure:

☞ With suspended sequence,

– press the <ENTER> key (next address) or – the <> key (next address)

the <> key (previous address) or

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq step appears and execute the command (next address) with the

<ENTER>

key.

! The sequence executes the next or the previous address. ! If the sequence is in the HOLD status, the selected dwell time

is irrelevant.

! The LOCKED/SEQ LED blinks slowly in the HOLD status.

• Start automatic sequence run from the current memory location: see resuming the sequence from the HOLD status in the following chapter.

• Start automatic sequence run: see sequence restart in the following chapter.

Jump to the stop address: see ending the sequence at the stop

• address

End step-by-step control at the current address: see ending the

• sequence at the current address in the following chapter.

in the following chapter.

Influencing the Automatic Sequence Run

Stop Sequence Manually – End at Stop Address

(status: RUN RDY)

Executing the Start Address and Beginning Step-by-Step Control (status: HOLD HOLD, or RUN HOLD)

Functions

! The start address can be selected at any time

suspended or a running address are executed. The selected dwell time of the exited and the new memory address is not taken into consideration.

sequence

. The setpoints saved to the start

from a

! The device is switched from automatic sequence to step-by-

step control the first time this step is executed.

• The output is switched to the output on status.

Procedure:

☞ With interrupted or running sequence,

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq start appears, and execute the command with the <ENTER> key.

! The SEQUENCE executes the start address. ! If the sequence is in the HOLD status, the selected dwell time

is irrelevant.

! The LOCKED/SEQ LED blinks slowly in the HOLD status.

Functions

A SEQUENCE can be stopped (ready status) at any time while it

is running (run status), or when it has been suspended (hold status).

! The sequence jumps to the stop address when interrupted.

• If the memory location assigned to the stop address is empty, the Uset, Iset and Sset values from the last executed address are retained. If the memory location assigned to the stop address is not empty, Uset and Iset are changed to the corresponding values. Selected dwell time Tset of the of the last executed memory location is not taken into consideration.

! The output retains its switching status (output On or Off) if the

memory location assigned to the stop address is not empty. The output is switched to the off status if the memory location assigned to the stop address is empty.

Procedure:

☞

Press the <FUNCTION> key.

! SEq StoP blinks at the display. ☞ Press the <ENTER> key. ! The contents of the stop address are executed. The sequence

is ended.

36 GMC-I Messtechnik GmbH

Stop Sequence at Current Address

(status: RUN



HOLD)

End the Sequence at the Stop Address (status: HOLD RDY)

Functions

! A running SEQUENCE can be suspended for an indefinite period

of time.

• Uset, Iset and Sset retain the values specified in the current memory location. Selected dwell time Tset of the current memory location is not taken into consideration.

• The output retains its switching status (output On or Off).

•The SEQUENCE can be resumed (cont) at the next memory location, or ended at the current address <CE/LOCAL> or the stop address (stop), or restarted (go). In addition, step-by-step control can be started at the next

address (Step) or at the start address (Start) as well.

Procedure:

☞ With running SEQUENCE,

– press the <ENTER> key or – press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq hold appears and execute the command with the <ENTER> key.

! The command is executed when the key is released. ! The SEQUENCE stops at the current address. ! The LOCKED/SEQ LED blinks slowly in the HOLD status.

Functions

! A suspended SEQUENCE can be ended at any time by

executing the stop address.

• If the memory location assigned to the stop address is empty, the Uset, Iset and Sset values from the hold address are retained. If the memory location assigned to the stop address is not empty, Uset and Iset are changed to the corresponding values. Selected dwell time Tset of the of the current memory location is not taken into consideration.

• The output status is determined by the content of the stop address. The output retains its switching status (output On or Off) if the memory location assigned to the stop address is not empty. The output is switched to the off status if the memory location assigned to the stop address is empty.

Procedure:

☞ With suspended SEQUENCE,

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq stop appears and execute the command with the <ENTER> key.

! The SEQUENCE is ended and the output status is determined

by the content of the stop address.

! The LOCKED/SEQ LED does not blink in the RDY status.

End the Sequence at the Current Address (status: HOLD RDY)

Resuming the Sequence from the HOLD Status (status: HOLD RUN)

Functions

! A suspended SEQUENCE can be resumed at any time.

• The output retains its switching status (output On or Off). The selected dwell time of the of the exited memory location is not taken into consideration.

! The sequence is now resumed starting with the next address,

and the values stored to the respective memory location (Uset, Iset, tdef/tset and SSEt) are read out to the power and signal

outputs.

! In the case of very long dwell times, you can advance

prematurely to the next memory location by pressing the <ENTER> key twice (status: RUN HOLD RUN).

Procedure:

☞ With suspended SEQUENCE,

– press the <ENTER> key or – press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq cont appears and execute the command with the <ENTER> key.

! The command is executed when the key is released. ! The SEQUENCE is resumed starting with the next memory

location.

! The LOCKED/SEQ LED blinks rapidly in the run status.

Functions

! A suspended SEQUENCE can be ended at the current address

at any time.

• Uset, Iset and Sset retain the values specified in the current memory location. Selected dwell time Tset of the of the current memory location is not taken into consideration.

• The output retains its switching status (output On or Off).

Procedure:

☞ With suspended SEQUENCE,

– press the <CE/LOCAL> key.

! The SEQUENCE is ended and the output status is determined

by the content of the current address.

! The LOCKED/SEQ LED does not blink in the RDY status.

Restarting the SEQUENCE (status: HOLD RUN or RUN RUN)

Functions

! A suspended or running SEQUENCE can be restarted at any

time.

• The output is switched to the output on status.

! In this case, all memory locations are executed, one after the

other, from the start address to the stop address, and the respective values saved to each location (Uset, Iset, tdef/tset and SSEt) are read out to the power and signal outputs.

Procedure:

☞ With interrupted or running SEQUENCE,

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq go appears and execute the command with the <ENTER> key.

! The SEQUENCE is restarted.

GMC-I Messtechnik GmbH 37

ENTER

SEQUENCE

Sequence is resumed

Resume sequence

Restart sequence

End sequence

Select:

The setting is executed

in hold status

LOCKED/SEQ

in run status

LOCKED/SEQ

Step-by-step, start address

Step-by-step, next address

FUNCTION

CE/LOCAL

End at

current address

Executing the Start Address and Beginning Step-by-Step Control (status: HOLD HOLD or RUN HOLD)

Functions

! The start address can be selected at any time from a

suspended or a running SEQUENCE. The setpoints saved to the start address are executed. The selected dwell time of the exited and the new memory address is not taken into consideration.

! The device is switched from automatic sequence to step-by-

step control the first time this step is executed (see page 36).

• The output is switched to the output on status.

• The remaining repetitions counter is reset to the initial value (rrep = rep).

Procedure:

☞

With interrupted or running SEQUENCE,

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq start appears and execute the command with the <ENTER> key.

! The SEQUENCE executes the start address. ! The selected dwell time of the new and the exited memory

address is not taken into consideration.

! The LOCKED/SEQ LED blinks slowly in the HOLD status.

Figure 4.7.3 n Suspending and Resuming a Sequence

Executing the Next Address and Beginning Step-by-Step Control (status: HOLD HOLD)

Functions

! The next memory location can be selected at any time from a

suspended SEQUENCE. The setpoints saved to the next memory location are executed. The selected dwell time of the exited and the new memory address is not taken into consideration.

! The device is switched from automatic sequence to step-by-

step control the first time this step is executed (see page 36).

• The output retains its switching status (output On or Off).

• When jumping from the start address to the stop address, the remaining repetitions counter (rrep) remains unchanged.

Procedure:

☞ With suspended SEQUENCE,

– press the <FUNCTION> key and then browse with the

<> key, the <> or the <FUNCTION> key until SEq step appears and execute the command with the <ENTER> key.

! The SEQUENCE executes the next address. ! The selected dwell time of the new and the exited memory

address is not taken into consideration.

! The LOCKED/SEQ LED blinks slowly in the HOLD status.

Adding New Settings to an Existing SEQUENCE

See chapter 4.9.4, page 43.

Deleting an Individual SEQUENCE Memory Location

See chapter 4.9.5, page 44.

4.7.4 buS – The “Interface” Function Group

The KONSTANTER can be set up for data transmission to a computer in the interface configuration function group. In this case, all of the settings previously selected with DIP switches are entered via menu functions.

The serial port (RS 232) or the (optional) parallel port (IEEE 488) is used for communication.

Addr – Setting the Device Address

• An address must be assigned to the SSP KONSTANTER in order to assure that it functions correctly together with other devices on the IEC bus.

If the KONSTANTER receives its own address from the computer, it

• interprets subsequent data and executes the respective commands.

• If it receives the address of another device, all subsequent data are ignored until it receives its own address.

Settings

☞

Procedure for selecting Addr, and setting the desired parameter (see chapter 4.7):

☞ Press the <FUNCTION> key in order to access the FUNCTION

menu.

! The last edited function or function group is accessed

automatically.

☞ Select buS configuration if necessary by pressing the

<FUNCTION> key, or the <FUNCTION> key and simultaneously the <> key or the <> key.

! buS appears at the left-hand display.

☞ Acknowledge by pressing the <ENTER> key.

38 GMC-I Messtechnik GmbH

! The buS functions menu appears.

From the buS function group

Select the

device address

FUNCTION

Press repeatedly if necessary

CE/LOCAL FUNCTION

ENTER

CE/LOCAL

Select the text parameter from an options loop

From the buS function group

ENTER

CE/LOCAL FUNCTION

From the buS function group

ENTER

CE/LOCAL FUNCTION

Select the text parameter from an options loop

From the buS function group

ENTER

CE/LOCAL FUNCTION

☞ Select the Addr function by pressing the <FUNCTION> key, or

the <FUNCTION> and simultaneously the <> key or the <> key.

! Addr appears at the left-hand display, and the last selected

parameter appears at the right-hand display.

☞ Select an address for the SSP KONSTANTER with the <> or

the <> key.

Any address within a range of 0 to 31 may be selected.

! The selected address must be the same as the address

selected for the SSP KONSTANTER at the computer.

! Address 0 is usually assigned to the controller. ! Address 31 means unL (unlist). ☞ Acknowledge your selection with the <ENTER> key.

! The display is returned to the functions menu after

acknowledging with the <ENTER> key.

Settings

☞

Procedure for selecting bAud and setting the desired parameter (see chapter 4.7):

! bAud appears in the buS display along with the related

parameter (transmission speed).

dbit – Selecting the Number of Data Bits

• Either 7 or 8 data bits can be used.

• Settings at the SSP KONSTANTER and the controller must be identical.

Settings

☞

Procedure for selecting dbIt and setting the desired parameter (see chapter 4.7):

! dbIt appears in the buS display along with the related

parameter (number of data bits).

Figure 4.7.4 a Path to Device Address Selection

bAud – Setting Transmission Speed

• Specifies transmission speed in bits per second.

• The baud rate is an operating parameter of the serial interface.

• A low baud rate should be used in the case of large distances between communicating devices and in EMC-critical environments.

• Settings at the SSP KONSTANTER and the controller must be identical.

• The baud rate can be set to one of the following values: 50, 75, 150, 200, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600 or 19,200 bits per second.

Figure 4.7.4 c Path to Selection of the dbIt Text Parameter

Pbit – Setting the Parity Bit

• Parity or check bits are used to detect transmission errors.

• They are added to the character string so that the sum of H or L is even or odd as defined.

• The parity bit can be set to one of the following values:

none No parity bit ZEro Always 0 EVEn Even numbered odd Odd numbered nonE Always 1

! A parity bit should always be used in EMC-critical

environments.

! Settings at the SSP KONSTANTER and the controller must be

identical.

Settings

☞

Procedure for selecting Pbit (see also chapter 4.7):

! Pbit appears in the buS display along with the related

parameter (parity bit).

Figure 4.7.4 b Path to Selection of the bAud Text Parameter

GMC-I Messtechnik GmbH 39

Figure 4.7.4 d Path to Selection of the PbIt Text Parameter

SbIt – Selecting the Number of Stop Bits

From the buS function group

ENTER

CE/LOCAL FUNCTION

CE/LOCAL

Uout

Iout

FUNCTION

SELECT

SAVE

RCL

Uout/IoutUset/Iset

FUNCTION

SAVE

RCL

Abort

• Either 1 or 2 stop bits can be used.

! Settings at the SSP KONSTANTER and the controller must be

identical.

Settings

☞

Procedure for selecting Sbit and setting the desired parameter (see chapter 4.7):

! Sbit appears in the buS display along with the related

parameter (number of stop bits).

Figure 4.7.4 e Path to Selection of the SbIt Text Parameter

4.8 Settings with the <SELECT> Key

The <SELECT> key is located on the front panel next to the <FUNCTION> key. Depending upon settings in the FUNCTION menu, it makes 3 different functions available:

4.8.1 In the Basic Function

Switching the 7-segment display from Uout and Iout to the following measured values:

Pout xxx.x Max. output power U_ xx.xx Min. output voltage U

xx.xx Max. output voltage I_ x.xxx Min. output current I

x.xxx Max. output current

• When the <SELECT> key is pressed the first time, the last selected parameter name appears at the left-hand display, and the respective parameter values appears at the righthand display.

• When the <SELECT> key is pressed again, the next parameter name with value is displayed, and so forth.

• Display with the <SELECT> key is exited:

☞ By slightly turning rotary knob [5] or [8].

☞ By pressing the <CE/LOCAL>, <SAVE>, <RCL> or

<FUNCTION> key.

4.8.2 During a Sequence Run and with Step-by-Step Control

The LOCKED/SEQ LED blinks when the SEQUENCE function is active. The SELECT menu is expanded. It doesn’t matter whether the SEQUENCE function is in the RUN or the HOLD status.

Pout xxx.x Max. output power U_ xx.xx Min. output voltage U I_ x.xxx Min. output current I x.xxx Max. output current rcL xxx rrEP USEt xx.xx Programmed voltage value ISEt x.xxx Programmed current value tSEt xx.xx Programmed dwell time (tSEt or tdEF)

SSEt txt

Otherwise, the same functions can be executed as listed in chapter 4.8.1.

xx.xx Max. output voltage

Current address, memory location number

xxx

Number of remaining sequence repetitions

for current address, no remaining time Output level for SSEt switching function

Figure 4.8.1 Setting Basic Functions with the SELECT Key

4.8.3 Display of Stored Data Upon Execution of <RCL>

Display of Data Stored to Setup Memory (1 ... 10) Upon Execution of <RCL>

After executing the <RCL> command, selecting a memory location (<> or <> key) and pressing the <ENTER> key, the device is switched to the read-out mode. Values saved to setup memory blink at the display. The basic settings stored to the selected memory location can now be browsed by pressing the <SELECT> key:

Uset Iset Voltage and current setpoints tSEt Programmed dwell time SSEt Signal output status outP Output switching status after power on Ulim Voltage setting limit Ilim Current setting limit OVP OCP dLY UI_ Min-Max value recording tdEF Dwell time independent of memory location Strt Start address StoP Stop address rEP Number of repetitions

Overvoltage setpoint O

vercurrent protection

Overcurrent delay

40 GMC-I Messtechnik GmbH

Display of Data Stored to Sequence Memory (11 ... 255) Upon

Cursor position

SELECT

Setting resolution of the numeric parameter

CE/LOCAL

Basic Settings

FUNCTION RCL

Uout/Iout

Uset/Iset

FUNCTION

RCL

ENTER

SAVE

Execution of <RCL>

After executing the <RCL> command, selecting a memory location (<> or <> key) and pressing the <ENTER> key, the device is switched to the read-out mode. Values saved to sequence memory blink at the display. The settings stored to the selected memory location can now be browsed by pressing the <SELECT> key:

Uset Iset Voltage and current setpoints tSEt Programmed dwell time SSEt Signal output status

4.8.4 Setting Resolution with the <SELECT> Key

The numeric parameter can be set to varying degrees of accuracy. Set the cursor to the desired decimal place within the display to this end. The corresponding decimal place blinks in order to indicate the current cursor position.

Resolution can be set for the following parameters:

Uset, Iset, Ulim, Ilim, OVset, Delay, tset and tdef.

Settings

☞

Select the desired parameter.

! The parameter value blinks at the last selected decimal place.

☞ Press the <SELECT> key. The cursor (blinking decimal place) is

moved one place to the right.

☞ Repeatedly press the <SELECT> key until the cursor is

positioned at the desired decimal place.

☞ Set the parameter to the desired value with the <> key or the

<> key using the selected resolution.

Settings

☞

Select values for the desired parameters.

☞ Press the <SAVE> key. ! Sto appears at the left-hand display, and the last selected

memory location number appears at the right-hand display.

☞ Select the desired memory location (1 to 10) with the <> or

the <> key.

☞ Acknowledge by pressing the <ENTER> key.

☞ Exit the SAVE function by pressing the <CE/LOCAL> key.

☞ Switch to the respective function by pressing the <FUNCTION>

key, the <SELECT> key or the <RCL> key, or by slightly turning the current or voltage adjusting knob.

Figure 4.8.4 Setting Resolution with the SELECT Key

4.9 Storing Data with the <SAVE> Key

The <SAVE> key is located at the left-hand side of the front panel in the second row of keys underneath the <FUNCTION> key.

It makes the following functions available:

• Saving basic device settings

• Saving data to a Memory Location

• Deleting all data within a defined memory range from address 11 to 255

• Inserting additional data to a sequence

• Deleting an individual sequence memory

4.9.1 Saving Basic Device Settings

• Basic device settings can be saved to memory locations 1 through 10.

• These settings are saved to battery-backed memory. Settings for all of the following parameters can be saved to this memory:

USET/ISET OVSET TSET OCP TDEF SSET DELAY START OUTPUT MINMAX STOP ULIM REPETITION ILIM

Figure 4.9.1 Saving Device Settings

4.9.2 Saving Data to a Memory Location

Functions

• Sequence data can be saved to memory locations 11 through

255.

• These settings are saved to battery-backed memory.

• Uset, Iset, Tset and Sset values can be saved.

Settings (see also page 35)

☞ Select values for the desired parameters.

☞ Press the <SAVE> key.

! Sto appears at the left-hand display, and the last selected

memory location number appears at the right-hand display.

☞ Select the desired memory location (11 to 255) with the <>

or the <> key.

☞ Acknowledge by pressing the <ENTER> key.

GMC-I Messtechnik GmbH 41

4.9.3 Clearing the Contents of a Defined Memory Range

ENTER

SAVE

ENTER

Clear range from start to stop address

Abort

CE/LOCAL

FUNCTION RCL

Uout/Iout

Uset/Iset

FUNCTION

RCL

Example of clearing all content from start to stop address:

occupied

empty

start °1 sequence °1 stop °1

start °2 sequence °2 stop °2

S | t | o |

Operation "Clearing content of a memory range"

c | l | r |

The content of the memories between start

Functions

• All data are deleted from memory locations from the current start address to the current stop address.

Settings

☞

Press the <SAVE> key.

☞ Select memory location 0 (clr) with the <> key or the <> key.

☞ Press the <ENTER> key.

! clr dAtA and start stop blink alternately at the display in order to

identify the range to be deleted.

☞ Acknowledge by pressing the <ENTER> key. ! The range of memory locations from the start address to the

stop address is cleared.

! Deletion of data can be aborted at any time by pressing the

<CE/LOCAL> key.

Figure 4.9.3 Clearing all Content from the Start to the Stop Address

011

current start

S | t | r | t S | t | o | P

c | l | r | d | A | t | A

current stop

and stop address is empty!

255

42 GMC-I Messtechnik GmbH

4.9.4 Inserting a Memory Location

CE/LOCAL

FUNCTION RCL

Uout/Iout

Uset/Iset

FUNCTION

RCL

ENTER

SAVE

Start and stop address

Abort

All memory locations  address 103 are shifted up by 1.

Memory location 103 is empty and the content of the stop address is lost.

Example of inserting an empty memory location within a given memory range:

occupied

empty empty

start °1 sequence °1 stop °1

start °2 sequence °2 stop °2

current stop

S | t | o | Y | Y | Y | i

YYY

The start and stop addresses define the working range for the command described below. Memory locations which do not lie within this range are protected against access when the command is executed. Each time a memory location is inserted, the content of the previous stop address is lost.

Functions

• Starting with the target address, previously saved data are shifted to higher address numbers.

• Memory location content located at memory address N prior to insertion is shifted to memory address N+1.

• Data which were previously stored to the memory location with the stop address are lost.

• The target address has no content after initial insertion.

Attention: Currently selected start and stop addresses and start and stop addresses saved to setup memory are not corrected automatically!

Settings

☞

Select a start address and a stop address with the help of the sequence submenu.

☞ Press the <SAVE> key. ! Sto and the last selected address appear at the display.

☞ Select the desired target address with the <> or the <>

key.

☞ Simultaneously press the <SAVE> and <> keys. ! An i (for insert) appears in the right-hand display next to the

selected memory address number.

☞ Execute the insert command by pressing the <ENTER> key. ! An empty memory location is added at the selected memory

address.

! The address numbers of all memory locations above the

selected address are increased by 1.

Figure 4.9.4 Inserting a Memory Location Within a Given Range

011

YYY+1

-1

Sto

Insertion

current start

The previous content of the stop address is lost!

255

GMC-I Messtechnik GmbH 43

4.9.5 Deleting a Memory Location

CE/LOCAL

Start and stop address

FUNCTION RCL

Uout/Iout

Uset/Iset

FUNCTION

RCL

ENTER

SAVE

Content of memory location 103 (n) is overwritten by content from location 104 (n+1).

The stop address has no content.

Abort

Example of deleting an individual SEQUENCE memory location:

occupied

empty empty

start °1 sequence °1 stop °1

start °2 sequence °2 stop °2

current stop

YYY

S | t | o |

current stop

The start and stop addresses define the working range for the command described below. Memory locations which do not lie within this range are protected against access when the command is executed. Each time a memory location is deleted, an empty memory location is inserted at the stop address.

Functions

• Starting with the target address, previously saved data are shifted to lower address numbers.

• Memory location content located at memory address N prior to deletion is shifted to memory address N-1.

• Data which were previously stored to the memory location with the target address are lost.

• The stop address has no content after initial deletion.

Attention: Currently selected start and stop addresses and start and stop addresses saved to setup memory are not corrected automatically!

