KEPCO BOP-MG/ME 1KW, BOP-MG 1KW, BOP-ME 1KW Operator's Manual

KEPCO®

THE POWER SUPPLIER™

OPERATOR’S MANUAL

BOP-MG/ME 1KW

HIGH POWER BIPOLAR POWER SUPPLY

KEPCO INC.

An ISO 9001 Company.

BOP-MG/ME 1KW

POWER SUPPLY

ORDER NO.

IMPORTANT NOTES:

1) This manual is valid for the following Firmware Versions:

FIRMWARE VERSION NOTE.

6.0 and higher

2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num­bers. Before using this Instruction Manual, check your equipment firmware version num­ber to identify your model. If in doubt, contact your nearest Kepco Representative, or the
Kepco Documentation Office in New York, [phone], requesting the correct revision
for your particular model and firmware version number.

3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.

Data subject to change without notice.

MODEL

©2019, KEPCO, INC
P/N 243-1027-r23

KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL [phone]  FAX [phone]

email: [e-mail]  World Wide Web: www.kepcopower.com

Conditions of Conformance

When this product is used in applications governed by the requirements of the EEC, the following restric­tions and conditions apply:

1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for “built in“ applications. Because it is incom­plete in construction, the end product enclosure must provide for compliance to any remaining electri­cal safety requirements and act as a fire enclosure. (EN61010-1 Cl. 6, Cl. 7, Cl.8, Cl. 9 and EN61010­1 annex F)

2. This power supply is designed for stationary installation, with mains power applied via a detachable
power supply cord or via direct wiring to the source power terminal block.

3. This power supply is considered a Class 1 (earthed) product, and as such depends upon proper con­nection to protective earth for sa fety from electric shock. (EN61010-1 Cl. 6.5.4)

4. This power supply is intended for use as part of equipment meant for test, measurement and labora­tory use, and is designed to operate from single phase, three wire power systems. This equipment
must be installed within a suitably wired equipment rack, utilizing a three wire (grounded) mains con­nection. See wiring section of this manual for complete electrical wiring instructions. (EN61010-1 Cl.

6.5.4 and Cl.6.10.1)

5. This power supply has secondary output circuits that are considered hazardous, and which exceed
100V d-c, able to deliver current greater than 10A d-c.

6. The output wiring terminals of this power supply have not been evaluated for field wiring and, there­fore, must be properly configured by the end product manufacturer prior to use.

7. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010-1 Cl.

9.6.2)

8. Hazardous voltages are present within this power supply during normal operation. All operator adjust­ments to the product are made via externally accessible switches, controls and signal lines as speci­fied within the product operating instructio ns . Th er e ar e no use r or ope ra to r se rvic ea ble parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.

228-1529 COND/CONFORM 091719 A

SAFETY INSTRUCTIONS

!

!

!

!

!

1. Installation, Operation and Service Precautions

This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation . The pr od­uct should never be operated with the cover removed unless equivalent protection of the operator from
accidental contact with hazardous internal voltages is provided:

There are no operator serviceable part s or adjustment s within the product enclosure.
Refer all servicing to trained service technician.

Source power must be removed from the product prior to performing any servicing.

This product is factory-wired for the nominal a-c mains voltage indicated on the rat­ing nameplate located adjacent to the source power conne ction on the product's rear
panel. To reconfigure the product input for other nominal mains voltages as listed
herein, the product must be modified by a trained service technician .

2. Grounding

This product is a Class 1 device which utilizes protective earthing to ensure operator safety.

The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con­nected prior to application of source power to the product (see instr uctions on instal­lation herein) in order to ensure safety from electric shock.

PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.

EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTH­ING TERMINAL.

CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.

3. Electric Shock Hazards

This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well a s common sense during use to preven t a ccidental
shock.

This symbol appears adjacent to any external terminals a t which ha zardous vo ltage
levels as high as 500V d-c may exist in the course of normal or single fault condi­tions.

This symbol appears adjacent to any external terminals a t which ha zardous vo ltage
levels in excess of 500V d-c may exist in the course of normal or single fault condi­tions.

B 091719

OPERATOR

WARNING

!

SAFETY INSTRUCTIONS

Read these safety instructions, as well as the applicable installation and operating instructions contained in
this manual before using the power supply.

Do not touch the output terminals. The output is dangerous. Electric shock can cause injury or death.
Do not remove the cover or disassemble the unit. There are no operator serviceable components or

adjustments inside the unit. High voltage components inside the unit can cause serious injury even with
input power disconnected.