Settings

☞

Select a start address and a stop address with the help of the sequence submenu.

☞ Press the <SAVE> key. ! Sto and the last selected address appear at the display.

☞ Select the desired target address with the <> or the <>

key.

☞ Simultaneously press the <SAVE> and <> keys.

! A d (for delete) appears in the right-hand display next to the

selected memory location address number.

☞ Execute the delete command by pressing the <ENTER> key. ! The address numbers of all memory locations within the start

to stop address range above the selected address are decreased by 1.

Figure 4.9.5 Deleting an Individual SEQUENCE Memory Location

011

current start

Deletion

current start

-1

YYY+1

Sto

Y | Y | Y | d

-1

YYY

Sto

The new content of the stop address is empty!

255

44 GMC-I Messtechnik GmbH

4.9.6 Deleting the Contents of a Memory Location

CE/LOCAL

FUNCTION RCL

Uout/Iout

Uset/Iset

FUNCTION

RCL

ENTER

SAVE

Abort

Content of location 103 is deleted.

Example of deleting the content of an individual memory location:

occupied

empty

start °1 sequence °1 stop °1

start °2 sequence °2 stop °2

current stop

S | t | o |

Operation "Deleting the content of a

start an d stop address

Functions

• The contents of any desired individual memory location from address 11 through 255 can be deleted.

• This has no effect on other memory addresses.

Settings

☞

Press the <SAVE> key.

! Sto and the last selected address appear at the display.

☞ Select the desired address with the <> key or the <> key.

☞ Press the

<SAVE> and <CE/LOCAL> keys simultaneously.

! A c (for clear) appears in the right-hand display next to the

selected memory location address number.

☞ Execute the delete command by pressing the <ENTER> key.

Figure 4.9.6 Deleting the Contents of an Individual Memory Location

011

current start

4.10 Memory Recall with the <RCL> Key

• All device settings saved to memory with <SAVE> or STORE can be recalled with the <RCL> key (RECALL), e.g. in order to reconfigure the device. This memory is battery-backed.

• Empty memory locations are displayed as “----” “----”, and cannot be recalled. ERR 24 appears briefly at the display, and bit 5 is set in event register B.

• RCL can also be controlled via the analog interface (see page 28 and chapter 5.8).

4.10.1 Recall from SETUP Memory

Addresses 1 through 10: complete basic device settings USET OVset OCP START ISET Ulim DELAY STOP Tset Ilim MINMAX REPETITION Sset OUTPUT Tdef

GMC-I Messtechnik GmbH 45

-1

Sto

Independent of current

YYY

Y | Y | Y | c

memory"

The content of the selected memory is empty!

255

Settings

☞

Press the <RCL> key.

! rcl appears at the left-hand display, and the last selected

memory location number appears at the right-hand display.

☞ Select the desired address [1 ... 10] by pressing the <> key

or the <> key.

☞ Press the <ENTER> key. ! Iset and Uset settings saved to this address blink at the

display.

☞ Browse through this memory location with the <SELECT> key

in order to view the respective parameter settings (see chapter

4.8).

☞ All of the data saved to this memory location can now be

loaded as basic settings by once again pressing the <ENTER> key.

☞ Press the <CE/LOCAL> key to abort the RECALL function.

☞ Press the <RCL> key in order to return to the memory location

selection function.

☞ The RECALL function can be exited by pressing any other

function key, or by turning the adjusting knob.

4.10.2 Recall from SEQUENCE Memory

Addresses 11 to 255: Uset, Iset, tSEt and SSEt values for the

sequence function

! Data from memory locations 11 through 255 can be recalled

at any time during programming.

☞ Press the <RCL> key. ! rcl appears at the left-hand display, and the last selected

memory location number appears at the right-hand display.

☞ Select the desired address (11 ... 255) by pressing the <>

key or the <> key.

☞ Acknowledge your selection with the <ENTER> key. !

Iset and Uset settings saved to this address blink at the display.

☞ Browse through this memory location with the <SELECT> key

in order to view the respective parameter settings (see chapter

4.8).

☞ All of the data saved to this memory location can now be

loaded by once again pressing the <ENTER> key.

! If one of the recalled Uset or Iset values exceeds the currently

valid soft limit (Ulim and Ilim), execution of the command is aborted, Err 21 is displayed briefly and bit 5 is set in event register B.

! Only Uset, Iset and SSEt are executed: tset is loaded as a

current setting value but is not executed.

☞ Another memory location can be immediately accessed with

the <> key or the <> key while the previous function is being executed.

☞ Press the <CE/LOCAL> key to abort the RECALL function.

☞ Press the <RCL> key in order to return to the memory location

selection function.

☞ The RECALL function can be exited and another function

accessed by pressing any other function key, or by turning the adjusting knob.

4.11 Disabling Front Panel Controls

The front panel controls can be disabled against inadvertent changes to selected values and settings.

The behaviour during mains ON is also influenced by the selected power-on status Pon parameter (page 26).

Disabling

☞

Simultaneously press the <CE/LOCAL> and <SAVE> keys.

! The front panel controls are now disabled. ! The yellow LOCKED/SEQ LED lights up.

Enabling

☞

Press and hold the <CE/LOCAL> key for at least 4 seconds, or until the LOCKED/SEQ LED goes out.

Note: While key is pressed and sequence is in progress, „LLO“ is shown in the display.

Disabling and Enabling via the Analog Interface

☞

The <CE/LOCAL> key can also be disabled by applying a signal to the trigger input at the analog interface and selecting the appropriate setting for the T_MODE function, thus preventing manual reactivation of the front panel controls.

4.12 <The ENTER> Key

The <ENTER> key is used to execute various functions in combination with the respectively selected operating mode.

<ENTER> Key Functions

Pre-Selecting Setpoints (fixed value selection)

1) <ENTER>: Change display from Uout/Iout to Uset*/Iset.

2) <> or <>: Preselect Uset, Uset LED blinks.

3) <ENTER>: Activate Uset value.

4) <ENTER>: Change to Iset*.

5) <> or <>: Preselect Iset, Iset LED blinks.

6) <ENTER>: Activate Iset value. * The decimal place which can be adjusted with the <SELECT>

function blinks. See also page 21, “Pre-Selected Settings”.

Activating Parameter Values

Textual or numeric parameter values are activated with the <ENTER> key during device setup.

Executing Commands

<SAVE>: Save data to the selected address. <RCL>: Recall data saved to the selected address.

ENTER

the < are then executed after pressing the <

Sequence control: Execution of SEq xxxx commands Function group selection: Access parameter settings for the

selected function group

Sequence and Step-by-Step Control

A running sequence can be suspended by pressing the <

A suspended sequence can be resumed by pressing the <

The next memory location can be executed by pressing the <ENTER> key in the step-by-step control mode.

> key the first time, the selected data blink at the display, and

ENTER

> key once again.

Status change: RUN  HOLD

Status change: HOLD  RUN

After pressing

ENTER

> key.

ENTER

> key.

4.13 The <CE/LOCAL> Key

The <CE/LOCAL> key is used to execute a specific function in combination with the respectively selected operating mode.

Reset Device Settings

☞

<CE/LOCAL> key + <ENTER>: The KONSTANTER’s factory default settings are used.

Disable and Enable Front Panel Controls

See chapter 4.11.

Switch from REMOTE to LOCAL

See chapter 4.16.

Abort an Operation

Uset / Iset Entry

☞ <CE/LOCAL> key

Switch to display of measured Uout and Iout values.

<SELECT> Display

☞ <CE/LOCAL> key

Switch to display of measured Uout and Iout values.

<SAVE> / <RCL> Function

☞ <CE/LOCAL> key

Abort <SAVE> and <RCL> functions, switch to display of measured Uout and Iout values.

Function Group Selection

☞

Return to display of measured Uout and Iout values from function group selection.

46 GMC-I Messtechnik GmbH

Function Selection

☞

<CE/LOCAL> key: Abort function selection, return to function group selection.

Text Parameters

☞

<CE/LOCAL> key

Abort selection, switch to display of selected text parameter.

Sequence Control

☞ <CE/LOCAL> key

Abort a suspended sequence or step-by-step control at the current memory location.

4.14 INCR <> and DECR <> Keys

The increment and decrement keys execute various functions depending upon settings.



Parameter Selection

Text parameters

<>/<>: Display next or previous parameter. Acknowledge the respective text parameter with the

<ENTER> key. Abort with rotary knob, or with <CE/LOCAL>, <RCL>,

<SAVE> or <FUNCTION> key.

Numeric parameters

<>/<>: Increase / decrease the value of the parameter at the cursor position.

<RESOL> is used to move the cursor. The respective numeric parameter is activated automatically.

Exception:

Settings for Uset and Iset initialized with the <ENTER> key (setpoint settings) and selected with the <> or the <> key must also be acknowledged with the <ENTER> key.

Memory Location Selection



After Pressing <RCL> or <SAVE>: <>/<>: Select next or previous memory location.

Address by Address Preview of Stored Setpoints:

After pressing <RCL>: <>/<> 11 ... 255  <ENTER>: Blinking display of USET, ISET, TSET and SSET setpoints, can

be selected with <SELECT>, browse though addresses in the background with selected setpoint using <> or <>, the respective stored setpoint is displayed.

Browsing through Submenus



Function Menu

<FUNCTION> + <> or <>: Switch to next or previous function or function group.

Select Menu

<SELECT> + <>/<>: Select the next or the previous display function.

 Executing the Next or the Previous Memory Location

in Step-by-Step Control Mode

After executing SEQ Strt or SEQ StEP with a running or a suspended sequence, the next or the previous memory location can be executed with <> or <>.

4.15 Device RESET

Most device functions can be returned to a defined default value with the reset command, see page 63.

☞ Press and hold the <CE/LOCAL> key, and then press the

<ENTER> key.

4.16 Selecting Remote and Local Control Modes

After switching mains power on, the manual operating mode is always active (local state). All front panel controls are enabled and the device can be operated manually.

LOCAL —> REMOTE – Switching from manual to remote control

Switching to remote control occurs: At the IEC bus when the REN line is activated by the controller and the device is addressed as a listener.

At the serial interface as soon as data are transmitted to the device.

a) REMOTE  LOCAL

– Switching from remote to manual control

The device is returned to manual operation: Manually:

– By activating the <CE/LOCAL> key, as long as it has not

been disabled by the controller during IEC bus operation ( c)

Via the IEC bus:

– By transmitting the addressed GTL (GO TO LOCAL) interface

command to the device (selective switching to manual operation) Programming example (HP Basic): LOCAL 712 or

– If the REN line is deactivated by the controller (switches all

devices to manual operation) Programming example (HP Basic): LOCAL 7

LOCAL LOCKOUT – Disabling manual switching to manual operation

(only relevant for control via the IEC bus)

The IEC bus controller can disable the LOCAL key at the device with the LLO (LOCAL LOCKOUT) universal interface command, preventing manual switching to the manual operating mode (remote state with lock). Programming example (HP Basic): LOCAL LOCKOUT 7

Comments

The “REMOTE” LED indicates the momentary control mode:

LED on = remote control LED off = manual control

Switching back and forth between the two control modes does not cause any changes to current device settings or stored parameters.

Exception: If the display has been switched off it is reactivated when switching from REMOTE to LOCAL (DISPLAY OFF —> DISPLAY ON).

IEC bus control: The device is capable of receiving programming data in the manual operating mode, but they are not executed.

GMC-I Messtechnik GmbH 47

5 Analog Interface

SIG1 OUT

SIG2 OUT

TRG IN -

TRG IN +

+15 V

AGND

Uset -

Uset +

Iset +

U MON

I MON

 SENSE

 OUT

+ SENSE

OUT

ADJ

1.5 k





10 k



9k8

9k4

T

110 mA

+ OUT



-+-

120 k





+18 V

U-Reg.

I-Reg.

U-Reg.

I-Reg.

Ra = Rb = 60 k for 20 V types

30 k for 40 V types 15 k for 80 V types

ANALOG INTERFACE

OUTPUT

5 k

P Controlled

37.5 k for 32 V type

U-MON (output)

 Analog voltage output signal, proportional to output voltage

5.1 Connector Pin Assignments

SIG1 OUT, SIG2 OUT (output)

 Digital status signal outputs with reference to AGND  SIG1 OUT indicates the status defined by SIG1 txt.  SIG2 OUT indicates the status defined by SIG2 txt.

 Signal type Open collector  Max. switching voltage 30 V DC  Max. switching current 20 mA

☞ For a detailed description refer to chapter 5.3.

TRG IN+, TRG IN- (input)

Uout acquired by the sensing leads. (0 ... 10 V 0 ... Uout

nom

 The short-circuit proof output is referenced to AGND, has an

internal resistance of 9.8 k and is short-circuit proof.

☞ For a detailed description refer to chapter 5.6.

I-MON (output)

 Analog voltage output signal, proportional to output current

(0 to 10 V 0 ... Iout

 The short-circuit proof output is referenced to AGND, has an

internal resistance of 9.4 k and is short-circuit proof.

nom

☞ See detailed description in chapter 5.7.

 Floating, digital control input for controlling a device function

assigned with trG txt.

 Low signal: – 26 V  U  High signal: 4 V  U

= (Us – 2 V) / 1.5 k

1 V

26 V,

☞ For a detailed description refer to chapter 5.8.

+15 V (output)

 This auxiliary voltage output (15 to 17 V DC with reference to

AGND) can be used to control the trigger input, or to supply power to external components (e.g. reference element for generating control voltages).

 The output is equipped with electronic current limiting to

approximately 60 mA, and is short-circuit proof to AGND.

AGND (analog ground = reference point)

 Reference point for analogue control inputs and outputs.  This terminal is internally connected to the minus pole of the

Uset-, Uset+ (input)

 Analog (differential) voltage input with reference to AGND for

 Uout = USET + U

power output via an auto-reversible fuse with a rating of 110 mA.

controlling output voltage. The following applies when the output is activated:

Uout = Output voltage in constant voltage regulating mode

k

USET = Voltage setpoint selected in manual mode U

☞ For a detailed description refer to chapter 5.4.

Iset+ (input)

= External control voltage (0 to 5 V 0 ... Uout = Control coefficient = Uout = Input resistance (Uset +: 10 k) Uset–: 15 k

nom

/ 5 V

 Analog voltage input with reference to AGND for controlling

output current. The following applies when the output is activated:

 Iout = ISET + U

Iout = Output current in constant current regulating mode

k

ISET = Current setpoint selected in manual mode U

= External control voltage (0 to 5 V 0 ... Iout

= Control coefficient = Iout

= Input resistance: 10 k

nom

/ 5 V

nom

)

☞ For a detailed description refer to chapter 5.5.

48 GMC-I Messtechnik GmbH

Figure 5.1 Internal Wiring of Analog Interface and Output

(simplified representation)

5.2 Auto-Sensing Mode

SSP KONSTANTER

Settings USET = Uset ISET = Iset

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset 

Uset +

Iset +

U-MON

I-MON

+ OUT

Uout

Load

Iout

Output

OUTPUT ON

+5 V

Usig

Figure 5.3 Wiring Examples for Status Signal Outputs

In order to be able to take advantage of highly constant output voltage at the power consumer even if long leads are used, sensing leads can be used to compensate for voltage drops within the output leads.

Functions

 Sensing lead terminals +SENSE and –SENSE  Acquirement of output voltage, which decisively influences the

voltage measuring and control circuits, directly at the power consumer (instead of at the output terminals).

 Sensing mode operation (remote sensing) offers the following

advantages:

- In the constant voltage regulating mode, current related voltage drops occurring in the output leads have practically no effect on voltage supplied to the power consumer.

- Voltage at the output terminals is automatically increased to

compensate for voltage drops.

- In the constant current regulating mode, voltage limiting at the consumer is independent of output current.

- The voltage value read out by the measuring function indicates voltage acquired at the sensing leads. Load parameters such as power consumption and load resistance can thus be determined more accurately.

 The parameters and limit values included in figure in figure 5.2

and in the section entitled Electrical Data apply for operation with the sensing leads.

 Incorrect connection of the sensing leads does not damage the

KONSTANTER, although it results in the following reversible events:

- Polarity reversal at sensing leads or interrupted output lead

If output voltage is not being limited at the KONSTANTER by means of current regulation, it climbs to well above the selected value. This condition immediately triggers overvoltage protection and deactivates the output.

- Interruption of a sensing lead

Automatic reset to local sensing for the respective output pole.

 If the sensing leads have been connected incorrectly,

increasing voltage between the output terminals is not acquired by the measuring function.

Activation

 The remote sensing mode function is activated automatically

after the SENSE terminals have been connected to the power

consumer at the respective output poles.

 The function is deactivated by once again interrupting this

connection.

5.3 Status Signal Outputs

Functions

 The KONSTANTER is equipped with two open collector

outputs with reference to AGND for reading out status signals, namely SIG1OUT and SIG2OUT.

 The device status or event to be signaled is independent for

both signal outputs. Selection is made by setting the SIG1 and SIG2 functions. A detailed description is included on page 29 for manual

operation, and on page 71 for programming.

 As a status signal for monitoring devices  For controlling external output relays

Applications

 Triggering of certain device functions can be synchronized by

means of connection to the trigger inputs of other

Figure 5.2 Connecting the Power Consumer for

Sensing Mode Operation

Cs+, Cs-10 F ... 220 F

s+,Us-

1 V Us+ / 81   Us- / 81 

Connection

 The +SENSE and –SENSE sensing leads from the output

connector plug at the rear panel should be connected as close as possible to the power consumer.

 Connect each respective sensing lead to the appropriate output

pole (+SENSE: +, –SENSE: –).

 Interference can be minimized by:

- Twis ti ng the sensing leads and/or

- Shielding the sensing leads (connect shield to ground, the

housing or the negative output pole)

 Long output and sensing lead impedances may result in control

fluctuations at the output. This problem is of course worsened by capacitive consumers.

 Control fluctuations can be counteracted with one capacitor

GMC-I Messtechnik GmbH 49

each (C

, Cs-) between the SENSE and output terminals (see

Figure 5.2). If the output leads are twisted, their impedance can be reduced

as well.

KONSTANTERs (see also chapter 5.9.2).

Connection

 Values for connection:

Max. switching voltage: 30 V DC Max. switching current: 20 mA

 If you want to use the signal outputs to send status signals to

external monitoring devices, pull-up resistors must be used in order to generate appropriate levels.

The status signal outputs can be connected to the +15 V terminal with pull-up resistors (at least 1 k), in order to generate an active high signal of +15 V.

5.4 Regulating Output Voltage

Attention!

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = 0 ISET = Iset

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = 0 ISET = Iset

OUTPUT on/off

Load

Uout

Iout

Uout

Load

Iout

Isu

REF 02

OUT +5V

Usu

SSP KONSTANTER

USET+

USET–

AGND

ISET+

AGND

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V AGND

Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET = 0

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET = 0 OUTPUT on/off

Uout

Load

Uout

Iout

Usi

REF 02

OUT

+5V

Load

Iout

SSP KONSTANTER

5.5 Regulating Output Current

Functions

 Output voltage Uout can be set by means of an external control

voltage U

via control inputs Uset+ (non-inverting) and Uset

(inverting).

 The following applies in the constant voltage regulating mode:

Uout = USET + Usu  k

USET = selected voltage setpoint k

= voltage control coefficient = Uout

Max. adjusting error:  0.05% v. U

2% of the setting value

nom

/ 5 V

 The voltage control input functions as a differential voltage

input: Uset+ = non-inverting input:

= 0 ... + 5 V for Uout = 0 V ... Uout

nom

input resistance: 10 k

Uset = inverting input:

Usu = 0 ... 5 V for Uout = 0 V ... Uout

nom

input resistance: 15 k

Notes:

 The control inputs are not floating inputs: Their reference point,

AGND, is connected to the negative pole of the power output.

 Connecting grounded circuits to the control input may result in

erroneous settings due to leakage current or ground loops.

 If the reference point of control voltage U

negative output pole at the load side, the inverting input must be connected to this point (connection b in Figure 5.4).

Influences resulting form voltage drops in the output lead are thus avoided.

 If control voltage is isolated from the output, connect Uset to

AGND (connection a in Figure 5.4).

 If remote adjustment of output voltage is to be accomplished by

means of a potentiometer, wiring can be laid out as shown in Figure 5.4.

 U

can be applied as an alternating voltage, for example in order

to superimpose the selected direct voltage USET with interference signals.

The cut-off frequency of the modulated output voltage depends upon voltage amplitude.

To a great extent, cut-off frequency remains independent of the magnitude of the load and selected current limiting thanks to a special circuit design.

is connected to the

Functions

 Output current Iout can be set with an external voltage Usi via

the control input Iset+.

 The following applies in the constant current regulating mode:

Iout = ISET + U

 k

ISET = selected current setpoint k

= current control coefficient= Iout

Max. adjusting error: 0.1% of I

2% of setting value

nom

/ 5 V

 Current control input

Iset + = non-inverting input:

= 0 ... + 5 V for Iout = 0 A ... Iout

nom

 Input resistance is 10 k.

Notes:

 The control input is not a floating input: Its reference point, AGND,

is connected to the negative pole of the power output.

 Connecting grounded circuits to the control input may result in

erroneous settings due to leakage current or ground loops.

 Control voltage U

pole at the load side. (Figure 5.5)

 If remote adjustment of output current is to be accomplished by

means of a potentiometer, wiring can be laid out as shown in Figure 5.5.

 Usi can be applied as an alternating voltage, for example in order

to superimpose the selected direct current ISET with interference signals.

The cut-off frequency of the modulated output current depends upon the voltage amplitude which results from load.

Control inputs Uset+, Uset– and Iset+ should only be connected with shielded cable. Connect the shield to the AGND reference point.

may not be connected to the negative output

Connection

Figure 5.4 Wiring for Controlling Output Voltage with External

50 GMC-I Messtechnik GmbH

Voltage / External Potentiometer

Connection

Figure 5.5 Wiring for Controlling Output Current with External Voltage /

External Potentiometer

5.6 Voltage Monitoring Output

load

+ 9.8 k

, load coefficient

+ SENSE

+ OUT

-OUT

-SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN 

TRG IN +

+15 V AGND Uset -

Uset +

Iset +

U-MON

I-MON

Uout

Load

Iout

Settings USET = Uset ISET = Iset

OUTPUT on/off

-OUT

+ OUT

OUTPUT

load

SSP KONSTANTER

load

Ri + 9.4 k

, load coefficient

+ SENSE

+ OUT

-OUT

-SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN +

+15 V AGND Uset -

Uset +

Iset + U-MON I-MON

Settings USET = Uset ISET = Iset

OUTPUT on/off

-OUT

+ OUT

Uout

Load

Iout

load

OUTPUT

SSP KONSTANTER

5.7 Current Monitoring Output

Functions

 The U-MON terminal reads out a voltage UMU with reference to

AGND, which is proportional to output voltage Uout.

 U-MON serves as a control voltage for master-slave series

connection (see chapter 5.10.2).

However, U-MON can also be used for external measuring,

monitoring and recording.

 The following applies:

= Uout  kMU  k

kMU = 10 V / Uout R

i (U-MONITOR)

= load resistance

load

Max. error for U

= 0 ... 10 V

, U-Monitor coefficient

nom

= 9.8 kU-Monitor internal resistance

: 5 mV 1% of actual value (where R

load

10 M)

Notes:

 U-MON is not a floating output: Its reference point, AGND, is

connected to the negative output pole.

 Connecting grounded measuring circuits to the monitor output

may result in erroneous measurements due to leakage current or ground loops.

 The voltage monitoring output makes reference to output

voltage acquired at the sensing leads (see chapter 5.2).

 The monitor output is short-circuit proof.

Internal resistance is 9.8 k.

Connection

Functions

 The I-MON terminal reads out a voltage UMI with reference to

AGND, which is proportional to output current Iout.

 I-MON serves as a control voltage for master-slave parallel

connection (see chapter 5.9.2).

 However, I-MON can also be used for external measuring,

monitoring and recording.

 The following applies:

= Iout  kMI  k

= 10 V / Iout

i (I-MONITOR)

= load resistance

load

Max. error for U

10 M)

: 5 mV 1% of actual value (where R

= 0 ... 10 V

load

, I-Monitor coefficient

nom

= 9.4 kI-Monitor internal resistance

Notes:

 I-MON is not a floating output: Its reference point, AGND, is

connected to the negative output pole.

 Connecting grounded measuring circuits to the monitor output

may result in erroneous measurements due to leakage current or ground loops.

 The monitor output is short-circuit proof.

Internal resistance is 9.4 k.

Connection

load

Figure 5.7 Current Monitor Wiring

Figure 5.6 Voltage Monitor Wiring

GMC-I Messtechnik GmbH 51

5.8 Trigger Input

Warning!

Attention!

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V AGND

Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

SSP KONSTANTER

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET = Iset T_MODE OFF

Settings USET = Uset ISET = Iset

T_MODE OFF

Uout

Load

Uout

Iout

Load

Iout

Is approx. 10 mA

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET1+2+3 = Iset

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET1+2+3 = Iset OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Output

Settings USET = Uset ISET1+2+3 = Iset

OUTPUT on/off

Load

= Only required for sensing mode operation

SSP KONSTANTER

5.9 Parallel Connection

Functions

 The TRG IN floating optocoupler input allows for remote control of a

device function using a binary signal.

 The function to be controlled is selected with the T-MODE

setting (in the trG display).

☞ A detailed description is included on page 28 and page 74.

Connection

 Connect the control signal between TRG IN+ and TRG IN-. Refer

to the table below for the respective signal level.

Output Signal U

OFF High 4 ... 26 V DC (Us  2 V) / 1.5 k

ON Low 0 ... 1 V DC 0 mA

 The TRIGGER input can be driven with the +15 V output at the

analog interface via any desired switch (Figure 5.8).

The TRG IN trigger input is a floating input and is functionally isolated from the output current circuit. This functional isolation is not equivalent to “safety separation” as specified in electrical safety regulations.

Note

 The trigger input is scanned roughly every 10 ms by the digital

control unit. After a signal change has been detected, repeated querying ensues at short time intervals (suppression of switch bouncing and interference pulses). This means that:

– Trigger signal pulses must have a minimum duration of

14 ms in order to assure reliable recognition.

– A delay of 1 to 15 ms may occur between application of the

control signal and triggering of the controlled function.

If output current from a single KONSTANTER is insufficient for the respective application, the outputs of any number of KONSTANTERs can be parallel connected.

If outputs with different nominal voltages are parallel connected, all outputs must be limited to the lowest utilized nominal voltage value. The ULIM parameter is used to select this setting.

5.9.1 Direct Parallel Connection

Functions

 Easiest way to provide the power consumer with more current

than is available from a single KONSTANTER

 KONSTANTERs with differing nominal output voltages can be

used. However, all voltage setpoints must be set or limited to the same value.

 Less suitable for constant voltage regulating mode

Connection

Figure 5.9.1 a Wiring for Direct Parallel Connection

Settings

 Deactivate all outputs.  Adjust voltage setpoint USET of all parallel connected

KONSTANTERs to approximately the same value: Uset = USET1 = USET2 = USET3 = USETn

 Adjust current setpoints ISET such that they add up to the desired

cumulative current value Iset:

Iset = ISET1 + ISET2 + ISET3 + ... + ISETn

 Activate the outputs.

Figure 5.8 Controlling the Trigger Input with a Switching Element /

External Signal

52 GMC-I Messtechnik GmbH

Functional Principle

 After switching the outputs on, load current is initially supplied

by the KONSTANTER with the highest voltage setting.

 If load resistance is continuously reduced, load current is

continuously increased.

 When load current reaches the ISET value selected for the output

which is momentarily supplying power to the consumer, current limiting is activated for this output.

 If load resistance is further decreased, current regulation reduces

output voltage until the voltage value of the output with the next lowest setting is reached.

 As of this point in time, this KONSTANTER also supplies a

portion of the load current.

 This procedure is continued until load current triggers current

Ideal working

current

Ideal working range for voltage regulation at the load

out1

out2

out3

out1

out2

out3

/ V

/ A

range for

regulation at the load

regulating at the output with the lowest voltage setting when the setpoint value for cumulative current is reached.

 This output maintains constant load current until the load

resistor is short-circuited.

Figure 5.9.1 b U/I Diagram for Direct Parallel Connection

Notes:

 Slightly varying voltages occur at the individual outputs as a

result of setting tolerances. In the event of larger voltage differences, an electronic sink is

activated at the outputs with lower voltage settings. The sink attempts – in some cases in pulse mode – to reach the

lower voltage value. Neither the KONSTANTERs nor the power consumer are

damaged as a result. If problems occur with measurement of load current, the

KONSTANTERs should be linked by means of master-slave parallel connection (see also chapter 5.9.2).

 The outputs can be activated and deactivated commonly by

connecting the SIG1 outputs to the TRG inputs (see also chapter

5.9.2).

GMC-I Messtechnik GmbH 53

5.9.2 Master-Slave Parallel Connection

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Master

Settings USET = Uset ISET = Iset / n OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Slave 1

Settings USET > Uset

master

ISET = 0 A OUTPUT on

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Load

= only required for sensing mode operation

1 k

Slave 2

Settings USET > Uset

master

ISET = 0 A OUTPUT on

1 k

Output

sym

trG out

SIG1 out

trG out SIG1 out

SSP KONSTANTER

Functions

As opposed to direct parallel connection, master-slave parallel connection offers significant advantages:

 Equally suitable for voltage and current regulation  Output parameters (output voltage, cumulative current limiting,

output on/off) are set entirely by the master device.

 All interconnected KONSTANTERs are equally loaded.

Connection

 Define one power supply as a master device.  Connect master and slave devices as shown in Figure 5.9.2.  Connect the output leads (refer to chapter 2.1.5).  Balance the individual output current values. Keep connector

cable as short as possible, and use the largest possible conductor cross-section. Perform balancing with RR

sym

 Check output current at the slave device displays.  Output current at each of the slaves can be precisely matched to

master output current by adjusting R

. Changes appear

sym

immediately at the respective display.

 Undo short-circuiting of the load.  From this point on, setting and regulation of (cumulative) output

parameters are controlled entirely by the master device.

Power-up after initial settings:  Devices can be switched on and off in any desired order.

Functional Principle

 The master controls output current of the downstream device

(slave 1) via the slave’s current control input with the help of the current monitoring signal.

 Slave 1 functions as a master device for the next downstream

slave (slave 2), and so forth. Cumulative output current is thus always proportional to

master output current. The master controls the output on / off status of the slave

devices via the connection from the master SIG1 output (SIG1 out

setting) to the Slave TRG input (trG out setting).

Notes:

KONSTANTERs with Differing Nominal Values

 The KONSTANTER with the smallest nominal voltage value must

always be used as the master device.

 The voltage setting range of the other KONSTANTERs must be

limited to this lowest value with the ULIM parameter.

 Slave output current Iout corresponds to master output current

Iout as a percentage only, relative to I

Example:

Master: SSP 120-20 U

nom

Settings: USET :12 V ISET : 3 A (30%)

Slave 1: SSP 120-20 U

Figure 5.9.2 Wiring for Master-Slave Parallel Connection

Results in Uout :12 V Iout : 3 A (30%)

Slave 2: SSP 120-40 U

Settings

Initial power-up:

 Short circuit the load.  Switch the master on (mains) and configure settings:

SIG1 out

Pon rcl OUTPUT off USET = Uset Desired output voltage ISET = Isoll / n Iset: Desired cumulative current

n: Number of devices Only valid if nominal data are identical for all devices, see notes.

 Switch slave 1 on (mains) and configure:

trG out

SIG1 out

Pon rcl

USET > USET

ISET = 0 A The ISET rotary knob can be deactivated if

 Use the same procedure for additional slave devices.  Press the OUTPUT ON key at the master. All slave outputs are

switched on simultaneously and configured.

54 GMC-I Messtechnik GmbH

The voltage setpoint at the slave devices

master

must be set at least 1% higher than at the master device, e.g. to maximum.

desired by setting ILIM to 0 A.

General  A wire connection can be used instead of R

setpoint value is required for cumulative output current. In this

case, each slave device supplies slightly more current than the master device.

 If analog interface connector cables and the sensing leads are

longer than 1 meter, shielded cable should be used. The shield is connected to the ground terminal on the housing or

to OUT.

 The master device’s measuring function acquires commonly

generated output voltage for all interconnected KONSTANTERs, but only acquires its own output current.

The individual measured current values for each of the interconnected KONSTANTERs must be added together in order to arrive at cumulative output current.

Results in Uout :12 V Iout : 1.8 A (30%)

nom

20 V I

40 V I

sym

10 A

nom

10 A

nom

6 A

nom

if no precise

5.10 Series Connection

Warning!

Attention!

Settings USET1+2+3 = Uset ISET = Iset

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN + TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Load

= Only required for sensing mode operation

Settings USET1+2+3 = Uset ISET = Iset

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN + TRG IN 

+15 V AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Settings USET1+2+3 = Uset ISET = Iset

OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN + TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Settings USET1+2+3 = Uset ISET = Iset

OUTPUT on/off

Settings USET1+2+3 = Uset ISET = Iset

OUTPUT on/off

Output

SSP KONSTANTER SSP KONSTANTER

SSP KONSTANTER

Ideal working range for current regulation at the load

Ideal working range for voltage regulation at the load

out1

out2

out3

out1Iout2

out3

If output voltage from a single KONSTANTER is insufficient, or if you want to generate a voltage, the outputs of several KONSTANTERs can be connected in series.

Maximum allowable cumulative voltage for series connection is 120 V (or 240 V with grounded neutral point).

5.10.1 Direct Series Connection

If outputs with differing nominal values are series connected, the highest selected current value is present at all outputs in the event of short-circuit. However, the internal reverse-voltage protection diode is only rated for nominal current of the respective device (see reverse voltage withstand under Technical Data). For this reason, all current setpoints must be set to the lowest nominal current value of all interconnected devices. The ILIM parameter is used to select this setting. You can also connect a diode (D reverse direction between the terminals of the outputs with low nominal values. The diode must be capable of conducting nominal current from the output with the highest current value.

, Figure 5.10.1 a) in

Functional Principle

 The sum of all individual output voltages is made available to the

power consumer.

 If load resistance is continuously reduced, all of the outputs

deliver the same load current at first.

 When load current reaches the lowest selected current setpoint

value, current regulating is triggered at the respective output.

 If load resistance is further reduced, this output maintains

constant load current until its output voltage has dropped to 0 V.

 If even further reduction of load current occurs, the affected

output is forced by the other outputs to generate a negative voltage.

 As of approximately 0.5 V, the internal reverse-voltage protection

diode becomes conductive.

 Load current can once again climb, until current regulation is

activated at the output with the next highest current setpoint value.

 This procedure is continued until load current triggers current

regulating at the output with the highest current setpoint value.

 Current is held constant by this last output until short-circuiting

occurs.

Functions

 Easiest way to supply the power consumer with more voltage

than is available from a single KONSTANTER

 Easy wiring  Less suitable for constant current regulating mode

Connection

Figure 5.10.1 a Wiring for Direct Series Connection

Settings

 Deactivate all outputs.  Adjust current setpoint ISET of all series connected

KONSTANTERs to approximately the same value: Iset = ISET1 = ISET2 = ISET3 = ISETn

 Adjust voltage setpoints USET such that they add up to the

desired cumulative voltage value Uset: Uset = USET1 + USET2 + USET3 + ... + USETn

 Activate the outputs.

GMC-I Messtechnik GmbH 55

Figure 5.10.1 b U/I Diagram for Direct Series Connection

Note

 The outputs can be activated and deactivated commonly by

connecting the SIG1 outputs to the TRG inputs (see also chapter

5.10.2).

5.10.2 Master-Slave Series Connection

SSP KONSTANTER

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Master

Settings USET = Uset / n ISET = Iset OUTPUT on/off

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

Slave 2

Settings USET = 0 V ISET > Iset master OUTPUT on

Load

sym

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT

SIG2 OUT

TRG IN  TRG IN 

+15 V AGND Uset 

Uset +

Iset +

U-MON

I-MON

+ OUT

Slave 1

Settings USET = 0 V ISET > Iset master OUTPUT on

Output

= Only required for sensing mode operation

trG out

SIG1 out

trG out SIG1 out

Functions

As opposed to direct series connection, master-slave series connection offers significant advantages:

 Equally suitable for voltage and current regulation  Output parameters (cumulative output voltage, current limiting,

output on/off) are set entirely by the master device.

 All interconnected KONSTANTERs are equally loaded.

Connection

 Define one power supply as a master device.  Connect master and slave devices as shown in Figure 5.10.2.  Connect the output leads to the series circuit phase terminals.  Balance the individual output voltage values with R  Balancing can be simplified and optimized by combining a fixed

resistor (metallic layer,

50 ppm / K) and a trimming resistor for R

Slave,

Nominal Voltage

sym

Nominal Value

20 V 40 k/ 0.2 W 36 k + 10 k pot 40 V 80 k/ 0.2 W 75 k + 10 k pot 80 V 160 k/ 0.2 W 150 k +20 k pot

sym

Combination

 Switch slave 1 on and configure:

trG out

SIG1 out

Pon rcl USET = 0 V The USET rotary knob can be deactivated if

desired by setting ULIM to 0 V.

ISET > ISET

The current setpoint at the slave devices must

master

be set at least 1% higher than at the master device, e.g. to maximum.

 Use the same procedure for additional slave devices.  Press the OUTPUT ON key at the master. All slave outputs are

switched on simultaneously and configured.

 Check output voltage at the KONSTANTER displays. 

Output voltage at each of the slaves

output voltage by adjusting

can be precisely

. Changes appear immediately at the

sym

matched

to master

respective display.

 Connect the load.  From this point on, setting and regulation of (cumulative) output

parameters are controlled entirely by the master device.

Power-up after initial settings:  Devices can be switched on and off in any desired order.

Functional Principle

 The master controls output voltage of the downstream

KONSTANTER (slave 1) via the slave’s voltage control input with the help of the voltage monitoring signal.

 Slave 1 functions as a master device for the next downstream

slave (slave 2), and so forth. Cumulative output voltage is thus always proportional to

master output voltage. The master controls the

connection

input (

from the

trG out setting

output on/off status

of the slave devices via the

master SIG1 output (SIG1 out setting

) to the

Slave TRG

Notes:

KONSTANTERs with Differing Nominal Values

 The KONSTANTER with the smallest nominal current value must

always be used as the master device.

 The current setting range of the other KONSTANTER must be

limited to this lowest value with the ILIM parameter.

 Slave output voltage Uout corresponds to master output

current Uout as a percentage only, relative to U

Figure 5.10.2 Wiring for Master-Slave Series Connection

Settings

Initial power-up:

 Do not load the outputs (idle).  Switch the master on (mains) and configure settings:

SIG1 out Pon rcl OUTPUT off USET = Uset / n Uset: Cumulative output voltage

ISET = Iset Current limit value

56 GMC-I Messtechnik GmbH

n: Number of devices Only valid if nominal data are identical for all

devices, see notes

Example:

Master: SSP 120-40 U

40 V I

nom

Settings: USET : 12 V (30%) ISET :3 A

Slave 1: SSP 120-20 U

20 V I

nom

Results in Uout :6 V(30%)Iout :3 A

Slave 2: SSP 120-40 U

40 V I

nom

Results in Uout :6 V(30%)Iout :3 A

General

 If analog interface connector cables and the sensing leads are

longer than 1 meter, shielded cable should be used. The shield is connected to the ground terminal on the housing or

to OUT.

 The same current value is available from all KONSTANTERs.

For this reason, current measured at the master device is sufficient for the measurement of load current.

The individual measured voltage values for each of the interconnected KONSTANTERs must be added together in order to arrive at cumulative output voltage.

nom

6 A

10 A

6 A

5.11 Varying the Internal Output Resistance Value

nom

U/V

I / A

ISET

USET













ext

30 k  U

nom

Ri  I

nom

 24.4 k

SSP KONSTANTER

+ SENSE

OUT

SENSE

Analog Interface

SIG1 OUT SIG2 OUT

TRG IN  TRG IN 

+15 V

AGND Uset  Uset +

Iset +

U-MON

I-MON

+ OUT

ext

Output

Settings USET = Uset ISET = Iset Output on / off

load

imax

ext

-4

-3

-2

-1

imax

= 1.23 

nom

imax

24.4 k

ext

+24.4 k

;

Functions

 In the voltage regulating mode, internal output resistance has a

value of close to 0 .

 The internal output resistance value can be increased for

certain applications, for example simulation of long output cables or weak automotive batteries.

The selected (open-circuit) output voltage is reduced in proportion to increasing load (Figure 5.11 a).

Connection

 Connect the analog interface as shown in Figure 5.11 b.  The following relationship between internal resistance R

control resistance R

Example: U

nom

applies with this wiring configuration:

ext

= 40 V, I

= 6 A, Ri is 0.5 

nom

and

Figure 5.11 a Dependence of Output Voltage

on Load

Standardization

 The standard characteristic curve shown in Figure 5.11 c is

valid for all KONSTANTER models.

 Quick and easy determination indicating which output

resistance Ri correlates to any given control resistance R made possible with the curve.

Ri = R

 display value

imax

ext

===> R

= 376 k

ext

Figure 5.11 b Wiring for Varying Internal Resistance

 Ta b l e o f R

Values for All KONSTANTER Models

imax

Device Type 120-20 120-40 120-80

/  2.46 8.2 32.8

imax

Device Type 240-20 240-40 240-80

/  1.23 4.1 16.4

imax

Figure 5.11 c Standardized Curve for Determining Internal Output Resistance for a Specified Control Resistance

GMC-I Messtechnik GmbH 57

6 Operating Commands

 Nearly all of the device functions offered by the SSP KONSTANTER

can be remote controlled via the IEEE 488 interface (= IEC 625), or the RS 232C interface.

 Device settings and device responses are triggered by character

strings, which are transmitted in ASCII code.

The only exceptions to this rule are several IEC bus-specific functions.

 Transmission of device messages is accomplished as follows:

– Byte-serial via the IEC bus with the help of a special 3-wire

handshake

– Bit-serial via the RS 232C interface in consideration of selected

operating parameters

 Detailed information regarding the respective data transmission

operating modes can be found in the applicable standards, or in the interface description included with your controller.

 The layout of device messages complies in general with “Code,

Format, Protocol and General Command Accords” in accordance with IEEE 488.2 and IEC 625-2.

 Standard commands for programmable instruments (SCPI)

used by some manufacturers do not apply to the KONSTANTER.

6.1 Syntax

 The commands are named according to the English

designations for the corresponding functions.

 For example, the command:

USET 12

is used to set the output to a voltage value of 12 V.

 Each command consists of a header, and one or more

parameters as required.

 Differentiation is made between numeric parameters and text

parameters.

 Headers and text parameters can be entered either as upper case

or lower case letters, or as a combination of both.

 At least one blank must be entered between the header and the

parameter.

 If several parameters are included they are separated by

commas (,), and a blank can be entered before and after each parameter as well.

Examples:

OUTPUT ON

Output on

START_STOP 20,110

Abbreviated Commands

 Commands can be abbreviated.  The greatest possible extent of abbreviation is highlighted for each

command throughout all of chapter 6.

 The portion of the header which is not highlighted can be

omitted.

 Make sure to include question marks (?) in query commands,

even where abbreviations are used.

Example 1:

The following abbreviations can be used for the OUTPUT setting command:

OUTPUT / OUTPU / OUTP / OUT / OU

Example 2:

The following abbreviations can be used for the DELAY? query command:

DELAY? / DELA?/ DEL?/ DE?

Query Commands

 Result in querying of a device setting or measured values.  Query commands always end with a question mark (?).  The device transmits a response to the control computer.  If the IEEE 488 interface is used, the status byte can be queried

or serial polling can be initialized in order to determine whether or not a device message is available.

 If this is the case, bit 4 is set in the status byte register (MAV:

message available).

Example:

USET?

is used to query the voltage setpoint.

Text Parameters

 Text parameters generally begin with a letter.  Selection can be made from a group of texts for all commands

which use text parameters.

Example:

Command: DISPLAY txt Range: OFF

 In the example above, DISPLAY is the header, and ON and OFF

are the group of allowable text parameters.

Numeric Parameters

 Numeric parameters can be entered as whole numbers, or as

fixed or floating decimal point numbers with or without exponent.