Service must be referred to authorized personnel. Using the power supply in a manner not specified by
Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted
throughout this manual. The following table list s symbols used on the power su pply or in this manual where
applicable.

The liquid in the LCD is hazardous: do not lick or swallow. Wash skin and clothes immediately and thor­oughly upon exposure.

SAFETY SYMBOLS

SYMBOL Meaning

WARNING: RISK OF ELECTRIC SHOCK.
INDICATES THE POSSIBILITY OF BODILY INJURY OR DEATH.

CAUTION: REFER TO REFERENCED PROCEDURE.
INDICATES THE POSSIBILITY OF EQUIPMENT DAMAGE.

CAUTION

If this power supply is used in OEM equipment, the OEM equipment manufacturer is responsible for
attaching appropriate warning labels on the OEM equipment.

Operating the power supply outside the specified limits for input voltage, temperature, or other environ­mental conditions noted in this manual can damage the po wer supply and void the warranty.

DO NOT: wipe the front panel with hard materials, nor apply excessive force to the surface. DO NOT
expose to extended periods of bright sunshine or UV light.

Safety Messages

The BOP protection circuitry is designed to protect the load against unregulated high voltages and protect
the BOP from extensive damage in the event of a component failure. Refer to Table 1-2 for more informa­tion regarding the protection circuits.

OP-SAFETY 091719 C

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

2-14 WARNING: This feature requires disassembly and modification of the unit and imp le-

mentation is permitted only by authorized service personnel.

3-23

3-23

3-24

WARNING: For inductive loads, and especially superconducting magnet type loads,

the inherent offset of the BOP in the OFF state may generate significant
current in the circuit. Two properly rated external switches must be in­stalled for safety: one in series between the power supply and the mag­net, and the other in parallel with the magnet. Once the BOP front panel
display reads 0V, 0A, close the parallel switch, then open the series
switch before removing or installing connections betwee n BOP and load.
To restore normal operation, first close the series switch, then open the
parallel switch.

WARNING: For both inductive loads and constant-current-type active electronic

loads when the BOP output is set to OFF, a path is provided for absorbing
either the energy accumulated in the reac tance of the load during the ON
state, or energy delivered by an electronic load. This prevents d amage to
the load and power supply as well as providing safety for the user. How­ever, In addition to the built-in safety features, constant- current-type ac­tive electronic loads must be adjusted to zero and the BOP front panel
LCD must read 0V, minimum current, before handling the power supply­to-load connections.

WARNING: Accessing the BOP after the output is disabled in BATTERY mode is haz-

ardous because (1) high current arcing is possible and (2) either the ex­ternal battery voltage, or the voltage (±Voltage Protection max) on the
BOP output terminals may be dangerous. Therefor e, for bat tery an d con­stant-voltage-type active electronic loads it is recommended that two
properly rated external switches be installed for safet y: one in series with
the battery, and one across the BOP output. After the unit is set to OFF,
first open the switch in series with the battery, then close the switch
across the BOP output to ensure safety before handling BOP connec­tions. When connecting the battery, the switch across the output should
be opened after the connections are complete and then the switch in se­ries with the battery should be closed. If the constant-voltage-ty pe active
electronic load is adjusted to zero before handling the power supply-to­load connections, only the switch across the BOP output is required.

3-39

3-43

4-8

4-14

D BOP 1KW OPR 9/17/19

WARNING: Be sure that output power is OFF (Standby indicator lit) while conne cting

monitoring device. Be sure that connections are secure and that termi­nals are not inadvertently shorted.

WARNING: Dangerous voltages are present at the output terminals: Do not touch!

Disconnect load before running this test.

WARNING: The sense resistor will be dissipating full rated current of the BOP. If it is

hot to the touch, the sense resistor value, power rating and/or cooling are
incorrect; refer to PAR. 4.3 and Table 4-2.

WARNING: The sense resistor will be dissipating full rated current of the BOP. If it is

hot to the touch, the sense resistor value, power rating and/or cooling are
incorrect; refer to PAR. 4.4 and Table 4-2.

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

2-6 CAUTION: it is recommended that source power of external equip ment connected to

the Analog Port be applied through an isolating transformer To avoid
ground loops or possible damage to the BOP due to incorrect equipment
a-c wiring (e.g., defeating of ground connection).