 The exponent may occupy up to two places.  The entire parameter may not exceed a length of 30 places.  An upper or a lower case letter can be used for the exponent

symbol “E”.

 A blank can be entered to the left and to the right of the

exponent symbol.

 Leading plus signs can be omitted.  If several parameters are included they are separated by

commas.

 Blanks can be entered to the left and to the right of parameters.

Example: 12.5 (twelve + decimal fraction)

12.5 0012.5

1.25E1 +1.25 E+01

1.25e1 1250.0e-2

Commands per IEEE 488.2 with Asterisk

 Standard commands are used for programming device and

interface functions included with the SSP KONSTANTER, which are

described in the IEEE 488.2 (and 625-2) standard.

 These commands are identified with an asterisk (*) (2A

the beginning of the header.

 The asterisk is part of the header and must be transmitted with

the command.

 Please read the applicable sections of the specified standard for

detailed information concerning these commands.

hex

) at

58 GMC-I Messtechnik GmbH

Stringing Commands Together

 You can string several commands together and transmit them as a

single unit.

 In this case, the individual commands are separated with

semicolons (;).

 Blanks can be entered to the left and to the right of the

semicolons.

Example:

USET 10; OUTPUT ON; IOUT?

Comments  The individual commands are executed in the order they were

received.

 Setting and query commands can be mixed in a single

command string.

 If a string contains several query commands, semicolons (;) are

inserted between the requested parameters in the response string as well.

 If a string contains a faulty command, this part of the command

is ignored and the corresponding error bit is set in the event standard register (ESR), while the remaining commands are nevertheless executed.

Terminating Device Messages

a) IEEE 488 control:  The following end-of-text characters can be used for data receipt:

NL New line = line feed = (0Ahex) NL & EOI EOI = end or identify DAB & EOI DAB = last data byte

 The still common end-of-message character combination CR

LF (0D

followed by 0A

hex

) should no longer be used

hex

according to the standard.

 Although CR LF is accepted by the device for data receive, it

should be used in combination with EOI.

 In the case of transmission, the following end-of-message

character is used in the response string

NL + EOI

b) RS 232 control:  The following end-of-text characters can be used for data receipt:

NL (0Ahex) = new line = line feed CR (0Dhex) = carriage return CR LF carriage return and line feed ETB (17 hex) ETX (03 hex)

 In the case of transmission, the following end-of-message

character is used in the response string

NL (0Ahex) = new line = line feed

GMC-I Messtechnik GmbH 59

6.2 IEEE 488 Functions

Abbreviation Term Meaning

SH1 SOURCE HANDSHAKE Handshake source function

AH1 ACCEPTOR HANDSHAKE Handshake sink function

T6 TALKER Talker function with series polling and

L4 LISTENER Listener function with automatic unlisting,

TE0 No extended talker function

LE0 No extended listener function

SR1 SERVICE REQUEST Service request function

RL1 REMOTE/LOCAL Switching to and from manual and remote

DC1 DEVICE CLEAR Rest function including selected device clear

PP1 PARALLEL POLL Parallel polling function with remote

DT1 DEVICE TRIGGER Trigger function

C0 No controller function

E1 / 2 Open collector driver

automatic unlisting, without secondary address and without talk-only mode

without secondary address and without listenonly mode

operation, with local lockout

configuring

6.3 Overview

The following table provides an overview of device-specific settings and query commands. A detailed description of the respective device function is included in the next chapter, arranged in alphabetical order.

Command Overview According to Application

IDENTIFICATION / CONFIGURATION

•*IDN?

BASIC FUNCTIONS Extended BASIC FUNCTIONS

Setpoints

•USET

•ISET

•OUTPUT

• POWER_ON

Measured Value Query

•UOUT

•IOUT

•POUT

SEQUENCE and STEP-BY-STEP CONTROL FUNCT IONS

Sequence Control

•SEQUENCE

•START_STOP

• REPETITION

• SSET

•TDEF

•TSET

Memory management

•STORE

•*SAV

•*RCL

•*RST

•*SAV

•*RCL

•*LRN

•T_MODE

• SIG1_SIG2

• DISPLAY

•WAIT

Time Dependent FUNCTIONS, External CONTROL

•T_MODE

•OCP

•DELAY

•*DDT

•*TRG

•WAIT

MONITORING AND PROTECTION Functions

•ULIM

•ILIM

•OVSET

•MINMAX

•UMIN

•UMAX

•IMIN

•IMAX

•OCP

•DELAY

•MODE

• SIG1_SIG2

•CRA

•ERA

•ERB

Special COMMANDS STATUS and EVENT MANAGEMENT

•*TST

•CAL

•ADDRESS

•IFC

•SDC

•DCL

•*WAI

•*CLS

• *STB, *SRE

•*ESR, *ESE

•*IST, *PRE

•*OPC

• *PSC

Condition and event register

•CRA

• ERA, ERAE

• ERB, ERBE

60 GMC-I Messtechnik GmbH

6.4 Description

All setting, query, register management and interface commands are listed alphabetically in the following pages (*A..., *B..., *C..., ..., A..., B..., C..., ...). In addition to the application-specific overview in the previous chapter, setting, query and status commands are included in the appendix arranged according to function.

 If the maximum string length is exceeded, all characters in

excess of the allowable number are ignored and an execution error message is generated as well.

 In the case of “EXE”, the DDT register can be read out with

DDT?, but its content cannot be executed (“EXE” error message).

*CLS – Clear Status

Settings

Functions

 Clears all event registers: ESR, ERA and ERB.  Clears the status byte register (except for the MAV bit).  Any service requests SRQ are cleared.  Manual operation is not possible.

Programming

Setting command: *CLS

Example (HP Basic):

OUTPUT 713; “*CLS”

Action

Addressing status Unchanged Input and output buffers Unchanged Service request SRQ Cleared Status byte register STB Cleared except for MAV bit Event registers ESR, ERA, ERB Cleared Enable registers ESE, ERAE, ERBE, SRE, PRE Unchanged Set or stored parameters Unchanged

*DDT, *DDT? – Define Device Trigger

Functions  A command list with up to 80 characters can be saved to a

 The command list is executed after receiving the *TRG

command.

Query Read out content of the DDT register.

Programming

Query command: *DDT? Response string: *DDT command [;command][;command]

...

Length: Max. 80 characters Parameter: Command

Example (HP Basic):

OUTPUT 713; "*DDT?" ENTER 713; A$ DISP A$

Display: USET 10;ISET 5.6;TSET 0.5.00; OUT ON

*IDN? – Device Identification Query

Functions

 The KONSTANTER identifies itself.  Manufacturer, type designation, serial number, hardware

revision and software (firmware) revision.

Programming

Query command: *IDN? Response string: manufacturer,type,serial no.,hardware

revision.software revision

Length: 46 characters, fixed

Example for KONSTANTER 120 W / 40 V:

GOSSEN-METRAWATT,SSP32N040RU006P, XXXXXXXXX,04.001

Programming

Setting command: *DDT command [/command][/command]

...

Parameter: Command Parameter type: All specified device commands and

queries except for the *TRG command Setting range: Max. 80 characters Default setting: DDT memory cleared (after RESET, *RST)

Example (HP Basic):

OUTPUT 713; "*DDT USET 10 / ISET 5.6

/ TSET 05.00 / OUT ON"

OUTPUT 713; "USET 2"

OUTPUT 713;"*TRG"

Comments

 The slash in the command defines the command only, without

executing it immediately.

 An empty DDT register returns a blank as a response.  The command list is not checked for correct syntax and limit

values until a trigger command is received.

 *TRG may not be included in the *DDT command. Otherwise, bit

4 (EXE, execution error) would be set in the standard event

*IST? – Individual Status Query

Functions

 Command for directly querying parallel poll information

(see also chapter 6.3 on page 60 and table: “Query Commands for Status and Events Management” on page 86).

 Current status of the device’s IEEE488.1 “IST” message.  Content is not changed by the query.  An ASCII coded byte is returned as a response.

When using the RS232 interface without the IEEE488 interface value 1 is generally returned as a response.

Programming

Query command: *IST? Response string: 0 : “Local message is false”

1 : “Local message is true”

Length: 1 character, fixed

Example (HP Basic):

OUTPUT 713; “*IST” ENTER 713;A$ DISP A$

 Display: 0

GMC-I Messtechnik GmbH 61

*LRN? – Complete Configuration Query (LEARN)

Functions

 Complete list of all configurable functions.  Complete list of all current parameter settings.

Programming

Query command: *LRN? Response string: LRN list Length: 202 characters, fixed

Parameter: List all configurable functions including

current parameter settings

Example (HP Basic):

OUTPUT 713; "LRN?" ENTER 713; A$ DISP A$

 Display:

ULIM +035.000;ILIM +10.0000;OVSET +

050.0;OCP OFF;DELAY 12.00;USET +02

1.3000;ISET +09.5000;OUTPUT ON; POWER_ON RST;MINMAX ON; TSET 00.10;TDEF 10.00; REPETITION 000;START_STOP 020,115; T_MODE OUT;DISPLAY OFF

Note

 The controller determines the status of a current device

setting.

 This information can then be used for evaluation, or for

computer controlled configuration.

 A check system test sequence can first be executed manually

for all interconnected KONSTANTERs.

 The device settings required for the individual test steps are

queried by the controller with the *LRN? command.

 The response string can be transferred to the test program in

an unchanged fashion, and then serves as the string which will be sent to the respective KONSTANTER.

*OPC, *OPC? – Operation Complete Flag

Settings

 After completion of the command, a signal is transmitted to the

controller.

 The message can be read out via the serial and the parallel

interface.

Programming

Query command: *OPC?

Example (HP Basic):

OUTPUT 713; "USET 5; ISET 3; *OPC?"

*PSC/POC, *PSC/POC? – Power-On Status Clear Flag

Settings

Functions

 Response to the contents of non-volatile enable registers when

the device is switched off (see also chapter 6.5 on page 77 and the table: “Query Commands for Status and Events Management” on page 86).

Programming

Setting command: *PSC n Parameter: n (value) Setting range: "0": Enable registers will not be cleared.

"1": Enable registers will be cleared.

Example (HP Basic):

OUTPUT 713; "*PSC 1"

Query

Functions

 Status display for the PSC flag  Indicates response to the contents of non-volatile enable

registers when the device is switched off.

The PSC flag remains unchanged after switching the device off. The PSC flag remains unchanged after the *CLR command.

Programming

Query command: *PSC? Response string: "0": Enable registers will not be cleared.

"1": Enable registers will be cleared.

Functions

 Allows for synchronization of the controller and the device (see

also chapter 6.3 on page 60 and the table: “Query Commands for Status and Events Management” on page 86).

 OPC follows the command which will generate a message.  After completion of the command, bit “0” OPC is set in the

standard event register ESR.

 An SRQ can be generated in this way, depending upon ESE

masking.

 The message is read out via the parallel interface only.

Programming

Setting command: *OPC

Example (HP Basic):

OUTPUT 713; "USET 5; ISET 3; *OPC"

Query

Functions

 Are the controller and the device synchronized?  *OPC? follows the command which will generate a message.

62 GMC-I Messtechnik GmbH

*RCL – Recalling Stored Settings

Function and manual operation:

See explanation in chapter 4.10.

Programming

Setting command: *RCL n Parameter: n (memory location number) Parameter type: Integer (1  255)

Setting range 1  10 Parameter set from SETUP

memory

11  253 Parameter set from SEQUENCE

memory

254  255 Reference value memory

Format: n, nn, nnn

Example (HP Basic):

OUTPUT 713;"*RCL 11" {display of all parameters saved to memory location 11}

Note

 Memory locations 11 through 253 can be recalled by means of

interface programming, even if the sequence has not been opened.

 If an invalid (empty) memory location is accessed in sequence

memory, command execution is aborted. Err 21 appears at the display, and bit 5 is set in event register B (SEQE, SEQuence error).

 If a USET or ISET parameter exceeds the ULIM or ILIM limit value

during recall, Err 21 appears at the display and bit 5 is set in event register B (SEQE, SEQuence error).

As is the case with all other memory locations with an address of greater than 10, addresses 254 and 255 can be stored with *SAV and used for device configuration with *RCL.

*RST – Reset Device Settings

Function and manual operation:

See explanation on page 47.

Programming

Setting command: *RST

*SAV – Saving Device Settings

Function and manual operation:

See explanation in chapter 4.9.

Programming

Setting command: *SAV n Parameter: n (memory location number) Parameter type: Integer

Setting range: 0 *SAV 0 (display for manual

operation: Sto clr) clears contents of the sequence memory from the start address to the stop address.

1 to 10

11 to 253 Current SEq parameter settings

254 Reference value U_Lo, I_Lo 255 Reference value U_Hi, I_Hi

Current device settings are saved to the selected SETUP register.

are saved to the selected sequence memory location.

Example (HP-Basic): OUTPUT 713;"*RST"

Default settings:

OUTPUT OFF Output deactivated USET 0 Voltage setpoint = 0 ISET 0 Current setpoint = 0 OVSET max Max. overvoltage protection trigger value ULIM unom USET limit value = nominal voltage ILIM inom ISET limit value = nominal current OCP OFF Current limiting by means of current

regulation DELAY 0 Output is deactivated immediately in

event of CC

TSET 0 (=tdef) Sequence dwell time = default duration SEQUENCE OFF Sequence function deactivated DISPLAY ON Display activated MINMAX OFF No Min-Max value recording TDEF 0.01 REPETITION 0 (= cont.) START_STOP 011, 011

POWER ON Unchanged T_MODE Unchanged

Stored parameters:

SETUP memory locations 1 ... 10 Unchanged SEQUENCE memory Unchanged DDT register Cleared MINMAX memory Reset Parameter settings Reset to default settings

Addressing status Unchanged Input and output buffers Unchanged Service request SRQ Unchanged Status byte register STB Unchanged Event registers ESR, ERA, ERB Unchanged Enable registers ESE, ERAE, ERBE, SRE, PRE Unchanged

Default setting: After RESET (*RST)

Memory location number: n/a Memory location contents: unchanged

Example (HP Basic):

OUTPUT 713;"*SAV 3" {current device setting is saved to memory location 3}

*STB? – Status Byte Register Query

Functions



Read out “Query Commands for Status and Events Management” on page 86) –The status of group messages from the three event registers

–The status of the output buffer (not empty

–The status of the MSS group message masked with the SRE

– Bits 0, 1 and 7 are not used, and are always set to “0”.

When using the RS232 interface without the IEEE488 interface value 1 is generally returned as a response.

Programming

Example (HP Basic):

Note

 A message is always made available as a result of the query.  The response string is stored to the output buffer.  The MAV bit is set for this reason.  The value of n is always 16 in this case.  The *CLS command clears the status byte register.  However, the MAV bit is not cleared.

ESR, ERA and ERB (bits 2, 3 and 5)

(see also chapter 6.3 on page 60 and table:

➭ bit 4 MAV = 1,

empty

➭ bit 4 MAV = 0)

enable register from internal bits 2 through 5

Query command: *STB? Response string: n (decimal equivalent)

Value: 16 n  124 Length: 3 characters, fixed

OUTPUT 713; "*IST" ENTER 713; A$; DISP A$

 Display: 034 {034

= 0001 100010}

GMC-I Messtechnik GmbH 63

 SRQ is also reset.

*WAI – Wait to Continue

*TRG – Device Trigger Function

Functions Triggering of functions specified with *DDT (see also page 61)

Programming

Setting command: *TRG

Example (HP Basic):

OUTPUT 713;"*TRG"

Note

If DDT memory is empty, the trigger function is considered undefined. When the *TRG command is received, bit 4 (EXE, execution error) is immediately set in the standard event register. The *TRG command may not be used as part of the *DDT command. Execution of the *TRG command does not change the DDT register.

*TST? – Starting the Self-Test

Functions

 Command for a device self-test  Test results are written to the output buffer as a response.  The self-test has no effect on current device settings or stored

parameters.

 The self-test is started immediately after receipt of the

corresponding query command and has a duration of approximately 6 seconds.

Programming

Query command: *TST? Response string: 0 = test passed

1 = error detected

Length: 1 character, fixed

Notes:  As long as the test is running, no data can be transmitted to the

device and manual operation is disabled.

 Do not transmit the *TST? command together with other setting and/

or query commands in a single string.

 Enter a waiting period of approximately 6 seconds between

transmission of the query command and read-out of the response string.

 IEC bus control: Completion of the self-test can be recognize by

means of cyclical querying and evaluation of the status byte (serial polling) (test completed —> MAV-Bit = 1).

 The self-test is not influenced by serial polling.  If the self-test is failed, the TSTE bit is set in ERB (event register

B).

 If appropriate masking is implemented with event registers ERDE

and SRE, an SRQ message is triggered.

Functions

The *WAI command is of no significance for programming the KONSTANTER. It serves to synchronize the interface protocol in accordance with the IEC 488.2 standard.

ADDRESS – Interface Addressing

Function and manual operation:

See explanation in chapter 4.7.

Programming

Setting command: ADDRESS n Parameter: n (address number) Parameter type: Integer (whole number) Setting range: 0  n  30, 31 (= UNL unlist)

Example:

"ADDRESS 13"

Comments

 If the SSP KONSTANTER is operated at the serial interface only,

sub-addressing can be omitted.

 If the SSP KONSTANTER is operated at the optional IEEE488

interface, sub-addressing is ignored.

CRA? – Condition Register Query

Query

Functions

 Condition register A (see also chapter 6.3 on page 60 and the

table: “Query Commands for Status and Events Management” on page 86).

 8 bit status register  Current status of a certain device function at the point in time

of the query

 Direct writing and clearing is not possible.  Example

– Output in current regulating mode (CCR):

CCR status bit 1 is set (= 1) in the CRA.

– The status bit remains set for the duration of current

regulation. – CRA can be queried as often as desired. – The contents of the CRA are not changed by the query. – The current regulating mode is exited:

CCR status bit 1 is reset (= 0) in the CRA.

Programming

Query command: CRA? Response string: n (decimal equivalent)

Value: 0 n  255 Length: 3 characters, fixed

Example (HP Basic):

OUTPUT 713; "CRA?" ENTER 713; A$; DISP A$

 Display: 002 {002

(CCR, constant current regulation)

64 GMC-I Messtechnik GmbH

= 0000 00102}

DCL, SDC – Device Clear Function

Functions

 Clears input and output buffers at the computer interfaces.  e.g. requested data which have not been picked up  Clears internal interface waiting times or disabling. TheKONSTANTER is ready to receive data.  Manual operation is not possible.

Programming

Setting command: DCL (= device clear)

SDC (= selected device clear)

Used for: Both interfaces

Setting command: CLEAR 713 ( Used for: One IEC interface only, command for

specified bus user, fast

Setting command: CLEAR 7 (^ DCL ) Used for: IEC interface only, universal command for

all bus users, fast

Action

Addressing status Unchanged Input and output buffers Cleared Service request SRQ Unchanged Status byte register STB MAV bit = 0, otherwise Unchanged Event registers ESR, ERA, ERB Unchanged Enable registers ESE, ERAE, ERBE, SRE, PRE Unchanged Set and stored parameters Unchanged

Example (HP Basic):

a) OUTPUT 713;"DCL" b) CLEAR 713 c) CLEAR 7

SDC )

Example (HP Basic):

OUTPUT 713; "DELAY?"

ENTER 713; A$ DISP A$

Display: DELAY 10.70

DISPLAY, DISPLAY? – Activate / Deactivate Digital Displays

Settings

Functions

 Activate / deactivate the 7-segment displays during remote

operation

 If the display has been deactivated, it need not be continuously

refreshed.

 This results in somewhat shorter measuring and setting times

during interface operation.

Programming

Setting command: DISPLAY txt Parameter: txt (status) Parameter type: Text (character)

Setting range: OFF 7-segment display deactivated

ON 7-segment display activated

Default setting: ON (after RESET, *RST)

Example (HP Basic):

OUTPUT 713; "DISPLAY OFF" {deactivate 7-segment display}

Comment

If the “REMOTE” operating mode is exited, the 7-segment display is automatically reactivated.

Query

On-off status of the 7-segment displays

DELAY, DELAY? – Output Off Delay for OCP

Settings

Function and manual operation:

See explanation on page 26.

Programming

Setting command: DELAY v Parameter: v (value) Parameter type: Real number Setting range: 00.00 [s] ... 99.99 [s] Resolution: 10 ms Default setting: 00.00 [s] (after RESET (*RST))

Example (HP Basic):

OUTPUT 713;"DELAY 10.7" {output off delay: 10.7 seconds}

Query

Displays selected delay time from initialization of current regulation until the power output is deactivated.

Programming

Setting command: DELAY? Response string: DELAY v

Length: 11 characters, fixed Parameter: v (value) Format v:nn.nn

Programming

Query command: DISPLAY? Response string: DISPLAY txt

Length: 11 characters, fixed Parameter txt (status)

Example (HP Basic):

OUTPUT 713;"DISPLAY?" ENTER 713; A$ DISP A$

Display: DISPLAY OFF

ERA?, ERB?, *ESR? – Event Register Query

Functions

 Event register (see also chapter 6.3 on page 60 and the table:

“Query Commands for Status and Events Management” on page 86).

 The device is equipped with 3 event registers.

 An enable register is assigned to each event register.

 The registers can be queried separately.

 Acquiring and saving status changes for specific device

functions

 Information regarding events which have occurred at the device

since the last query

 The inputs respond in an edge controlled fashion.

 A bit is set if the associated function:

– Is changed from FALSE to TRUE (input ),

GMC-I Messtechnik GmbH 65

– Is changed from TRUE to FALSE (input ).

 The registers are reset as a result of querying.  The *CLS setting command clears all event registers.  Example

– Incorrect programming command occurs. – Command error bit 5, CME, is set to 1 in the ESR. – Bit 5 remains set, even in the event of subsequent correct

commands.

– After querying ESR, the CME bit is reset.

Programming

Query command:*ESR? event standard register

ERA? event register A ERB? event register B

Response string: n (decimal equivalent) Value: 0 n  255 Length: 3 characters, fixed

Example (HP Basic):

OUTPUT 713; "*ESR?" ENTER 713; A$; DISP A$

 Display: 032 {032

= 0010 00002}

(CME, command error)

Note

Refer to chapter 6.5 regarding conversion of the decimal equivalent for representation of set bits.

Example (HP Basic):

OUTPUT 713; "ERAE144" Bits 4 and 7 in the ERAE are prepared for forwarding {1001 0000

= 14410}

Query

Functions

 The query results in the selected register value.  The registers can be queried separately.  Register content is not changed by the query.

Programming

Query command: *ESE? event standard enable register

ERAE? event enable register A ERBE? event enable register B

*SRE? service request enable register *PRE? parallel poll enable register

Response string: n (decimal equivalent) Value: 0 n  255 Length: 3 characters, fixed

Example (HP Basic):

OUTPUT 713; "ERAE?" ENTER 713; A$; DISP A$

 Display: 144 {144

= 1001 00002 }

ERAE, ERAE?, ERBE, ERBE?, *ESE, *ESE?, *SRE, *SRE?, *PRE, *PRE?

–

Enable registers

Settings

Functions

 Enable register (see also chapter 6.3 on page 60 and the table:

“Query Commands for Status and Events Management” on page 86).

 The device is equipped with 5 enable registers.  Mask for forwarding messages from the event registers or the

status byte register

 The necessary bits must first be set in the respective enable

 Event information is only forwarded by registers which have

been set.

 Selective enabling or disabling of SRQ or IST for event messages  The registers can be written to separately.  The register contents are non-volatile.  Queries, the *CLS command and device functions do not

cause any changes to the register contents.

 Cleared only when the device is switched off, and if the non-

volatile PSC flag is also set to 1.

 Cleared by entering a value of 0.

IFC – Resetting the IEC Bus Interface (Interface Clear)

Functions

The IEC bus interface at the device is re-initialized with the IFC (INTERFACE CLEAR) bus interface command, and is returned to the standard default settings.

Addressing status Not addressed Input and output buffers Unchanged Service request SRQ Unchanged Status byte register STB Unchanged Event registers ESR, ERA, ERB Unchanged Enable registers ESE, ERAE, ERBE, SRE, PRE Unchanged Set and stored parameters Unchanged

Programming

Programming example (HP Basic): ABORT 7

Programming

Setting command: *ESE n event standard enable register

ERAE n event enable register A ERBE n event enable register B

*SRE n service request enable register *PRE n parallel poll enable register

Parameter: n (value) decimal equivalent, register

content

Parameter type: Integer Setting range: 0 n  255

66 GMC-I Messtechnik GmbH

ILIM, ILIM? Current Setting Limit Value

Settings

Function and manual operation:

See explanation on page 25.

Programming

Setting command: ILIM v Parameter: v (value) Parameter type: Real number Setting range: 0  v  ILIM

Device Type Nom. current [A] 2 3 6 10 12 20

ILIM

[A] 2.0 3.0 6.0 10.0 12.0 20.0

max

Step size [mA] 1.0 1.0 1.0 1.0 1.0 1.0

max

Example (HP Basic):

OUTPUT 713; "IMAX?" ENTER 713; A$ DISP A$

 Display: IMAX +02.8550

IMIN? – Minimum Measured Current Value

Function and manual operation:

See explanation in chapter 4.8.1.

Programming

Query command: IMAX? Response string: IMAX v Length: 13 characters, fixed

Parameter: v (value) Format: +nn.nnnn

If the selected value is not a whole number multiple of the step size, it is rounded off accordingly. If necessary, the numeric value is rounded off once again for the 4-place digital display.

Default setting: Nominal current (after RESET, *RST)

Example (HP BASIC):

OUTPUT 713; "ILIM 20" {current setting range limit: 20 A}

Comment

 ILIM may not be set to a value of less than ISET!  Any setting command to this effect is not executed.  Bit 1 would otherwise be set in event register B (limit error) and

bit 4 in the standard event register (execution error).

 The ILIM function does not effect the adjustment of ISET by

means of a control signal via the analog interface.

Query Displays the selected final value for current setpoint ISET.

Programming

Setting command: ILIM? Response string: ILIM v

Length: 13 characters, fixed Parameter v (value) Format v: +nn.nnnn

Example (HP Basic):

OUTPUT 713;"ILIM?" ENTER 713; A$ DISP A$

Display: ILIM +20.0000

IMAX? – Maximum Measured Current Value

Function and manual operation:

See explanation in chapter 4.8.1.

Programming

Query command: IMAX? Response string: IMAX v Length: 13 characters, fixed

Parameter: v (value) Format: +nn.nnnn

Example (HP Basic):

OUTPUT 713; "IMIN?" ENTER 713; A$ DISP A$

 Display: IMIN +02.7300

IOUT? – Querying the Momentary Current Value

Function and manual operation:

See explanation on page 23.

Programming

Query command: IOUT? Response string: IOUT v Length: 13 characters, fixed

Parameter: v (value) Format: +nn.nnnn

Example (HP Basic):

OUTPUT 713; "IOUT?" ENTER 713; A$ DISP A$

 Display: IOUT +02.7350

ISET, ISET? – Current Setpoint

Settings

Function and manual operation:

See explanation on page 21.

Programming

Setting command: ISET v Parameter: v (value) Parameter type: Real number Setting range 0  v  ILIM

Device Type Nom. Current [A] 2 3 6 10 12 20

[A] 2.0 3.0 6.0 10.0 12.0 20.0

ISET

max

Step size [mA] 0.5 1.0 2.0 2.5 3.33 5.0

If the programmed value is not a whole number multiple of the step size, it is rounded off in accordance with selected setting resolution.

GMC-I Messtechnik GmbH 67

If necessary, the numeric value is rounded off once again for the 4-place digital display.

Default setting: 0.00 [A] (after RESET, *RST)

ENTER 713; A$ DISP A$

 Display: MINMAX OFF

Example (HP BASIC):

OUTPUT 713;"ISET 11.3" {current setpoint: 11.3 A}

Comment

 ISET may not be set to a value of greater than ILIM.  Any setting command to this effect is not executed.  Bit 1 would otherwise be set in event register B (limit error), and

bit 4 in the standard event register (execution error).

Query

Displays the selected output current setpoint ISET.

Programming

Query command: ISET? Response string: ISET v Length: 13 characters, fixed

Parameter: v (value) Format: +nn.nnnn

Example (HP Basic):

OUTPUT 713; "ISET?" ENTER 713; A$ DISP A$

 Display: ISET +03.0000

MODE? – Querying the Momentary Control Mode

Function and manual operation:

 Displays the momentary output control mode.  Evaluation of condition register CRA.  Direct querying of the momentary control mode  See explanation in chapter 3 [3].

Programming

Query command: MODE? Response string: MODE txt Length: 8 characters, fixed

Parameter: txt (control mode) Query range: OFF output deactivated

CV constant voltage regulation CC constant current regulation OL overload (power limiting)

Example (HP Basic):

OUTPUT 713; "MODE?" ENTER 713; A$ DISP A$

 Display: MODE CV

MINMAX, MINMAX? – Min-Max Storage for Measured U and I Values

Function and manual operation:

See explanation on page 27.

Settings

Programming

Setting command: MINMAX txt Parameter: txt (status) Parameter type: Text (character)

Setting range OFF Storage of Min-Max values is

deactivated

ON Storage of Min-Max values is

activated

RST Contents of Min-Max memory are

reset, i.e. are replaced with the momentary measured value for the corresponding parameter.

Default setting: OFF (after RESET, *RST)

Example (HP Basic):

OUTPUT 713;"MINMAX RST"

Query

Displays Min-Max memory enable status.

Programming

Query command: MINMAX? Response string: MINMAX txt Length: 10 characters, fixed

Parameter: txt (status)

Example (HP Basic):

OUTPUT 713; "MINMAX?"

OCP, OCP? – Overcurrent Protection

Function and manual operation:

See explanation on page 26.

Settings

Programming

Setting command: OCP txt Parameter: txt (status) Parameter type: Text (character)

Setting range OFF Function inactive, continuous

current limiting (current regulation).

ON Function activated, the output is

deactivated as soon as the specified DELAY period has elapsed.

Default setting: OFF (after RESET, *RST)

Example (HP Basic):

OUTPUT 713;"OCP ON" {activate OCP function}

Query

Displays the selected status of the current limiting function.

Programming

Query command: OCP? Response string: OCP txt Length: 7 characters, fixed

Parameter: txt (status)

Example (HP Basic):

OUTPUT 713; "OCP?" ENTER 713; A$ DISP A$

 Display: OCP ON

68 GMC-I Messtechnik GmbH

OUTPUT, OUTPUT? – Activate / Deactivate the Output

Function and manual operation:

See explanation in chapter 3 [3].

Settings

Example (HP Basic):

OUTPUT 713; "OVSET?" ENTER 713; A$ DISP A$

 Display: OVSET +035.0

Programming

Setting command: OUTPUT txt Parameter: txt (status) Parameter type: Text (character)

Setting command OFF Deactivate the output

ON Activate the output

Example (HP Basic):

OUTPUT 713;"OUTPUT ON" {activate output}

Query

Displays the selected status of the power output.

Programming

Query command: OUTPUT? Response string: OUTPUT txt Length: 10 characters, fixed

Parameter: txt (status)

Example (HP Basic):

OUTPUT 713; "OUTPUT?" ENTER 713; A$ DISP A$

 Display: OUTPUT ON

POUT? – Querying the Momentary Power Value

Function and manual operation:

 Momentary values for output voltage and output current are

acquired by means of the POUT function.

 The two measured quantities are multiplied to arrive at power

value Pout.

 Approximately 90 ms are required to acquire and process the

measured values.

 See explanations in chapter 4.8.1.

Programming

Query command: POUT? Response string: POUT v Length: 12 characters, fixed

Parameter: v (value) Format: +nnnn.n

Example (HP Basic):

OUTPUT 713; "POUT?" ENTER 713; A$ DISP A$

 Display: POUT +0074.2

POWER_ON, POWER_ON? – Output Switching Status, Response After Power On

OVSET, OVSET? – Overvoltage Protection Trigger Value

Function and manual operation: See explanation on page 25 - OVP.

Settings

Programming

Setting command: OVSET v Parameter: v (value) Parameter type: Real number Setting range 0  v  OVSET

Device Type Nom. voltage [V] 20 40 80 360 OVSET

Step size [mV] 100 200 400 2000

Format: +nnn.n

Example (HP Basic):

Query

Programming

Query command: OVSET? Response string: OVSET v Length: 12 characters, fixed

Parameter: v (value) Format: +nnn.n

[V] 25 50 100 450

max

OUTPUT 713;"OVSET 35.0" {trigger value 35 V}

max

Function and manual operation:

See explanation on page 26.

Programming

Setting command: POWER_ON txt Parameter: txt (status) Parameter type: Text (character)

Setting range RST RESET: device default settings

RCL RECALL: last used device settings SBY STANDBY: last used device

settings, but power output remains inactive (OUTPUT OFF).

Example (HP Basic):

OUTPUT 713;"POWER_ON RST" {KONSTANTER is set to default settings after power-up}

Query

Displays device setting which determines status after power-up.

Programming

Query command: POWER_ON? Response string: POWER_ON txt Length: 12 characters, fixed

Parameter: txt (status)

Example (HP Basic):

OUTPUT 713; "POWER_ON?" ENTER 713; A$ DISP A$

 Display: POWER_ON RST

GMC-I Messtechnik GmbH 69

REPETITION, REPETITION? – Number of Repetitions for SEQUENCE Function

Function and manual operation:

See explanation on page 33.

Programming

Setting command: Parameter: n (number) Parameter type: Integer

Setting range 0 continuous repetition

Format: nnn Default setting: unchanged (after RESET, *RST)

REPETITION n

1 to 255 sequence repetitions

Notes:

1) This function is modified as of software release 003.

ON Open SEQUENCE,

as of rel. 003

SEQUENCE always

open

OFF Close / exit SEQUENCE,

as of rel. 003

same function as

SEQUENCE STOP

Default setting: ON (after RESET, *RST)

2) HOLD and CONT are only available as of software release 003.

When you switch your KONSTANTER on, rel 00x appears at

the display, indicating which software release you have.

3) Step-by-step control, similar to external trigger function /

T_MODE RCL

If no executable data have been saved to the stop address,

the last setting remains valid and the output is deactivated.

Example (HP Basic):

OUTPUT 713;"REPETITION 100" {100 repetitions}

Query

Display the number of sequence repetitions.

Programming

Query command:

REPETITION?

Response string: REPETITION n Length: 14 characters, fixed

Parameter: n (number)) Format: nnn

Example (HP Basic):

OUTPUT 713; "REPETITION?" ENTER 713; A$ DISP A$

 Display: REPETITION 100

SEQUENCE, SEQUENCE? – Automatic Sequential Recall of Stored Settings

Function and manual operation:

See explanation on page 34.

Programming

Setting command: Parameter: txt (status) Parameter type: Text (character)

Setting range: GO SEQUENCE is started with Strt

SEQUENCE txt

command

HOLD

Pause, suspend sequence at

current memory location

Resume automatic sequence run

CONT

with the next valid memory location

STRT3)Execute the first valid memory

location, output is activated, stepby-step control

Execute the next valid memory

STEP

location

Execute the stop address and end

STOP

the automatic sequence run or step-by-step control

Attention: Automatic and step-by-step sequence control (external trigger or setting command) are not interlocked.

Query

Through software release 10: Only for compatibility with existing programs for older device versions. The response is always SEQUENCE ON.

Programming (as of software release 04.001)

Query command:

SEQUENCE?

Response string: SEQUENCE txt,n1,n2 Length: 21 characters, fixed

Parameter: txt (status)

n1,n2 (number of remaining repetitions, current address)

Possible responses to text: “RUN”, “HOLD”, “RDY”

RUN: active sequence HOLD: sequence suspended RDY: device in initial state

Possible responses for number of remaining repetitions:

000: device in initial state,

no sequence running 001 ... 255: current number of remaining repetitions 999: continuous repetition, no specified

number of repetitions

Example (HP Basic):

OUTPUT 713; "SEQUENCE?" ENTER 713; A$ DISP A$

 Display: SEQUENCE RUN,237,111

RUN: active sequence 237: current number of remaining repetitions 111: current address (memory location)

Example (HP Basic):

OUTPUT 713;"SEQUENCE GO"

70 GMC-I Messtechnik GmbH

SIG1_SIG2, SIG1_SIG2? – Analog Interface Signal Outputs

SRQ – SERVICE REQUEST

Function and manual operation:

 As opposed to manual operation, the computer generated

SIG1_SIG2 command addresses both signal outputs simultaneously.

 Signal output 1: dependent upon power output status.  Signal output 2: dependent upon current output control mode.  The status of the SIG1_SIG2 function is not saved as a device

setting with the SAVE key.

 See explanations on page 29 ff.

Programming

Setting command: SIG1_SIG2 txt1,txt2 Parameter: txt1,txt2 (selection) Parameter type: Text (character) Setting range:

OFF

SIG n Passive high

ON OUT OUTPUT ON

OUTPUT OFF

MODE OFF or CV

CC or OL

Active low Passive high Active low Passive high Active low

SEQ GO Active low SSET OFF

U_LO U

U_HI U

I_LO I

I_HI I

meas

I  I

 I I

U  U

 U U

min

max

min

max

Passive high Active low

Functions

 The service request SRQ is only available via the IEEE parallel

interface.

 SRQ can be activated by any device which is connected to the

IEC bus.

 SRQ is the only way for a device to trigger a specified action at the

controller.

 The SRQ lead is activated by the KONSTANTER when it requests

service from the controller.

 SRQ allows for simultaneous execution of several tasks by the

controller, and thus increases its efficiency.

 The controller can execute other tasks until it receives an SRQ

from the device.

 In response to the SRQ message via the IEC bus, the control

computer can start serial polling of the device status (serial poll).

 In this way, the device which transmitted the SRQ as well as the

reason for the message, are both determined.

 If only one device is connected to the IEC bus, the controller can

read out the status byte directly and trigger the desired function

after receiving an SRQ.

 Primarily, the controller should read out information regarding

device statuses and events.

 The service request is transmitted via the common interrupt lead

(SRQ) at the IEC bus.

 SRQ trigger conditions can be selected from any of the messages

which occur in the event registers (including MAV).

 Which event message or messages result in an SRQ message

is determined by setting the enable registers accordingly (SRQ

masking

 If all utilized devices with SRQ capability are equipped with

parallel polling as well, it may be possible to identify the device

which generated the SRQ message more quickly by means of this function, assuming they have been configured accordingly.

Default setting: After RESET (*RST)  unchanged

Example (HP Basic):

OUTPUT 713; "SIG1_SIG2 OUT, MODE"

Query

Displays the selected function for the signal outputs at the analog interface.

Programming

Query command: SIG1_SIG2? Response string: SIG1_SIG2 txt1,txt2 Length: 19 characters, fixed

Parameter: txt1, txt2 (selection)

Example (HP Basic):

OUTPUT 713; "SIG1_SIG2?" ENTER 713; A$ DISP A$

 Display: SIG1_SIG2 OUT,MODE

Example: SRQ triggering upon receipt of an incorrect command:

 Assuming all event registers have an initial value of 0.  An incorrect command is received.  The ESR (event standard register) sets bit 4 (EXE, execution

error) or bit 5 (CME, command error).

 Did you previously set bits 4 and 5 in the ESE enable register

(command: *ESE 48)?

 If so, the ESR group message is generated in the STB (status

byte register).

 The associated SRE enable register must be set to bit 5

(command: *SRE 32).

 The ESR bit is now able to generate the MSS group message

(master summary status).

 The MSS group message enters itself once again to bit 6 in the

STB (status byte).

 In this way, a signal is generated indicating that there is at least

one reason for generating an SRQ message.

 The SRQ message is then triggered by the downstream service

request function.

 The respective commands for setting the assumed SRQ

conditions are thus: *ESE 48; *SRE 32.

 Service calls from the ERA and ERB event registers, or from the

MAV message, are generated in the same way.

GMC-I Messtechnik GmbH 71

Comments

 We recommend enabling the following events at the

corresponding registers for an SRQ message:

CME Command Error EXE Execution Error

QYE Query Error OTPA OTP Activated TSTE Self-Test Error LIME Limit Error

OVPA OVP Activated OCPA OCP Activated

OUTE OUTput Error SEQE Sequence Error

DDTE Define Device Trigger Error

 The setting commands required to this end read as follows:

*ESE 52; ERAE 56; ERBE 190; *SRE 52.

 As soon as one of these events occurs, the KONSTANTER is

no longer able to execute the desired setting.

RS 232C Serial Interface

 Use of the SRQ service request function is not possible via the

RS 232 serial interface.

 Similar results can nevertheless be obtained.  Set the PRE register (parallel poll enable) to the same value as

the SRE register (status byte enable register).

 Now query and evaluate the IST individual status message.  Query and evaluation can be executed cyclically, and/or each

time data is transmitted to the KONSTANTER .

SSET, SSET? – Switching Function Signal Level

Function and manual operation:

See explanation on page 31.

Programming

Setting command: SSET txt Parameter: txt (status) Parameter type: Text (character)

Setting range: OFF signal output n passive high

ON signal output n active low

START_STOP, START_STOP? – Memory Location Start and Stop Addresses for the SEQUENCE Function

Function and manual operation:

 As opposed to manual operation, start and stop memory

addresses are entered to a command.

 See explanations on page 32 ff.

Programming

Setting command: START_STOP n1, n 2 Parameter: n1, n2 (start address, stop address) Parameter type: Integer Setting range: Start address: 11 to 255

Stop address: 11 to 255

Condition: Start address < stop address Default setting: after RESET (*RST) : unchanged

Example (HP Basic):

OUTPUT 713;"STA 20, 115" {sequence start = address 20} {sequence end = address 115}

Query

Displays selected start and stop memory addresses for the SEQUENCE function.

Programming

Query command: START_STOP? Response string: START_STOP n1, n2 Length: 18 characters, fixed

Parameter: n1, n2 (start address, stop address)

Example (HP Basic):

OUTPUT 713; "STA?" ENTER 713; A$ DISP A$

 Display: START_STOP 020,115

Example (HP Basic):

OUTPUT 713;"SSET OFF" Signal output SIG_OUT1/SIG_OUT2 at the analog interface generates a passive high signal.

Query

Queries the sequence’s function status.

Programming

Query command: SSET? Response string: SSET txt Length: 8 characters, fixed

Parameter: txt (status)

Example (HP Basic):

OUTPUT 713; "SSET?" ENTER 713; A$ DISP A$

 Display: SSET OFF

72 GMC-I Messtechnik GmbH

STORE, STORE? – Transferring Parameters Directly to Memory

Functions

 The STORE command and its parameters can only be queried

via an interface with appropriate programming.

 It immediately overwrites all values of the memory location with

the new parameter data.

 Memory location contents are not shifted.

Programming

Setting command: STORE n, v1, v2, v3, txt Parameter: n, v1, v2, v3, txt (memory address, USET,

ISET TSET, SSET)

Parameter type: Integer, real, real, real, character Setting range: n 11 ... 255

w1 0  v1  USET w2 0  v2  ISET w3 00.01 [s]  w3  99.99 [s]

txt OFF, ON, CLR (deletes the entire

memory location regardless of other data)

Example (HP Basic):

OUTPUT 713;"STORE 14,15.5,3,9.7,ON" {overwrites memory location 14 with the following data: Uset = 15.5 V; Iset = 3 A; Tset = 9.7 sec; active low signal during execution}

Comments

 As opposed to *SAV, the STORE command allows for

significantly faster and more direct programming of the required memory locations for a sequence.

 The txt parameter is optional in the future. If the txt parameter

is omitted, the comma between the last numeric parameter and the txt parameter is omitted as well. The NC txt parameter is treated like the non-transmitted txt parameter.

 Response to the txt parameter:

Tra ns mi tte d txt Parameter

none or NC

OFF

CLR Any Memory content is deleted.

Response from SSP32N

Memory Location, Before Memory Location, After

Valid setpoints

Empty

Any

New setpoints are transferred, switching status remains unchanged

New setpoints are transferred, switching status is set to OFF.

New setpoints are transferred, switching status is set to ON.

New setpoints are transferred, switching status is set to OFF.