2-8 CAUTION: The rack must provide support at the rear (within 6 inches of the rear pan-

2-8 CAUTION: When working with ac tive loads, the voltage or current of the active load

2-10 CAUTION: Never connect the both the load terminal tied to the BOP COM terminal

2-12 CAUTION: Never connect the load to the sense terminals. Monitoring instruments

2-12 CAUTION: Never connect the both the load terminal tied to the BOP COM terminal

2-12 CAUTION: The safety features incorporated into t he BOP to handle energy from Ac-

el). Optional slides can also be used (see PAR. 2.4.2).

must not exceed the maximum voltage or current rating of the BOP. Oth­erwise the overvoltage or overcurrent protection will shut down the pow­er supply.

and the programming device common to earth-ground. This allows a
ground loop current to flow within the BOP which will compromise accu­racy. Catastrophic damage to the BOP will result if the connection be­tween BOP COM and the load terminal connected to earth-gr ound is lost.

(e.g., DVM, etc.) are the only external equipment that may be safely con­nected to the sense terminals.

and the programming device common to earth-ground. This allows a
ground loop current to flow within the BOP which will compromise accu­racy. Catastrophic damage to the BOP will result if the connection be­tween BOP COM and the load terminal connected to earth-gr ound is lost.

tive loads are unable to protect the power supp ly or the load if input pow­er to the BOP is lost or if the BOP malfunctions. It is recommended that
the user monitor “Power OK” flag pins 3 and 4 of the external Protect Port
(see Table 2-4) and implement a fast-acting means of disconnecting ca­pacitive loads or crowbarring inductive loads to prevent damage to bo th
the BOP and the load in the event of input power loss.

2-15 CAUTION: To ensure correct operation, do not remove the GPIB cable from the BOP

after a Query is processed. Ensure that the last command is a non-query
such as *CLS before removing the GPIB cable. Otherwise, power to the
BOP and/or the host computer may need to be cycled OFF then ON to re­store proper operation.

2-21 CAUTION: For both parallel and series configurations , re move links b etwee n (COM

S) and (COM OUT) terminals of all slaves to prevent damage to the unit
and maintain system accuracy. Make sure to accurately f ollow Figures 2­11 through 2-14 for proper connection of the units.

2-28 CAUTION: The units are now configured as slave(s) to be controlled only by the

master. Do not use the slave keypad, RS 232 port or GPIB port to try to
control the slave(s). These ports are not disabled; commands to slave
can cause incorrect system operation. If OUTPut OFF is sent to a slave,
the master will automatically reenable the output. All responses to que­ries will have “#n” appended to the end, where n = slave number + 4. So
for example an *IDN? query to slave 1 will have #5 appended to the end
of the response:
KEPCO,BOP 20-50 AUG 10 2016,A123456,6.43#5

BOP 1KW OPR 9/17/19 E

LIST OF

WARNINGS AND CAUTIONS

PAGE WARNING/CAUTION

3-3 CAUTION: Pressing RESET will cause voltage transients to appear at the output

3-6 CAUTION: DO NOT repeatedly toggle the cir cuit breaker/switch as this may damage

3-15 CAUTION: When the ADJUST control is rotated, the active parameter is immediately

3-21 CAUTION: When working with active loads, always adjust the BOP prote ction limits

3-24 CAUTION: When working with battery mode, if the output is set to ON by *RST ( see

3-32 CAUTION: Before Pressing

3-42 CAUTION: Pressing RESET will cause voltage transients to appear at the output

which may damage a connected load.

the unit.

effective if the output is enabled (on = STANDBY indicator not lit). The
voltage/current applied to the load changes as the ADJUST contro l is ro­tated.

to be above the maximum values of voltage or current expected from the
load. For example, when the BOP is operating in voltage mode sinking
energy from a constant current type load, set the current protection limits
of the BOP above the maximum current expected from the lo a d.

PAR. 3.5.3.3) and the battery is char ge d abo v e 0. 01 V, th e uni t wil l sin k
105% of I

max.

O

@ to enter the Saved Waveform Screen from the power-

up screen, perform the following steps to avoid unexpected voltages or
currents from previous settings being briefly applied to the load when the
waveform is first executed.

which may damage a connected load. Switch is recessed to prevent inad­vertent activation.