Query

Recall data from address n from SEQUENCE memory / limit value memory:

max

Programming

Command Value Range Meaning

a Store? Query contents of a memory range from the start

b Store? n n = 11 ... 255 Query contents of memory location n

c Store? n1,n2 n1, n2

d Store? n1,n2,tab n1, n2

= 11 ... 255 n2 n1

address to the stop address (AAA and EEE)

Query contents of a memory range from address n1 to address n2

Query contents of a memory range from address n1 to address n2, delimiter between output parameters: tabulator character =09h, decimal point = decimal comma, line break = 0Ah

Query command: a) STORE?

b) STORE? n c) STORE? n1,n2

Response string: a)/c) STORE AAA/n1, v1, v2, v3, txt; ... ;

STORE EEE/n2, v1, v2, v3, txt

b) STORE n, v1, v2, v3, txt

Length: case b): constant 37 characters

case a)/c): ((n2-n1+1)x38)-1 characters

Parameter: n, v1, v2, v3, txt

(nnn,+000.000,+00.0000,00.00,CLR) (memory address, USET, ISET TSET,

SSET)

If the response to SSET is CLR, the queried memory location is empty.

Example b) (HP Basic):

OUTPUT 713; "STORE? 14" ENTER 713; A$ DISP A$

 Display:

STORE 014,+015.000,+03.0000,09.70, ON

Example a)/c)

(HP Basic for case a, start address 11 and stop address 13 apply):

a) OUTPUT 713; "STORE?" c) OUTPUT 713; "STORE? 11,13" ENTER 713; A$ DISP A$

 Display:

STORE 011,+015.000,+03.0000,09.70, ON; STORE 012,+010.000,+04.0000,01.50,OFF; STORE 013,+020.000,+07.0000,02.30, ON

Example d) (HP Basic):

OUTPUT 713; "STORE? 11,13,tab" ENTER 713; A$ DISP A$

 Display:

STORE011+015,000+03,000009,70



ON STORE012+010,000+04,000001,50OFF STORE013+020,000+07,000002,30ON

Significance of delineators:



= ASCII 09h tabulator



= ASCII 0Ah line feed

  

GMC-I Messtechnik GmbH 73

TDEF, TDEF? – Default Time for SEQUENCE Function

Query

Displays selected trigger input function.

Functions:

See explanation on page 32.

Programming

Setting command: TDEF v Parameter: v (value) Parameter type: Real Setting range: 00.01 [s] – 99.99 [s] Resolution: 10 ms Default setting: after RESET (*RST): unchanged

Example (HP Basic):

OUTPUT 713;"TDEF 12.34"

Query

Recall the default value for standard dwell time.

Programming

Query command: TDEF? Response string: TDEF v Length: 10 characters, fixed

Parameter: v (value)

Example (HP Basic):

OUTPUT 713; "TDEF?" ENTER 713; A$ DISP A$

 Display: TDEF 12.34

Programming

Query command: T_MODE? Response string: T_MODE txt Length: 10 characters, fixed

Parameter: txt (action)

Example (HP Basic):

OUTPUT 713; "T_MODE?" ENTER 713; A$ DISP A$

 Display: T_MODE LLO

TSET, TSET? Dwell Time Specific to Memory Location for the SEQUENCE Function

Function and manual operation:

 See explanations on page 31.  Setting value TSET is saved to SETUP memory as a device

setting with the SAVE command.

Programming

Setting command: TSET value

Parameter type: Real Setting range: 00.01 [s] ... 99.99 [s] Resolution: 10 ms Format: nn.nn Default setting: after RESET (*RST): 00.00 = TdEF

T_MODE, T_MODE? – Trigger Input Function Selection

Functions

 The status of the T_MODE function is not saved as a device

setting with the SAVE key.

 See explanations on page 28 - trG.

Programming

Setting command: T_MODE txt Parameter: txt Parameter type: Action (character)

Setting range: OFF Trigger output deactivated

OUT Trigger input influences OUTPUT:

output on/off

RCL RECALL: memory recall (step-by-

SEQ SEQUENCE: sequential memory

LLO LOCAL LOCKED: Control panel

MIN MINMAX: Min-Max memory control

Default setting: Unchanged (after RESET, *RST)

Example (HP Basic):

OUTPUT 713;"T_MODE LLO" {trigger input influences control panel disabling}

1 If the SEQUENCE function has not first been initialized, an

active trigger signal results in error message “Err 27”, which is displayed for approximately 1 second, and bit 5 (SEQE) is set in event register B (ERB). “RCL” or “SEQ” settings can only be executed if the SEQUENCE function has been fully initialized.

step)

recall (SEQUENCE GO)

disabling; indicated by LOCKED / SEQ LED at the front panel

for measured values

Example (HP Basic):

OUTPUT 713;"TSET 00.02"

Query

Recall memory location-specific dwell time.

Programming

Query command: TSET? Response string: TSET v Length: 10 characters, fixed

Parameter: v (value) Format: nn.nn

Example (HP Basic):

OUTPUT 713; "TDEF?" ENTER 713; A$ DISP A$

 Display: TDEF 00.02

74 GMC-I Messtechnik GmbH

ULIM, ULIM? – Voltage Setting Limit Value

UMAX? – Maximum Measured Voltage Value

Function and manual operation:

See explanation on page 25.

Programming

Setting command: ULIM v Parameter: v (value) Parameter type: Real number Setting range: 0  v  ULIM

max

Device Type Nom. voltage [V] 20 40 80 360 ULIM

[V] 20 40 80 360

max

Step size [mV] 1.0 1.0 1.0 1.0

Default setting: after RESET (*RST)  nominal voltage

Example (HP BASIC):

OUTPUT 713;"ULIM 20" {voltage setting range limit: 20 V}

Comment

 ULIM may not be set to a value of less than USET!  Any setting command to this effect is not executed.  Bit 1 would otherwise be set in event register B (limit error), and

bit 4 in the standard event register (execution error).

 If the selected value is not a whole number multiple of the step

size, it is rounded off accordingly.

 If necessary, the numeric value is rounded off once again for

the 4-place digital display.

 The ULIM function does not effect the USET setting by means of

a control signal via the analog interface.

Query

Displays the selected final value for voltage setpoint USET.

Programming

Query command: ULIM? Response string: ULIM v

Length: 13 characters, fixed Parameter v (value) Format v: +nnn.nnn

Example (HP Basic):

OUTPUT 713;"ULIM?" ENTER 713; A$ DISP A$

Display: ULIM +020.000

Function and manual operation:

See explanation in chapter 4.8.1.

Programming

Query command: UMAX? Response string: UMAX v Length: 13 characters, fixed

Parameter: v (value) Format: +nnn.nnn

Example (HP Basic):

OUTPUT 713; "UMAX?" ENTER 713; A$ DISP A$

 Display: UMAX +028.125

UMIN? – Minimum Measured Voltage Value

Function and manual operation:

See explanation in chapter 4.8.1.

Programming

Query command: UMAX? Response string: UMAX v Length: 13 characters, fixed

Parameter: v (value) Format: +nnn.nnn

Example (HP Basic):

OUTPUT 713; "UMIN?" ENTER 713; A$ DISP A$

 Display: UMIN +027.350

UOUT? – Querying the Momentary Voltage Value

Function and manual operation:

See explanation on page 23.

Programming

Query command: UOUT? Response string: UOUT v Length: 13 characters, fixed

Parameter: v (value) Format: +nnn.nnn

Example (HP Basic):

OUTPUT 713; "UOUT?" ENTER 713; A$ DISP A$

 Display: UOUT +027.350

GMC-I Messtechnik GmbH 75

USET, USET? – Voltage Setpoint Value

WAIT – Additional Waiting Time

Function and manual operation:

See explanation on page 20.

Programming

Setting command: USET v Parameter: v (value) Parameter type: Real number Setting range: 0  v  ULIM

Device Type Nom. voltage [V] 20 40 80 360 ULIM

[V] 20 40 80 360

max

Step size [mV] 5 10 20 100

Default setting: After RESET (*RST)  0.00 V

Example (HP BASIC):

OUTPUT 713;"USET 12.5" {voltage setpoint: 12.5 V}

Comments

 USET cannot be set to a value of greater than ULIM.  Any setting command to this effect is not executed.  Bit 1 would otherwise be set in event register B (limit error), and

bit 4 in the standard event register (execution error).

 If the selected value is not a whole number multiple of the step

size, it is rounded off accordingly.

 If necessary, the numeric value is rounded off once again for

the 4-place digital display.

Query

Also displays the output voltage setpoint defined by means of USET.

Function:

Additional waiting time between execution of two commands. This function can be used to add additional waiting time within a command string (linked commands) during processing / execution. For example, this allows for defined programming of a specified power-on status / start-up edge within a command string with execution time in the millisecond range.

Programming

Setting command: WAIT v Parameter: v (value) Parameter type: Real number Setting range: 0.001 <s>  v  9.999 <s>,

resolution: 1 ms

Comments

The length of the command string may not exceed 255 characters (= buffer length), because an unspecified pause would otherwise occur as a result of the additional data transmission.

Attention: Data are not processed during waiting time, and the input buffer is disabled, which means that the display messages are not updated during this time either.

Example

"USET 0; ISET 5; OUTPUT ON; WAIT 0.001; USET 3; WAIT

0.003; USET 7; WAIT 0.003; USET 10"

(or "US 0; IS 5; OU ON; W .001; US 3; W .003; US 7; W .003; US

10" with decoupled command name)

Programming

Query command: USET? Response string: USET v

Length: 13 characters, fixed Parameter v (value) Format v: +nnn.nnn

Example (HP Basic):

OUTPUT 713;"USET?" ENTER 713; A$ DISP A$

Display: USET +012.500

76 GMC-I Messtechnik GmbH

6.5 Status and Events Management

DI08 DI07

DI05 DI04 DI03 DI02 DI01

PON

CME

EXE

QYE

OPC

SEQI

OTPI OTPA OVPA OCPA

OL CCR CVR

TCE TRGA SEQE OUTE DDTE

LIME

S2A

S1A

7 6 5 4 3 2 1 0

7 6 5 4

7 6 5 4 3 2 1 0

SEQB TRGA OTPA OVPA S12A

CCR

CVR

ESR MAV ERA ERB

0 0

7 6 5 4 3 2 1 0

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0

1 0 1 0 1 0 1 0 1 0 1 0

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0

RQS MSS

1

Service Request Generation

Parallel Poll Functions

DI06

MSS

Service Request Functions

rsv

RQS

SRQ

SRQ/STSLED

*SRE?

Serial Poll

*STB?

*SRE n

(0 n 255)

*PRE?

*IST?

ist

*ESE n (0 n 255)

ERAE?ERA?CRA?

ERAE n (0 n 255)

ERB?

ERBE?

ERBE n (0 n 255)

*OPC

*OPC?

*PRE n

(0 n 255)

PPC

Command

*ESR?

*ESE?

1 0

*PSC?

*PSCn (n=0;1)

Clear ESE, SRE, PRE

Condition Register

Event Register

Enable Register

Status Byte Register

Enable Register

Query Command

TRUE = 1 FALSE = 0

Status/Event

Bit no.

Weighting

Setting Command

128

64 32 16

2 1

Power On

Command Error

Execution Error

Query Error

Operation Complete

Message Available

Sequence Busy

Overtemperature

Overload

Overvoltage

Constant Current Regulation

Constant Voltage Regulation

Output Disabled by OCP

Trigger signal at analog interface

Self-Test or Calibration Error

Sequence Execution Error

Output-On Error

DDT Error

Limit Error

SIG2_OUT, Active Signal Occurred

SIG1_OUT, Active Signal Occurred

SIG1_OUT/ SIG2_OUT active

Parallel Poll

0

The device is equipped with special registers which can be queried by the controller in order to recognize:

• Programming errors (e.g. receipt of an incorrect command)

• Device statuses (e.g. output in voltage regulating mode)

• Events (e.g. output deactivated by OCP function)

GMC-I Messtechnik GmbH 77

Status and event register settings and queries are only possible via the

serial or the parallel interface!

Overview – Significance of Register Contents

TCE Self-Test Error or Error During Calibration

 An error was recognized during the self-test.  Device calibration error  Calibration has not been completed successfully.  At least one calibration value was not within the

allowable range.

CCR Constant Current Regulation

Output is/was in the current regulating mode.

CVR Constant Voltage Regulation

Output is/was in the voltage regulating mode.

CME Command Error

Faulty command

 Unknown command  Syntax error  Parameter value is not within the setting range.

DDTE Define Device Trigger Error

Error message for the device trigger setting

 *DDT command string > 80 characters  *TRG command included in *DDT command string

EXE Execution Error

 Command-specific parameter value limits have been

exceeded.

 A command or a parameter is incompatible with the

present operating state.

LIME Limit Error

Limit value error after setting command USET, ISET, ULIM,

ILIM

 Voltage or current setpoint adjusted higher than the

selected limit value

 A limit value has been selected which is less than the

momentary voltage or current setpoint.

MAV Message Available

Ready message following a query command

 Requested data are in the output buffer.  The MAV bit should only be queried by means of serial

polling during IEC bus mode operation.

OCPA Overcurrent Protection Active

Overcurrent protection is active.

 Output deactivated by OCP function  Reactivate with OUTPUT ON

OL Overload

Overload message  Power limiting has been triggered.

OPC Operation Complete

Ready message  Commands preceding the *OPC command have been

executed (time synchronization).

OTPA Overtemperature Protection Active

Overcurrent protection is active.

 The device is overheated, e.g. due to obstructed vents.  The OUTPUT ON setting command is ignored as long as

this condition persists, and causes repeated setting of the OTPA bit in the event register.

OTPI Overtemperature Protection Inactive

Ready for operation message after OTPA overtemperature

message:

 The device has cooled back down.  If the POWER-ON function is set to SBY or RST, the output

remains deactivated.

 If it has been set to RCL, automatic reactivation ensues.

OUTE Output Error

Error message after OUTPUT ON setting command:

Activation of the output is disabled by an OUTPUT OFF

signal at the trigger input of the analog interface.

 Display: “Err 25”

OVPA Overvoltage Protection Active

Overload protection has been triggered.

 The output has been deactivated.  Reactivate with OUTPUT ON.

PON Power On

 The device was switched off for an interim period of

time.

QYE Output queue without message

Error message after addressing as talker:  No message is (yet) available at the output buffer.

SEQB Sequence Busy

The SEQUENCE function is running.

SEQI Sequence Inactive

Ready message  Sequence run ended or aborted

SEQE Sequence Error

Error message after SEQUENCE GO  A voltage or current setpoint value which has been

recalled from sequence memory is higher than the respective limit value (USET > ULIM or ISET > ILIM), display “Err 21”.

 Memory range from the start address to the stop

address does not contain any executable values, display: “Err 22”.

 The sequence run is aborted when this error message

appears.

S1A SIG1_OUT, Active Signal Occurred

S2A SIG2_OUT, Active Signal Occurred

S12A SIG1_OUT or SIG2_OUT active

TRGA Trigger at Analog Interface

Trigger signal detected at analog interface

Decimal Equivalent of Register Content

• Querying data registers always results in a decimal number.

• The decimal number designates the content of the register.

• For an 8-bit register, this number is within a range of 0 to 255.

• The number represents all set register bits.

• The number must be converted to a binary value to this end.

Example:

In response to the query CRA?, you receive the following response: 52

Conversion: 52 : 2 = 26 rest 0 bit 0

26 : 2 = 13 rest 0 bit 1 13 : 2 = 6 rest 1 bit 2

6 : 2 = 3 rest 0 bit 3 3 : 2 = 1 rest 1 bit 4 1 : 2 = 0 rest 1 bit 5 0 : 2 = 0 rest 0 bit 6 0 : 2 = 0 rest 0 bit 7

The binary representation of 52

is thus: 0011 0100

• The binary representation indicates which bits are set in condition register A (CRA).

3 (OL = overload) 5 (OVPA = overvoltage) 6 (OTPA = overtemperature)

• These bits may have triggered an SRQ (service request).

78 GMC-I Messtechnik GmbH

7 Adjusting the SSP KONSTANTER

nom

off

out

select

off

IEEE 488

RS 232

off

x.xxx)

off,

xxx.xxx)

off,

xxx.xxx)

CAL – “Calibration” Function Group

7.1 General Information and Definition of Terms

Adjustment

 Also known as balancing.  Adjust (balance) a measuring instrument such that measuring

deviation is as small as possible.



Adjustment

instrument.

Calibration

 Determination of deviation at a finished measuring instrument  Indicating measuring instrument:

Deviation of the displayed value from the value determined as correct

 Transmitting measuring instruments:

Deviation of the initial signal value from the value which this signal would demonstrate in the case of ideal transmission performance with a defined input value

Retracing

 A process by means of which measured values indicated by a

measuring instrument can be compared with the national standard for the respective measured quantity, either in a single or in several steps

General

The adjusting routine integrated into the KONSTANTER (CAL) allows for the elimination of deviation between actual value and setpoint resulting from component ageing at user-specified intervals.

is a procedure which permanently changes the measuring

 The associated external measured values (actual values) are

entered to the system and compared with the setpoint values.

 A straight line is drawn between the actual values as well, and

linear deviation from the setpoint curve (slope and ordinate segment) is saved to memory.

 These values are stored to the EEPROM, and are used for all

adjustments.

 Each newly adjusted voltage value along the setpoint curve is

calculated based upon the actual curve and deviation, for adjustment to the exact voltage value.

 The same applies to balancing current values.  Adjustment can be executed manually, or automatically via the

interfaces with the help of a PC.

Figure 7.1 b Adjusting the KONSTANTER Manually, or with a PC

Figure 7.1 a Continuous Adjustment of Uset

0: Zero point U

nom

select

out

off

Nominal voltage Selected voltage value Output voltage Offset voltage = 0.5% of U Full-scale voltage = 95% of U

 In order to adjust the system, 2 fixed voltage values (U

are selected internally (setpoints), and a straight line (desired curve) is drawn between them.

GMC-I Messtechnik GmbH 79

nom

and UFS)

off

7.2 Adjusting Procedure

Calibrator

SENSE

Calibrator

SENSE

SSP Konstanter is ready to display offset current

FUNCTION

Jump to last edited function group

Press once

Press repeatedly if necessary

ENTER

Select date of

Jump to date selected

for last adjustment

CE/LOCAL

readjustment

ENTER

Set to the value read from the

Acknowledge the external measured value.

ENTER

Press and hold the ENTER key for at least 5

ENTER

End adjustment and return to function groups menu.

CE/LOCAL

ENTER

Set to the value read from the external measuring instrument with the scroll keys.

ENTER

Acknowledge the external measured value.

Set to the value read from the external measuring instrument with the scroll keys.

Acknowledge the external measured value.

ENTER

Set to the value read from the external measuring instrument with the scroll keys.

ENTER

Acknowledge the external measured

CE/LOCAL

SELECT

Self-Test

CV OU TPUT

CC OUTPUT

Increase load or short circuit the output

CE/LOCAL

SSP Konstanter is ready to display offset voltage.

SSP Konstanter is ready to display full-scale voltage.

SSP Konstanter is ready to display full scale current.

seconds to start the adjusting routine.

external measuring instrument with the scroll keys.

value.

Manual Balancing

Preparation

In order to adjust the KONSTANTER, you’ll need a highly accurate measuring instrument whose resolution is roughly one class better than that of the KONSTANTER (see also Technical Data).

Connecting the Measuring Instrument for Output Voltage Adjustment

The KONSTANTER’s power output must be deactivated (OUTPUT OFF).

Connect the measuring instrument directly (parallel) to the power output of the KONSTANTER. Adjustment accuracy can be

further increased by additionally connecting the sensing leads.

Figure 7.2 a

Switch the measuring instrument on, and select the correct

Connection Schematic for Output Voltage Adjustment

voltage range for the measurement. The upper range limit must be at least as great as nominal voltage of the KONSTANTER.

Select the voltage adjusting functions and then activate the KONSTANTER’s power output (OUTPUT ON).

Connecting the Measuring Instrument for Output Current Adjustment

The KONSTANTER’s power output must be deactivated (OUTPUT OFF).

Observe the measuring instrument’s maximum current measuring range.

If the KONSTANTER’s maximum output current value is less than the measuring instrument’s maximum current measuring range, the measuring instrument can be connected in series directly to the power output.

If the maximum output current value is greater than the measuring instrument’s maximum current measuring range, the measuring instrument must be connected to the KONSTANTER’s power output via a properly dimensioned shunt resistor. Adjustment accuracy can be further increased by additionally connecting the sensing leads.

Figure 7.2 b Connection Schematic for Output Current Adjustment

Switch the measuring instrument on, and select the correct current range for the measurement. The upper range limit must be at least as great as nominal current of the KONSTANTER.

Select the current adjusting functions and then activate the KONSTANTER (OUTPUT ON).

80 GMC-I Messtechnik GmbH

Figure 7.2 c Manual Device Adjustment

Selecting the Adjustment (calibration) Function

The KONSTANTER is operated in the standard operating mode.

23 Press the <FUNCTION> key once in order to access the

function groups menu.

24 Repeatedly press the <FUNCTION> key until the CAL function

group appears at the display.

25 If CAL appears at the left-hand display, press the <ENTER>

key to access the adjustment (or calibration) function.

Setting the New Adjustment Date

26 At first, date appears at the left-hand display, and the date of

last adjustment appears at the right-hand display.

27 Select today’s date with the <> key or the <> key. 28 After setting the date, press the <ENTER> key.

The date is saved and the following message appears at the display: CAL Strt. Strt blinks.

Starting the Adjustment (calibration) Routine

29 Press and hold the <ENTER> key for at least 5 seconds in order

to start the adjusting (calibration) routine.

If the <ENTER> key is held depressed for less than 5 seconds, the device is automatically returned to its default setting.

If this is the case, press the <FUNCTION> key once again, in order to return to CAL Strt.

Adjusting Offset Voltage and Full-Scale Voltage

30 MEAS UoFF blinks at the display (measure offset voltage). The

KONSTANTER is ready to display offset voltage.

31 Press the <ENTER> key.

UoFF appears at the left-hand display, and the voltage value measured by the KONSTANTER appears at the right-hand display (0.5% of U

nom

The blinking digit indicates the smallest adjustable decimal . The CV and OUTPUT LEDs light up, and the output is active.

Compare the UoFF value with the value displayed at the external measuring instrument.

If these two values are different, set the KONSTANTER to the value measured by the external measuring instrument with the <> key or the <> key.

32 Save the corrected UoFF value to the KONSTANTER by

pressing the <ENTER> key.

After pressing the <ENTER> key, MEAS UFS blinks at the display (measure full-scale voltage).

33 Press the <ENTER> key.

UFS appears at the left-hand display, and the voltage value measured by the KONSTANTER appears at the right-hand display (95% of U

nom

The blinking digit indicates the smallest adjustable decimal place.

Compare this value with the value displayed at the external measuring instrument.

If these two values are different, set the KONSTANTER to the value measured by the external measuring instrument with the <> key or the <> key.

34 Save the corrected UFS value to the KONSTANTER by

pressing the <ENTER> key.

MEAS IoFF appears at the display.

Adjusting Offset Current and Full-Scale Current

35 The KONSTANTER must be set to the current regulating mode

in order to adjust offset current and full-scale current! Increase load to this end, or short circuit the output. The CV LED goes out, and the CC and OUTPUT LEDs light up.

MEAS IoFF blinks at the display (measure offset current). The KONSTANTER is ready to display offset current.

Press the <ENTER> key. IoFF appears at the left-hand display, and the current value measured by the KONSTANTER appears at the right-hand display (0.5% of I

nom

The blinking digit indicates the smallest adjustable decimal .

Compare this value with the value displayed at the external measuring instrument.

If these two values are different, set the KONSTANTER to the value measured by the external measuring instrument with the <> key or the <> key.

36 Save the corrected IoFF value to the KONSTANTER by

pressing the <ENTER> key.

After pressing the <ENTER> key, MEAS IFS blinks at the display (measure full-scale current).

37 Press the <ENTER> key.

IFS appears at the left-hand display, and the current value measured by the KONSTANTER appears at the right-hand display (95% of I

nom

The blinking digit indicates the smallest adjustable place.

Compare this value with the value displayed at the external measuring instrument.

If these two values are different, set the KONSTANTER to the value measured by the external measuring instrument with the <> key or the <> key.

38 Save the corrected IFS value to the KONSTANTER by

pressing the <ENTER> key.

Ending Adjustment of the KONSTANTER

39 CAL End appears at the display after acknowledging the last

selected current value.

Exit the adjusting function by pressing the <ENTER> key.

40 All of the adjustment values are now stored to memory.

SEt appears at the left-hand display. The device is returned to the function groups menu. A new function group can now be selected with the <FUNCTION> key, or the menu can be exited by pressing the <CE/LOCAL> key in order to return to the standard display.

Manually Aborting the Adjusting Routine Prematurely

If, during one of the adjusting steps, you discover that

deviation between the measured values from the KONSTANTER and the external measuring instrument will be too large (making adjustment impossible) adjustment can be aborted prematurely in order to retain the previous adjustment values.

41 Repeatedly press the <CE/LOCAL> key until CAL appears at

the left-hand display. The display is returned to the beginning of the adjusting routine.

42 Press the <CE/LOCAL> key once again in order to exit the

adjusting function and return to the function groups menu.

Automatic Adjustment Abort Triggered by the KONSTANTER

43 If the KONSTANTER is unable to execute adjustment

because measured value deviation is too great, the adjustment values are not saved to memory in the last step of the adjusting routine.

The KONSTANTER returns itself to the UNCAL status, activates default values (not previous adjustment values) and exits the adjusting function. In addition, each time the KONSTANTER is switched on the Cal error flag is set.

GMC-I Messtechnik GmbH 81

Computer-Aided Balancing

FUNCTION

Jump to last edited function group

Press once

Press repeatedly if necessary

SELECT

ENTER

LOCKED/SEQ

blinks

USET / ISET

Preparation

Connect the bus cable to the interfaces at the PC and the KONSTANTER.

Further preparation for computer-aided adjustment of the KONSTANTER is identical to preparation for manual adjustment.

Computer-Aided Adjustment (manual)

In this case, you’ll work interactively with the PC, the KONSTANTER and the measuring instrument. The following command is used to control the KONSTANTER via the PC:

CAL txt, v

Parameter txt, v

Alternatives for the txt and v parameters

txt, v Description

Uoff Start adjustment,

U-Offset-Adj. setting

Uoff, xxx.xxx U-Offset:

externally measured voltage

Ufs Setting:

U-Upper-Limit-Adj.

Ufs, xxx.xxx U-Upper-Limit:

externally measured voltage

Ioff I-Offset-Adj. setting

Ioff, xxx.xxx I-Offset:

externally measured current

Ifs I-Upper-Limit-Adj. setting

OUTPUT 713; "CAL Ufs, 71.00" 

71.00 is the value read from the external measuring instrument. It is entered as a numeric parameter value.

OUTPUT 713; "CAL Ioff" 

The KONSTANTER reads out the Ioff value. Read the measured value from the external measuring instrument.

OUTPUT 713; "CAL Ioff, 0.048" 

0.048 is the value read from the external measuring instrument. It is entered as a numeric parameter value.

OUTPUT 713; "CAL Ifs" 

The KONSTANTER reads out the Ifs value. Read the measured value from the external measuring instrument.

OUTPUT 713; "CAL Ifs, 5.863" 

5.863 is the value read from the external measuring instrument. It is entered as a numeric parameter value.

OUTPUT 713; "CAL date, 06.95" 

As opposed to direct computer adjustment, the adjustment date must be entered after the routine has been completed. However, the last adjustment date cannot be queried in this case. The adjusting routine is finished after the adjustment date has been entered.

Computer-Aided Adjustment (automatic)

Use an additional bus cable to connect the PC and the external measuring instrument to each other.

A program must be written for fully automated adjustment which is matched to the interface, allowing for data exchange amongst the PC, the system multimeter and the KONSTANTER, as well as data interpretation and translation.

The commands used for transmitting data correspond to those listed above for keyboard entry.

Ifs, xxx.xxx I-Upper-Limit:

externally measured current

DATE, mm.yy Adjustment date, exit adjustment

In order to implement this command, it must be translated into the language required by the interface. We use HP Basic for IEC bus systems, which results in the following syntax:

Output 713; "CAL Uoff"

7.3 Self-Test Triggering

 The device tests itself for possible errors.  Select the CAL function group from the function group menu.  Press the < SELECT> key.  tESt Strt appears at the display.  Start the self-test by pressing the <ENTER> key.  The LO CKE D/S EQ LED blinks during testing.  Any detected errors are indicated by briefly displaying the

Command Description

Err 11 message (see error list).

Output Command to the PC to transmit data to an

external device via the interface

713 Address of the KONSTANTER (external device)

"CAL Uoff" Command for the KONSTANTER, quotations

define beginning and end

Example for adjustment with PC

Adjustment must be executed in the following manner and sequence.

OUTPUT 713; "CAL Uoff" 

The start adjustment command is transmitted to the KONSTANTER. The KONSTANTER reads out the Uoff value. Read the measured value from the external measuring instrument.

OUTPUT 713; "CAL Uoff, 0.478" 

0.478 is the value read from the external measuring instrument. It is entered as a numeric parameter value.

OUTPUT 713; "CAL Ufs" 

The KONSTANTER reads out the Ufs value.

Figure 7.3 Triggering the Self-Test Manually

Read the measured value from the external measuring instrument.

82 GMC-I Messtechnik GmbH

8 Appendix

8.1 Adjustable Functions and Parameters

Setting saved with *SAV n:

Setting Command Significance / Effect

Manual setting or via interface

Manual

IEEE 488

n=1... 10

RS 232C

Default setting after

n=11... 255

RESET *RST:

Explanation in Chapter on Page

Addr n Set device address for RS 232 or IEEE 488 (interface configuration) X p. 38 ADDRESS

nn:0;1; ... ; 31 (device addresses) X unchanged p. 64

txt Set transmission speed (interface configuration) X unchanged p. 39

bAUd

txt: 50; 75; 150; ... ; 4800; 9600; 19.2t (transmission speed in bits per sec.)

CAL Start “CAL” routine in accordance with chapter 7 of the operating instructions X unchanged p. 80

txt, v XX p. 81

CAL

txt Set number of data bits (interface configuration) X unchanged p. 39

dbit

v Output off delay for OCP (setup) X X p. 26

dly

vv:0; 0.1; ... 99.9 (delay time in seconds) X X X 0.00 s p. 65

DELAY DISPLAY

txt Activate / deactivate digital displays X X ON p. 65

v Current setting limit (setup) 0 v  I

ILIM

v Current setpoint 0 v  ILIM X X X X X 0.000 p. 21

ISET

OCP

txt Response selection for current limiting (overcurrent protection), (setup) X X X X oFF p. 22

txt: 7; 8

txt: off, on

v: 12.00 (example: 12.00 A) p. 67

v: 10.75 (example: 10.75 A) p. 67

txt: oFF, on (current regulation / output off after expiration of delay time dLY) p. 68

nom

XXXX I

nom

p. 25

Output (key) Activate / deactivate the output X oFF p. 21

txt txt: OFF, ON XXX p. 69

OUTPUT

v Overvoltage protection trigger value (setup) 0 v  1.25 x U

OVP

vv:32.5 (example: 32.5 V) X X X p. 69

OVSET Pbit

txt Set parity bit (interface configuration) X unchanged p. 39

txt: nonE no parity bit

X X 1.25 x U

nom

p. 22

ZEro always 0 EVEn even numbered odd odd numbered onE always 1

pon

txt Device setting selection after power-up (setup) X p. 26

POWER_ON

txt txt: rSt (default settings) X X unchanged p. 69

SbY (last used settings, output deactivated) rcL (last used settings)

rEP

n Repetition, number of sequence repetitions (sequence) X X cont or 0 =  p. 33

REPETITION

nn:1; ... ; 255 XXX p. 70



rnd txt Round off the displayed measured value (setup) X unchanged p. 27

Sbit

txt Set number of stop bits (interface configuration) X unchanged p. 40

SEq

txt Sequence, automatic memory recall X on

SEQUENCE

txt: 0; –1; –2 (no rounding, round by one or two decimal places)

txt: 1; 2

txt txt: Go (start); (off, on (close/end, open)) running SEQ, “stop” p. 70

p. 34

Hold (pause/suspend); cont (resume); strt, step, stop (step-by-step control) X X

txt Signal output 1 (analog interface) X unchanged p. 29

SiG1 SiG2

txt Signal output 2 (analog interface) X p. 29

Sig1_Sig2

txt1, txt2 txt: oFF SIG inactive (passive high) X X p. 71

on out

SIG active (active low) Signal level depends upon the output’s activation status OUTPUT on: passive high OUTPUT OFF: active low

ModE

Signal level depends upon momentary control mode OFF or CV: passive high CC or OL: active low

SEq

Signal level depends upon activated sequence run Sequence being executed: active low

SSEt

Signal level depends upon SSET switching function ( SEQUENCE) OFF: passive high ON: active low

U_Lo

Compare measured voltage value with USET from sequence memory location 254. Measured voltage value  reference value: passive high Measured voltage value < reference value: active low

U_Hi

Compare measured voltage value with USET from sequence memory location 255. Measured voltage value  reference value: passive high Measured voltage value > reference value: active low

I_Lo

Compare measured current value with ISET from sequence memory location 254. Measured current value  reference value: passive high Measured current value < reference value: active low

I_Hi

Compare measured current value with ISET from sequence memory location 255. Measured current value  reference value: passive high Measured current value > reference value: active low

GMC-I Messtechnik GmbH 83

Setting saved with *SAV n:

Setting Command Significance / Effect

Manual setting or via interface

Manual

IEEE 488

RS 232C

RESET *RST:

Default setting after

n=1... 10

n=11... 255

Explanation in Chapter on Page

SSEt txt Set a message signal (sequence / analog interface) X X X X X oFF p. 31

StoP

n Stop address for the sequence X X 11 p. 33

n Start address for the sequence X X 11 p. 32

Strt

StART_STOP

n, v1, v2, v3, txt Direct transfer of parameter data to memory X X no effect p. 73

STORE

v Dwell time independent of memory location (sequence) X X X X 0.01 s p. 32

tdEF

trG

txt Function selection for the trigger input (analog interface) X unchanged p. 28

txt txt: oFF (trigger input deactivated) X X p. 74

T_MODE

txt: oFF, on (message signal off/on) p. 72

n: 11; ... ; 255

n1, n2 n: 11; ... ; 255 X X X 11; 11 p. 72

n: 11; 12; ... ; 253; 254; 255, memory address v1:

Voltage setpoint

v2:

Current setpoint

v3:

Memory location-specific dwell time

txt: Switching function, ON or OFF signal level, CLR: complete deletion of memory location data

v: 00.01; ... , 99.99 (in seconds) p. 74

out (trigger input influences the OUTPUT) rcL (memory recall, step-by-step) SEq (sequence execution control) LLO (control panel disabling control)

v Memory location-specific dwell time (sequence) X X X X X tdef p. 31

tSEt

txt Min-Max storage for measured U and I values (setup) X X oFF p. 27

txt txt:

MINMAX

v Voltage setting limit (setup) 0 v  U

ULIM

v Voltage setpoint 0 v  ULIM X X X X X 0.000 p. 20

USET

Function-Specific Commands and Device Settings

WAIT

v Additional waiting time XX p. 76

*CLS Clear status command X X no effect p. 61

DCL

, SDC Clear input and output buffers, all settings and register contents unchanged X X no effect p. 65

*DDT txt Define device trigger X X DDT memory p. 61

ERAE

n Device dependent event register A enable command X X no effect p. 66

ERBE

n Device dependent event register B enable command X X no effect p. 66

*ESE n Standard event enable command X X no effect p. 66

v: 00.00; 00.01; ... , 99.99 (in seconds), at 00.00: value from tdEF automatically p. 74

oFF; on; rSt

v: 15.0 (example: 15.0 V) p. 75

v: 12.5 (example: 12.5 V) p. 76

v: 0.001;0.002 ... 9,999 (waiting time in seconds)

txt: max. 80 characters, example: *DDT USET 10/ISET 3/OUT ON

IFC INTERFACE CLEAR: Rest and initialize the IEC bus interface

(all settings and register contents remain unchanged)

*OPC Operation complete command X X no effect p. 62 *PRE n Parallel poll enable register command X X no effect p. 66 *PSC n Power-on status clear command X X no effect p. 62

*RCL n Recall and set X X X no effect p. 62

n: 1 ... 10 a stored device setting

(Min-Max measured value storage control) remote: “MIN”

(Min-Max value storage off/on/reset) X X X p. 68

nom

XXXX U

cleared

nom

11 ... 255 stored parameters: USET, ISET TSET and SSET

*RST Reset device to default settings X X X p. 63

General Commands and Settings

*SAV nn:0 *SAV 0 deletes the contents of memory locations n1 to n2 by using the address

parameters of the sequence function defined by START_STOP

n1, n2.

XXX

no effect p. 63

1 ... 10 Save current device settings 11 ... 253 Save momentary settings for USET, ISET TSET and SSET 254, 255 Reference values USET and ISET

*SRE n Service request enable command X X no effect p. 66

SRQ Service request X no effect p. 71

*TRG Trigger: trigger the function specified with *DDT X X no effect p. 64 *WAI Wait to continue command X X no effect p. 64

p. 25

p. 66

Abbreviated commands: Commands can be abbreviated with letters shown in boldface. Letters not printed in boldface can be omitted.

Example: "OUTPUT ON" = "OU ON"

As a rule, letters can be entered in upper or lower case.

Stringing commands together: Several commands in a single data string must be separated by semicolons (;).

Example: "USET 12; ISET 8.5; OUTPUT ON"

Formats for numeric parameters: n: Whole number (integer)

v: Whole number, fixed or floating decimal point number with or without exponent

Examples: “12.5”, “0012.5”, “1.25E1”, “+1.25 e+01”

84 GMC-I Messtechnik GmbH

8.2 Queriable Functions and Parameters

Read out via interface

IMAX? Max. measured current value from Min-Max memory [A] X X X IMIN? Min. measured current value from Min-Max memory [A] X X X IOUT? Momentary measured current value [A] X X X MODE? Momentary output operating mode (control mode)

CV = constant voltage, CC = constant current OL = overload, OFF = output deactivated

POUT? Momentary measured power value [W] X X X UMAX? Max. measured voltage value from Min-Max memory [V] X X X

Measured Value Query

UMIN? Min. measured voltage value from Min-Max memory [V] X X X UOUT? Momentary measured voltage value [V]

DELAY? Selected delay time for OCP function X X X DISPLAY? On-off status of the 7-segment displays X X X ILIM? Selected current setting range limit [A] X X X ISET? Selected current setpoint value [A] X X X MINMAX? Min-Max memory enable status X X X OCP? Selected current limiting function X X X OUTPUT? Output on-off status OVSET? Selected overvoltage protection trigger value [V] X X X POWER_ON? Selected power-up status X X X REPETITION? Selected number of repetitions for the sequence function X X X SEQUENCE? Sequence function status SIG1_SIG2? Selected function for signal outputs at the analog interface SSET? Selected switching signal for the sequence function X X X START_STOP? Selected start and stop memory addresses for the sequence function STORE?

Recall data from start address to stop address from sequence / limit value memory

STORE? n Recall data from address n from sequence / limit value memory STORE? n1,n2 STORE? n1,n2,txt

Recall data from address n1 to address n2 from sequence / limit value memory

Recall data from address n1 to address n2 from sequence / limit value memory with tab

n, n1, n2: 11, 12, ... , 255 (memory address), n2  n1, optional

Function-Specific Device Queries

TDEF? Selected default time for the sequence function X X X

txt: tab (optional)

T_MODE? Selected trigger input function X X X TSET? Selected dwell time for the sequence function X X X ULIM? Selected voltage setting range limit [V] X X X USET? Selected voltage setpoint value [V] X X X

*DDT? DDT function memory content X X *IDN? Device ID X X

*LRN? Complete settings X X

General Queries

*TST? Start self-test results query X X

“off” as in “Stop”, SEQ. function always open

“/” instead of “;” within txt

or front panel display selectable / possible

LED

Si 91 txt or Si 92 txt

Strt n or Stop n

Manual: RCL n and scroll through parameters with [SELECT] key (indirect)

Status indicated by blinking “LOCKED/SEQ” LED,

rrep and rcl with <SELECT> key

in general: length = ((n2-n1+1)x38)-1 characters, with n1, n2 also as start/stop address

0 = error-free, 1 = error

Front panel 3)RS 232C

XXX

Response string for remote operation (example):

10 characters 10 characters 10 characters

IEEE 488

IMAX +15.4 400 IMIN -00.0 100 IOUT +11.5 100 MODE CV

POUT +0662 .7 UMAX +021. 310 UMIN +021. 280 UOUT +021. 300

DELAY 12.0 0 DISPLAY ON ILIM +20.0 000 ISET +18.0 000 MINMAX ON OCP OFF OUTPUT ON OVSET +050 .0 POWER_ON R ST REPETITION 000 SEQUENCE H OLD,255,11 SIG1_SIG2 OUT,MODE SSET OFF START_STOP 020,115

STORE 014, +015.500,+ 03.0000,09 .70, ON

TDEF 10.00 T_MODE OUT TSET 00.10 ULIM +035. 000 USET +021. 300 USET +010. 000;ISET + 18.0000 GOSSEN-METRAWATT,SSP32N040RU00 6P,XXXXXXXXX,04.001 ULIM +020.000;ILIM+20.0000;OV SET +025.0;OCP OFF;DELAY 12.00 ;USET +019 .300;ISET +18.0000;O UTPUT ON

ON;TSET TITION 00 T_MODE OU 0

;

POWER_ONRST;MINMAX

0.10;TDEF 10.00;REPE

;START_STOP 020,115;

;DISPLAYOFF

Explanation

Resp.

string

Chapter

length

on Page

13 p. 67 13 p. 67 13 p. 67

8p. 68

12 p. 69 13 p. 75 13 p. 75

p. 75

13 11 p. 65

11 p. 65 13 p. 67 13 p. 67 10 p. 68

7p. 68 10 p. 69 12 p. 69 12 p. 69 14 p. 70 21 p. 70 19 p. 71

8p. 72 18 p. 72

p. 73

10 p. 74 10 p. 74 10 p. 74 13 p. 75 13 p. 76

1...80 p. 61 49 p. 61

202 p. 62

1p. 64

GMC-I Messtechnik GmbH 85

8.3 Query Commands for Status and Events Management

Read out via interface

CRA? Condition register A query X X 002 3 p. 64

D7: SEQB Status message: sequence function active (run, hold) D6: TRGA Signal at analog interface trigger input D5: OTPA Overtemperature (excessive temperature) D4: OVPA Overvoltage protection triggered D3: S12A SIG1_OUT/SIG2OUT active D2: OL Overload D1: CCR Output in current regulating mode D0: CVR Output in voltage regulating mode

ERA? Device dependent event register A query X X 032 3 p. 65

D7: SEQI Sequence function completed (inactive) (ready) D6: OTPI Ready for operation message after OTPA D5: OTPA Overtemperature message D4: OVPA Overvoltage protection triggered D3: OCPA OCP function triggered: D2: OL Overload has occurred D1: CCR Current regulation has occurred D0: CVR Voltage regulation has occurred

ERAE? Device dependent event register A enable query X X 032 3 p. 66 ERB? Device dependent event register B query X X 128 3 p. 65

D7: TCE Self-test error or error during adjustment D6: TRGA Signal at analog interface trigger input D5: SEQE Sequence function error message D4: OUTE Error message after OUTPUT ON, disabling

via trigger input at analog interface D3: DDTE Define device trigger function error message D2: LIME Limit error, ULIM < USET or ILIM < ISET D1: S2A SIG2_OUT, active signal occurred D0: S1A SIG1_OUT, active signal occurred

ERBE? Device dependent event register B enable query X X 128 3 p. 66

*ESE? Standard event status enable query X X 032 3 p. 66 *ESR? Standard event status register query X X 144 3 p. 65

Query Status and Event Registers

D7: PON Power On D6: 0 (URQ user request) D5: CME Command error D4: EXE Execution error D3: 0 (DDE device depend error) D2: QYE Query Error D1: 0 (RQC request control) D0: OPC Operation complete

*IST? Individual status query *OPC? Operation complete query X X 1 1 p. 62 *PRE? Parallel poll enable register enable query X X 012 3 p. 66 *PSC? Power-on status clear query X X 0 1 p. 62 *SRE? Status request enable query X X 012 3 p. 66 *STB? Read status byte query

D7: 0 D6: RQS MSS D5: ESR Standard event register D4: MAV Message Available D3: ERA Event register A D2: ERB Event register B D1: 0 D0: 0

When using RS232 interface without IEEE488 interface, value 1 is generally returned as a response.