3-55 CAUTION: The commands listed above with (**) will gen erate a “-440, Missing Que-

3-62 CAUTION: To ensure correct operat ion, do not remove the GPIB cable from the BOP

3-66 CAUTION: When the serial port has received an XOFF, the error message “-400 , Que-

4-5 CAUTION: Sending commands other than SYST:ERR? during calibration will ad-

4-11 CAUTION: If the CALIBRATE ZERO

ry” error if a query does not precede the comma nd in the same command
string or ;*OPC? does not follow the command. Although commands not
marked with (**) will not generate an error, all commands listed above re­quire verification to insure absolute success. Failure to follow these
rules can result in the loss of all stored constants and render the unit in­operative.

after a Query is processed. Ensure that the last command is a non-query
such as *CLS before removing the GPIB cable. Otherwise, power to the
BOP and/or the host computer may need to be cycled OFF then ON to re­store proper operation.

ry Error” will be placed in the queue to indicate the loss of transmitted in­formation due to a received XOFF character. When XON is received, the
unit will transmit all data in it's buffer followed by the exclamation char­acter (!). This (!) character is not part of any message from the BOP and
indicates the transmission buffer has been cleared and the BOP is idle.

versely affect calibration of the unit.

! function is available, perform this function

first, as it affects all other output calibrations.

F BOP 1KW OPR 9/17/19

TABLE OF CONTENTS

SECTION PAGE

SECTION 1 - INTRODUCTION

1.1 Scope of Manual ..................................................................................................................................... 1-1

1.2 General Description................................................................................................................................. 1-1

1.2.1 LXI Compatibility (ME Models).......................................................................................................... 1-2

1.3 Specifications.......................................................................................................................................... 1-2

1.4 Local Control........................................................................................................................................... 1-14

1.5 Remote Control....................................................................................................................................... 1-14

1.6 Features.................................................................................................................................................. 1-17

1.6.1 Digital Calibration............................................................................................................................... 1-17

1.6.2 voltage/current Protection.................................................................................................................. 1-17

1.6.3 Waveforms......................................................................................................................................... 1-17

1.6.4 Saving and Recalling Settings........................................................................................................... 1-17

1.6.5 External Reference (Analog Control)................................................................................................. 1-17

1.6.6 External Limits................................................................................................................................... 1-18

1.6.7 User-defined Voltage/Current Maximum Values (Software Limits)................................................... 1-18

1.6.8 Parallel and Series Configurations .................................................................................................... 1-18

1.6.9 Energy Recuperation......................................................................................................................... 1-18

1.7 Equipment Supplied................................................................................................................................ 1-18

1.8 Accessories............................................................................................................................................. 1-18

1.9 Safety...................................................................................................................................................... 1-20

SECTION 2 - INSTALLATION

2.1 Unpacking and Inspection....................................................................................................................... 2-1

2.2 Terminations and Controls...................................................................................................................... 2-1

2.3 Preliminary Operational Check................................................................................................................ 2-7

2.4 Installation............................................................................................................................................... 2-8

2.4.1 Rack Mounting................................................................................................................................... 2-8

2.4.2 Slide Installation................................................................................................................................. 2-8

2.5 Wiring Instructions................................................................................................................................... 2-8

2.5.1 Safety Grounding............................................................................................................................... 2-8

2.5.2 Source Power Connections............................................................................................................... 2-8

2.5.3 D-C Output Grounding....................................................................................................................... 2-9

2.5.3.1 Earth-Ground Configuration......................................................................................................... 2-10

2.5.3.2 Grounding Network Configuration................................................................................................ 2-10

2.5.4 Power Supply/Load Interface............................................................................................................. 2-10

2.5.5 Load Connection - General................................................................................................................ 2-12

2.5.6 Load Connection Using Local Sensing.............................................................................................. 2-12

2.5.7 Load Connection Using Remote Sensing.......................................................................................... 2-12

2.6 Cooling .................................................................................................................................................... 2-12

2.7 Setting up the unit ................................................................................................................................... 2-13

2.7.1 Consider the Load Type .................................................................................................................... 2-13

2.7.2 Setup for Local Operation.................................................................................................................. 2-13

2.7.3 Setup for Fail Safe/Interlock PROTECTION...................................................................................... 2-14

2.7.4 Setup for Remote Operation via GPIB (MG Models Only)................................................................ 2-15

2.7.5 Setup for Remote Operation via RS 232C......................................................................................... 2-15

2.7.6 Setup for Remote Operation via LAN (ME Models Only) .................................................................. 2-16

2.7.6.1 Finding Kepco Power Supplies on the LAN................................................................................. 2-16

2.7.6.2 Bonjour-enabled Discovery.......................................................................................................... 2-16

2.7.6.3 LXI Discovery............................................................................................................................... 2-17

2.7.6.4 Launch Web Interface ...................................................................................................