When using RS232 interface without IEEE488 interface, the invalid value 127 is generally returned as a response.

Response string for remote operation (example):

Resp. string

RS 232C

IEEE 488

X0 1 p. 61

X 034 3 p. 63

length

Explanation

in Chapter

on Page

86 GMC-I Messtechnik GmbH

8.4 Overview of Menu Functions

FUNCTION

CE/LOCAL

ENTER

FUNCTION

ENTER

CE/LOCAL

ENTER

CE/LOCAL

SELECT

ENTER

GMC-I Messtechnik GmbH 87

8.5 Memory Structure

Actual Value Query

Setpoint Specification

REPETITION

STOP

START

TDEF

MINMAX

DELAY

OCP

OVSET (OVP)

ILIM

ULIM

OUTPUT

SSET

TSET

ISET

USET

SETUP

Memory

Min-Max

Measured

Momentary

Measured

Power Off Memory

Default Device Settings

#10

#11 #253(5) #254

#255 UMAX

UMIN

IMAX

IMIN

UOUT

IOUT

POUT



UOUT > UMAX

UOUT < UMIN

IOUT > IMAX

IOUT < IMIN

*SAV n

*RCL n

*SAV n

*RCL n or SEq Go

STORE n

Sequence Memory

STORE? n

e.g. USET v

e.g. USET?

STORE n

Mains Power On & Pon rcl / SbY

*RST

Power On & Pon rSt

Mains Power Off

*RCL n

*SAV n

Active

Device

Settings

n = 1 ... 10 n = 11 ... 253 (254, 255)

Comparative

Memory

for

Limit Value

Message

n = 254, 255

Lo- Hi-

Limit Values

e.g. UMAX?

e.g. UOUT?

SIG2

SIG1

T_MODE

Addr



Non-volatile memory range

Memory locations can be overwritten

with the “Store” command, or completely

deleted from the start address to the

stop address with the “*SAV 0”

command. The “insert” and “delete”

commands can be used within this

range. The contents of individual memory

locations can be deleted with the “Clear”

command, regardless of how the range

of memory locations has been defined.

Memory

Value

Values

88 GMC-I Messtechnik GmbH

8.6 Indication of Operating States

Control Mode / Operating State Additional Linking LED / Display Color Display Function Comment

Contin-

Blinking

uous

Voltage regulation OUTPUT ON CV green  Current regulation OUTPUT ON CC green  OUTPUT ON OUTPUT red 

OFF OUTPUT red  OFF In event of OTP OUTPUT red See OTP function

Primary overload, I limit OUTPUT ON P curve yellow 

OTP / Pon rcl OUTPUT OFF P curve yellow Retained after manual reset

OUTPUT red As long as OTP is active

SRQ/STS yellow Retained after manual reset OTP / Pon OUTPUT OFF P curve yellow Retained after manual reset stby, rst OUTPUT red Remains latching OFF

SRQ/STS yellow Retained after manual reset

Overvoltage OVP CV green OUTPUT is latching in the OFF state

OUTPUT red 

SRQ/STS yellow Indicates reset

Overcurrent protection OCP selected in menu

OCP active CC green 

Display of

Output voltage Uout green Activated output voltage appears at the display

Output voltage setpoint Output current Iout green Activated output current appears at the display

Output current setpoint

Bus functions

Remote programming REMOTE yellow  Addressing mode ADR / DATA yellow  Service request In remote mode SRQ / STS yellow Indicates activated protective function

Front panel controls disabled With activated function LOCKED / SEQ yellow 

Sequence function

Measured values, menu Two 4-place numeric LED displays

OCP is on in the FUNCTION menu Iset yellow Brief blinking

Iset yellow Brief blinking

SRQ/STS yellow Indicates reset

OUTPUT red Remains latching OFF

SET function Uset yellow Uset appears at the display

SET function Iset yellow Iset appears at the display

LOC KE D / SEQ yel lo w  1/1 With running sequence

LOC KE D / SEQ yel lo w  1/3 With suspended sequence

GMC-I Messtechnik GmbH 89

8.7 System Messages

Error messages may appear at the digital display immediately after the device is switched on, or after manual or remote control triggering of certain functions.

Code Meaning / Cause Remedy

Err 1 ROM checksum error

ROM memory test failed

Err 2 RAM write/read error.

RAM memory test failed

Err 4 Write/read error.

Initialization of the IEC bus interface failed: – Electrical isolation, optocoupler – Auxiliary power – Controller

Err 11 After execution of the self-test

(manual). The measured value of the manipulated parameter was compared with the numeric setpoint at the momentary operating point with activated output and a deviation of > n resolution was detected (n is defined internally, U: 15 LSD; I: 30 LSD).

➭ CAL

Err 3 An unspecified self-test sub-function

has failed.

Err 7 Serial interface disabled,

impermissible configuration, e.g. 8DB, PE, 2SB, or 7DB, PN, 1SB. The error message is displayed during the power-up routine, or under the “BUS” menu item after each entry.

Err 20 Attempted deletion and insertion

outside of the defined memory range (from start to stop address).

Err 21 Error message during SEQUENCE

function operation, or after RECALL: The (next) voltage or current setpoint value to be recalled from the SEQUENCE memory is higher than the respective limit value (USET > ULIM or ISET > ILIM). For this reason, memory recall cannot be executed. The SEQUENCE run is aborted.

Err 22 Error message after SEQUENCE GO:

No executable values exist within the memory range defined by the START and STOP addresses for the SEQUENCE run. The SEQUENCE run cannot be started.

Err 24 Attempted recall of an invalid value

(remote: *RCL xxx, where 011  xxx 

255).

Err 25 Error message after OUTPUT ON:

Activation of the output is disabled by an OUTPUT OFF signal at the trigger input of the analog interface.

Err 31 CMD error (remote)

Err 32 CMD error (remote) Adhere to calibration sequence

Err 33 Uoff, Ufs

Err 34 Iff, Ifs

Err 35 Inadequate balancing range – Check entered data

➭ Device must be in voltage

regulating mode

➭ Device must be in current

regulating mode

The device must be tested at a service center and repaired if necessary.

Check the contents of the SEQUENCE to be executed and coordinate setpoints and limit values.

Check the selected START and STOP addresses, as well as the contents (USET, ISET and TSET) of the memory locations defined by these parameters.

In order to activate the output, either the trigger control signal must be set to low, or trigger input action must be set to another function, after which the OUTPUT ON command must be re-executed.

e.g. eliminate short-circuit or reduce load

e.g. increase load or short circuit the output terminals

– Hardware error?

Code Meaning / Cause Remedy

Err 36 Calibration error:

An uncorrected error has occurred, no CAL data could be saved. Additional message(s):

40 U_offset setpoint 41 U_offset measured value 42 U_full-scale setpoint 43 U_full-scale measured value 44 I_offset setpoint 45 I_offset measured value 46 I_full-scale setpoint 47 I_full-scale measured value

Err 99 POWERFAIL

Voltage dip has occurred at auxiliary supply power

➭ RE-START

+OL or

Display indicates measuring function

–OL

over-ranging: If measured output voltage UOUT or output current IOUT violates the specified range ( +OL or –OL appears at the display. The appearance of this message always indicates that the specified limit values for output voltage or current have been violated. Examples: UOUT indicates +OL: e.g. caused by overdriving output voltage with an analog control signal applied to the analog interface. UOUT indicates –OL: due to incorrectly connected sensing leads. IOUT indicates +OL: e.g. caused by overdriving output current with an analog control signal applied to the analog interface. POUT indicates +OL: Since POUT is calculated by multiplying UOUT and IOUT, it can be assumed that one of the above listed causes is responsible for this message.

➭ chapter 1.5.3),

90 GMC-I Messtechnik GmbH

8.6 Index

Control mode query

LED display . . . . . . . . . . . . . . . . . . . 16

PC query . . . . . . . . . . . . . . . . . . . . 68

Device settings

Current settings

Query from PC . . . . . . . . . . . . . 62

Save

From PC

Manual . . . . . . . . . . . . . 41

From setup and sequence memory

Activate

From PC Manual

Reset

From PC Manual

Transfer to / query from sequence memory

From PC

Digital displays

Switch on/off at PC

Digital trigger

Define Device Trigger Define device trigger

Trigger

Digitalanzeigen

LLO . . . . . . . . . . . . . . . . . . . . . . . 46

. . . . . . . . . . . . 63

. . . . . . . . . . . . 62

. . . . . . . . . . . . . 45

. . . . . . . . . . . . . . . . . 63

. . . . . . . . . . . . . . . . . . 47

. . . . . . . . . . . . . . . . . 73

. . . . . . . . . . . . . . 65

. . . . . . . . . . . . 61

. . . . . . . . . . . . . . . . . . 64

Editing memory

Deleting a memory location . . . . . . . . . 44

Deleting a memory range . . . . . . . . . . 42

Deleting the contents of a memory location

Inserting a memory location . . . . . . . . 43

Saving data

Enabling/disabling front panel controls . . . . . 46

. . . . . . . . . . . . . . . . . . . 41

Interface

IEEE 488 functions Installation

Setting data bits . . . . . . . . . . . . . . . . 39

Setting stop bits Setting the device address

Setting the parity bit . . . . . . . . . . . . . 39

Setting transmission speed

Sub-addressing with RS 232 . . . . . . . . 64

Internal resistance

Increase for output

. . . . . . . . . . . . . . 60

. . . . . . . . . . . . . . . . . . . 12

. . . . . . . . . . . . . . . . 40

. . . . . . . . . 38

. . . . . . . . . 39

. . . . . . . . . . . . . . 57

Memory structure

Overview . . . . . . . . . . . . . . . . . . . . 88

Functions

. . . . . . . . . . . . . . . . . 87

Overview

MINMAX memory

Display

. . . . . . . . . . . . . . 67, 75

From PC

Manual . . . . . . . . . . . . . . .23, 40

Edit

. . . . . . . . . . . . . . . . . 68

From PC

Manual . . . . . . . . . . . . . . . . . . 27

Operating commands

Abbreviation . . . . . . . . . . . . . . . . . . 58

List of query commands . . . . . . . . . . . 85

List of setting commands

List of status and event queries . . . . . . 86

Numeric parameters . . . . . . . . . . . . . 58

Overview according to application

Per IEEE 488.2 . . . . . . . . . . . . . . . . 58

Query . . . . . . . . . . . . . . . . . . . . . . 58

. . . . . . . . . . . . . . . . . . . . 59

Stringing

Syntax . . . . . . . . . . . . . . . . . . . . . . 58

Termination . . . . . . . . . . . . . . . . . . 59

Text parameters

Output current

Measured value

Analog interface

Display . . . . . . . . . . . . . . . . . . 23

. . . . . . . . . . . . . . . . 67

PC query

Setpoint

From PC

. . . . . . . . . . . . . . . . . 67

. . . . . . . . . . . . . . . . . . 21

Manual Via analog interface

Setting limit

. . . . . . . . . . . . . . . . . 67

From PC Functions description

Manual . . . . . . . . . . . . . . . . . . 25

Output power

. . . . . . . . . . . . . . . . . . . . . 23

Display

PC query . . . . . . . . . . . . . . . . . . . . 69

Output switching status

Response after power on

. . . . . . . . . . . . . . . . . 69

From PC

. . . . . . . . . . . . . . . . . . 26

Manual

Switch / query

From PC . . . . . . . . . . . . . . . . . 69

. . . . . . . . . . . . . . . . . . 21

Manual

Output voltage

Auto-sensing mode . . . . . . . . . . . . . 49

Measured value

Analog interface

Display . . . . . . . . . . . . . . . . . . 23

. . . . . . . . . . . . . . . . 75

PC query

Setpoint

From PC

. . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . 20

Manual Via analog interface

Setting limit

. . . . . . . . . . . . . . . . . 75

From PC

Functions description . . . . . . . . . 22

Manual . . . . . . . . . . . . . . . . . . 25

Overcurrent protection

Activate / deactivate

. . . . . . . . . . . . . . . . . 68

From PC

. . . . . . . . . . . . . . . . . . 26

Manual

Functions description . . . . . . . . . . . . 22

Output off delay (shutdown delay)

. . . . . . . . . . . . . . . . . 65

From PC

Functions description . . . . . . . . . 23

Manual . . . . . . . . . . . . . . . . . . 26

Overvoltage protection

. . . . . . . . . . . . . . . . . . . . 69

From PC Functions description

Manual . . . . . . . . . . . . . . . . . . . . . 25

. . . . . . . . . . 83

. . . . . 60

. . . . . . . . . . . . . . . . 58

. . . . . . . . . . . . 51

. . . . . . . . . . 50

. . . . . . . . . 22

. . . . . . . . . . . . 51

. . . . . . . . . . 50

. . . . . . . . . . . . 22

Parallel device connection . . . . . . . . . . . . . 52

Query device identification . . . . . . . . . . . . . 61

Rounding off the displayed measured value . . 27

Self-test from PC . . . . . . . . . . . . . . . . . . 64

Sequence

Condensed instructions manual progr. Dwell time

Independent of memory location

From PC

Manual . . . . . . . . . . . . . 32

Memory location-specific

From PC Manual

Repetitions

From PC . . . . . . . . . . . . . . . . . 70

Manual

Sequence control

From PC Manual

Switching function via signal outputs

From PC Manual

Series device connection . . . . . . . . . . . . . . 55

Setpoint

Direct selection

Pre-selected setting . . . . . . . . . . . . . 21

Signal output

Set switching function

From PC

Manual . . . . . . . . . . . . . . . . . 31

Signal outputs

Definition

From PC Manual

Start address

From PC . . . . . . . . . . . . . . . . . . . . 72

. . . . . . . . . . . . . . . . . . . . . 32

Manual

Status and events management

Condition register query Delete event registers Device clear function

Enable register . . . . . . . . . . . . . . . . 66

Event register query Individual status query

Operation complete query . . . . . . . . . 62

Power-on status clear flag query

Service request . . . . . . . . . . . . . . . . 71

Status byte register query . . . . . . . . . 63

Wait to continue

Stop address

From PC . . . . . . . . . . . . . . . . . . . . 72

. . . . . . . . . . . . . . . . . . . . . 33

Manual

System messages, error messages . . . . . . . 89

. . . . . . . . . . . . 74

. . . . . . . . . . . . . 31

. . . . . . . . . . . . . . . . . 33

. . . . . . . . . . . . . . . . . 70

. . . . . . . . . . . . . . . . . 34

. . . . . . . . . . . . . . . . . 72

. . . . . . . . . . . . . . . . . 31

. . . . . . . . . . . . . . . . 20

. . . . . . . . . . . . . . . . . 72

. . . . . . . . . . . . . . . . . 71

. . . . . . . . . . . . . . . . . 29

. . . . . . . . . . . 64

. . . . . . . . . . . . 61

. . . . . . . . . . . . 65

. . . . . . . . . . . . . 65

. . . . . . . . . . . . 61

. . . . . . . . . . . . . . . 64

. 35

. . . . . 62

Technical Data . . . . . . . . . . . . . . . . . . . . . 8

Trigger input Trigger response

. . . . . . . . . . . . . . . . . . . . . 52

Edit

. . . . . . . . . . . . . . . . . 74

From PC

Manual . . . . . . . . . . . . . . . . . 28

Waiting time . . . . . . . . . . . . . . . . . . . . . 76

GMC-I Messtechnik GmbH 91

Edited in Germany • Subject to change without notice • A pdf version is available on the Internet

GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg •

Germany

Phone +49 911 8602-111 Fax +49 911 8602-777 E-Mail info@gossenmetrawatt.com www.gossenmetrawatt.com

9 Order Information

10 Repair and Replacement Parts Service,

Calibration Center* and Rental Service

Description (abbreviated name)

SSP-KONSTANTER 120-20 32 N 20 RU 10 P K320A*

SSP-KONSTANTER 120-40 32 N 40 RU 6 P K321A*

SSP-KONSTANTER 120-80 32 N 80 RU 3 P K322A*

SSP-KONSTANTER 240-20 32 N 20 RU 20 P K330A*

SSP-KONSTANTER 240-40 32 N 40 RU 12 P K331A*

SSP-KONSTANTER 240-80 32 N 80 RU 6 P K332A*

SSP-KONSTANTER 320-32 32 N 32 RU 18 P K334A*

IEEE 488 interface for SSP KONSTANTER types 32 N ...

* 115 V variant available with appendix -S001

Typ e Arti cle No .

K380A Weight: 172 g, Dimensions: 150 x 100 x 60 (L x W x H)

Mounting

Description Note Article No.

19" rack adapter, 1 x 32 N Required for mounting one type 32 N ...

device to a 19" rack Weight: 214 g (packed in plastic bag)

19" rack adapter, 2 x 32 N Required for mounting two type 32 N ...

device to a 19" rack Weight: 50 g (packed in plastic bag)

Mains jumper cable, 0.4 m The cable is equipped with a 10 A inlet

plug and a 10 A inlet socket. It is used for looping mains power through when several devices are mechanically combined into a multi-channel unit. In this way, the complete unit requires only one mains power cable. Weight: 102 g (packed in plastic bag)

RS 232 bus cable, 2 m For connecting a device to an RS 232

interface (extension cable with 9-pin socket and 9-pin plug connector). Weight: 232 g (packed in plastic bag)

K990A

K990B

K991A

GTZ3241000

R0001

If required please contact:

GMC-I Service GmbH Service Center Thomas-Mann-Str. 20 90471 Nürnberg

•

Germany Phone +49 911 817718-0 Fax +49 911 817718-253 E-Mail service@gossenmetrawatt.com www.gmci-service.com

This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.

* DAkkS Calibration Laboratory for Electrical Quantities

D-K-15080-01-01

Accredited quantities: direct voltage, direct current value, direct current resistance, alternating voltage, alternating current value, alternating current active power, alternating current apparent power, DC power, capacitance, frequency and temperature

accredited per DIN EN ISO/IEC 17025

Competent Partner

GMC-I Messtechnik GmbH

is certified in accordance with

DIN EN ISO 9001:2008. Our DAkkS calibration laboratory is accredited by the Deutsche

Akkreditierungsstelle GmbH (National accreditation body for the Federal Republic of Germany) in accordance with DIN EN ISO/IEC 17025 under registration number D-K-15080-01-01.

We offer a complete range of expertise in the field of metrology: from test reports and factory calibration certificates, right on up to DAkkS calibration certificates.

Our spectrum of offerings is rounded out with free test equipment management.

Our service department includes an on-site DAkkS calibration bench. If errors are discovered during calibration, our specialized personnel are capable of completing repairs using original replacement parts.

As a full service calibration lab, we can calibrate instruments from other manufacturers as well.

11 Product Support

If required please contact:

GMC-I Messtechnik GmbH

Product Support Hotline

Phone +49 911 8602-0 Fax +49 911 8602-709 E-Mail support@gossenmetrawatt.com

Gossen Metrawatt SSP 120-20, SSP 120-40, SSP 120-80, 32 N 20 RU 10 P, 32 N 40 RU 6 P User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Technical Description

1.1 Features and Range of Applications

1.2 Functions

1.3 Options and Accessories

1.4 Functional Principle

1.5 Technical Data

1.5.1 General Data

1.5.2 Mechanical Data

1.5.3 Electrical Data

2 Initial Start-Up

2.1 Preparing for Operation

2.1.1 Installing the IEEE 488 Interface Module

2.1.2 Installation to 19'' Device Racks

2.1.3 Combining Benchtop Devices

2.1.4 Connection to the Mains

2.1.5 Connecting Power Consumers

2.1.6 Connection to Computer Interfaces

2.2 Switching the Instrument On

3 Controls, Display Elements and Terminals

4 Manual Operation and Device Functions

4.1 Menu Structure

4.2 Setting Output Voltage and Output Current

4.2.1 Direct Selection (rotary knobs and scroll keys)

4.2.2 Pre-selected Setting (ENTER, scroll keys)

4.3 Switching the Power Output On and Off

Limiting the Allowable Working Range: Ulim, Ilim

4.5 Description of OVP and OCP Protection Functions

4.7 Operating Menu via the FUNCTION Key

4.7.1 SET – “Setup” Function Group

4.7.2 AnIF – “Analog Interface” Function Group

4.7.3 SEq – The Sequence Function Group

4.7.4 buS – The “Interface” Function Group

4.8 Settings with the <SELECT> Key

4.8.1 In the Basic Function

4.8.2 During a Sequence Run and with Step-by-Step Control

4.8.3 Display of Stored Data Upon Execution of <RCL>

4.8.4 Setting Resolution with the <SELECT> Key

4.9 Storing Data with the <SAVE> Key

4.9.1 Saving Basic Device Settings

4.9.2 Saving Data to a Memory Location

4.9.3 Clearing the Contents of a Defined Memory Range

4.9.4 Inserting a Memory Location

4.9.5 Deleting a Memory Location

4.9.6 Deleting the Contents of a Memory Location

4.10 Memory Recall with the <RCL> Key

4.10.1 Recall from SETUP Memory

4.10.2 Recall from SEQUENCE Memory

4.11 Disabling Front Panel Controls

4.12 <The ENTER> Key

4.13 The <CE/LOCAL> Key

4.15 Device RESET

4.16 Selecting Remote and Local Control Modes

5 Analog Interface

5.1 Connector Pin Assignments

5.2 Auto-Sensing Mode

5.3 Status Signal Outputs

5.4 Regulating Output Voltage

5.5 Regulating Output Current

5.6 Voltage Monitoring Output

5.7 Current Monitoring Output

5.8 Trigger Input

5.9 Parallel Connection

5.9.1 Direct Parallel Connection

5.9.2 Master-Slave Parallel Connection

5.10 Series Connection

5.10.1 Direct Series Connection

5.10.2 Master-Slave Series Connection

5.11 Varying the Internal Output Resistance Value

6 Operating Commands

6.1 Syntax

6.2 IEEE 488 Functions

6.3 Overview

6.4 Description

6.5 Status and Events Management

7.1 General Information and Definition of Terms

7.2 Adjusting Procedure