2.7.6.5 LAN Configuration Using Web Interface...................................................................................... 2-18

2.8 Multiple Unit Configurations (MG Models Only) ...................................................................................... 2-20

2.8.1 Multiple Unit Connections.................................................................................................................. 2-21

2.8.2 Multiple Unit Protection......................................................... ... ... ....................................................... 2-26

2.8.3 Multiple Unit Source Power ............................................................................................................... 2-26

2.8.4 Configuring Parallel, Series, 2 X 2 or 3 X 2 combinations................................................................. 2-27

............... 2-17

BOP-1K 091719 i

TABLE OF CONTENTS

SECTION PAGE

2.8.5 Powering up Series/Parallel Combinations....................................................................................... 2-28

2.8.6 Operating Instructions for Multiple Unit Combinations...................................................................... 2-32

2.8.7 Restoring a Unit to Standalone Operation ........................................................................................ 2-32

2.8.8 Changing Multiple Unit configurations .............................................................................................. 2-32

SECTION 3 - OPERATION

3.1 General...................................................... ....................................... ... ................................................... 3-1

3.2 Power Supply Basics.............................................................................................................................. 3-1

3.2.1 Keypad Description........................................................................................................................... 3-3

3.2.2 LCD and Power-up Screen Description............................................................................................ 3-4

3.2.3 Turning the Power Supply On........................................................................................................... 3-6

3.2.4 How to Access the menus ................................................................................................................ 3-7

3.2.4.1 How to Modify a Parameter......................................................................................................... 3-8

3.2.4.2 Password Setup.......................................................................................................................... 3-9

3.2.4.3 How to Access a Password Protected Menu.............................................................................. 3-10

3.2.5 Display Settings (Operator Convenience) Menu............................................................................... 3-11

3.2.5.1 Displaying Meters or Graph (Time line) ...................................................................................... 3-12

3.2.5.2 Adjusting LCD contrast and Background .................................................................................... 3-12

3.2.5.3 Waveform Stop ........................................................................................................................... 3-12

3.2.5.4 Enabling/Disabling Audible Beeps.............................................................................................. 3-12

3.3 Local Mode Operation ............................................................................................................................ 3-14

3.3.1 Setting Local Mode........................................................................................................................... 3-14

3.3.1.1 Keypad Lockout .......................................................................................................................... 3-14

3.3.1.2 Local Password Protection at Power-up..................................................................................... 3-14

3.3.2 Setting Voltage or Current Mode ...................................................................................................... 3-14

3.3.3 Programming Voltage or Current and Associated Protect Limits...................................................... 3-15

3.3.3.1 Selecting Bipolar/Independent Protection Limits........................................................................

3.3.3.2 Understanding Voltage and Current Protect Limits..................................................................... 3-18

3.3.3.3 Hidden Voltage and Current Protect Limits................................................................................. 3-18

3.3.4 Changing Maximum or Minimum Software-controlled Limits............................................................ 3-18

3.3.4.1 Changing Maximum Accepted Voltage or Current (Main Channel Software Limits)................... 3-20

3.3.4.2 Changing Maximum/Minimum Protection Software-controlled Limits ......................................... 3-21

3.3.4.3 External Limits............................................................................................................................. 3-22

3.3.5 Enabling/Disabling DC Output Power............................................................................................... 3-22

3.3.6 Using the Trigger Port to Customize Output On/Off Operation......................................................... 3-22

3.3.7 Determining How the Unit responds when Output is OFF (Load Type)............................................ 3-22

3.3.7.1 Battery Charging/Discharging using the BOP............................................................................. 3-25

3.3.7.1.1 Battery Operations using Voltage Mode.................................................................................3-25

3.3.7.1.2 Battery Operations using Current Mode.................................................................................3-25

3.3.8 Changing the Default Power up Settings.......................................................................................... 3-26

3.3.9 Storing/Recalling Power Supply Output Settings.............................................................................. 3-28

3.3.9.1 Understanding Abbreviations Used for Saved Settings .............................................................. 3-29

3.3.9.2 Viewing Saved Settings .............................................................................................................. 3-30

3.3.9.3 Saving Settings and Erasing or Modifying Previously Saved settings ........................................ 3-30

3.3.9.4 Copying Previously Saved settings to a New Location............................................................... 3-32

3.3.9.5 Applying Saved settings to the Output (Recall)....................................................... .................... 3-32

3.3.10 Waveform Generation ....................................................................................................................... 3-32

3.3.10.1 Protecting the Load When Accessing Waveforms...................................................................... 3-32

3.3.10.2 Waveform Overview.................................................................................................................... 3-32

3.3.10.3 Understanding How Waveforms Are Generated......................................................................... 3-33

3.3.10.4 Waveform Specifications............................................................................................................. 3-34

3.3.10.5 Viewing Stored Waveforms..............................................................................................

3.3.10.6 Creating a New Waveform.......................................................................................................... 3-35

3.3.10.7 Executing a Waveform................................................................................................................ 3-38

3.3.10.8 Modifying Previously Stored Waveforms .................................................................................... 3-39

3.3.10.9 Using Segments to Build a Waveform ........................................................................................ 3-40

. 3-17

........... 3-35

ii BOP-1K 091719

TABLE OF CONTENTS

SECTION PAGE

3.3.10.10 Copying a Waveform ................................................................................................................... 3-42

3.3.11 Reset................................................................................................................................................. 3-42

3.3.12 Operator Testing................................................................................................................................ 3-42

3.3.13 Error Message Explanations.............................................................................................................. 3-44

3.4 Analog Remote Mode Programming....................................................................................................... 3-45

3.4.1 Suppressing Noise at the Output....................................................................................................... 3-45

3.4.2 Remote Output off............................................................................................................................. 3-45

3.4.2.1 Remote Shutdown ....................................................................................................................... 3-46

3.4.2.2 Remote Standby.......................................................................................................................... 3-47

3.4.3 Voltage/Current Mode Control........................................................................................................... 3-48

3.4.4 Controlling the Output Using the BOP as a Power Amplifier............................................................. 3-48

3.4.4.1 Fixed Gain using External Reference Control.............................................................................. 3-49

3.4.4.2 Variable Gain Using External Reference Level.................................................... ........................ 3-50

3.4.5 External Protection Limits.................................................................................................................. 3-50

3.4.5.1 Using Both Local/Digital and External Protection Limits.............................................................. 3-51

3.4.6 Monitoring Output Current Using an analog signal............................................................................ 3-52

3.5 Digital Remote Mode Programming ........................................................................................................ 3-52

3.5.1 Operating Features Available only by Remote Commands.................................... ... ........................ 3-52

3.5.1.1 Measurement Capabilities ........................................................................................................... 3-52

3.5.1.2 Maximum Setpoint to Measurement Response........................................ .. ... .............................. 3-53

3.5.1.2.1 New or Modified Commands:..................................................................................................3-53

3.5.1.2.2 Power-up Defaults...................................................................................................................3-53

3.5.1.2.3 How to Implement MAXimum Setpoint to Measurement Specification...................................3-53

3.5.2 Programming Techniques to Optimize performance......................................................................... 3-54

3.5.2.1 Programming Voltage/Current Limit and Current/Voltage Limit................................................... 3-54

3.5.2.2 Making Sure the Previous Command is Complete...................................................................... 3-55

3.5.3 Remote Mode Setup.......................................................................................................................... 3-56

3.5.3.1 Determining Whether *RST Command sets the Output Off or On............................................... 3-57

3.5.3.2 GPIB Port Setup (MG Models ONLY).......................................................................................... 3-57

3.5.3.2.1 Changing the GPIB Address...................................................................................................3-58

3.5.3.2.2 Establish Communication Language.....................................................................................

3.5.3.2.3 Configure Device Clear (DCL) Control....................................................................................3-58

3.5.3.3 RS 232 Serial Port Setup............................................................................................................. 3-58

3.5.3.3.1 Select Baud Rate....................................................................................................................3-58

3.5.3.3.2 Configure XON/XOFF Protocol...............................................................................................3-58

3.5.3.3.3 Configure Prompt Mode..........................................................................................................3-59

3.5.3.4 LAN Interface Setup (ME Models Only)....................................................................................... 3-59

3.5.3.4.1 Set IP Address........................................................................................................................3-60

3.5.3.4.2 Change IP Address Mask. ......................................................................................................3-60

3.5.3.4.3 Configure Auto IP....................................................................................................................3-60

3.5.3.4.4 Configure DHCP .....................................................................................................................3-60

3.5.3.4.5 Configure Host Name..............................................................................................................3-60

3.5.3.4.6 Configure Index.......................................................................................................................3-61

3.5.3.5 BIT 4882 Compatibility................................................................................................................. 3-61

3.5.3.6 BIT 4886 Compatibility................................................................................................................. 3-61

3.5.3.6.1 LIST Command Differences in BIT 4886 ................................................................................3-61

3.5.3.6.2 Status Reporting Differences in BIT 4886...............................................................................3-61

3.5.3.6.3 Trigger Operation Differences in BIT 4886.............................................................................3-61

3.5.4 IEEE 488 (GPIB) Bus Protocol (MG Models Only)............................................................................ 3-62

3.5.5 BOP VISA Instrument driver.............................................................................................................. 3-63

3.5.6 RS232-C Operation........................................................................................................................... 3-64

3.5.6.1 Serial INterface............................................................................................................................ 3-64

3.5.6.2 RS 232 Implementation ............................................................................................................... 3-64

3.5.6.2.1 XON XOFF Method.................................................................................................................3-66

3.5.6.2.2 Echo Mode..............................................................................................................................3-66

3.5.6.2.3 Prompt Method........................................................................................................................3-67

3.5.6.3 Using SCPI commands for RS 232 Communication.................................................................... 3-67

..3-58

BOP-1K 091719 iii

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3.5.6.4 Isolating RS 232 Communication Problems................................................................................ 3-67

3.5.7 LAN Operation (ME Models Only).................................................................................................... 3-67

3.5.7.1 LAN Factory Defaults.................................................................................................................. 3-68

3.5.7.2 Remote Programming Using the Web Interface ......................................................................... 3-68

3.5.7.3 Troubleshooting LAN Communication Problems. ........................................ .. ............................. 3-68

3.5.7.4 Launch Web Interface................................................................................................................. 3-69

3.5.7.5 LAN Configuration Using Web Interface..................................................................................... 3-70

3.5.7.6 Operating The Unit Using Web Interface.................................................................................... 3-71

3.5.7.6.1 Changing the Output ..............................................................................................................3-72

3.5.7.6.2 Resetting the Unit (*RST).......................................................................................................3-73

3.5.7.6.3 Using a Waveform (User-Programmed Sequences).............................................................. 3-73

3.6 SCPI Programming................................................................... .............................................................. 3-74

3.6.1 SCPI Messages................................................................................................................................ 3-75

3.6.2 Common Commands/Queries .......................................................................................................... 3-75

3.6.3 SCPI Subsystem Command/Query Structure................................................................................... 3-75

3.6.3.1 ABORt Subsystem...................................................................................................................... 3-75

3.6.3.2 INITiate Subsystem..................................................................................................................... 3-75

3.6.3.3 LIST Subsystem.......................................................................................................................... 3-75

3.6.3.4 MEASure Subsystem.................................................................................................................. 3-77

3.6.3.5 OUTPut Subsystem .................................................................................................................... 3-77

3.6.3.6 MEMory Subsystem.................................................................................................................... 3-78

3.6.3.7 STATus Subsystem .................................................................................................................... 3-78

3.6.3.8 TRIGger subsystem.................................................................................................................... 3-78

3.6.3.9 [SOURce:]VOLTage and [SOURce:]CURRent Subsystems ...................................................... 3-78

3.6.3.10 CALibrate Subsystem ................................................................................................................. 3-79

3.6.3.11 System Subsystem ..................................................................................................................... 3-79

3.6.3.11.1 Forgotten Passwords .............................................................................................................3-79

3.6.4 Program Message Structure............................................................................................................. 3-79

3.6.4.1 Keyword...................................................................................................................................... 3-80

3.6.4.2 Keyword Separator ..................................................................................................................... 3-81

3.6.4.3 Query Indicator............................................................................................................................ 3-81

3.6.4.4 Data............................................................................................................................................. 3-81

3.6.4.5 Data Separator............................................................................................................................ 3-81

3.6.4.6 Message Unit Separator ............................................................................................................. 3-81

3.6.4.7 Root Specifier.............................................................................................................................. 3-81

3.6.4.8 Message Terminator................................................................................................................... 3-82

3.6.5 Understanding The Command Structure.......................................................................................... 3-82

3.6.6 Program Message Syntax Summary................................................................................................ 3-83

3.6.7 Status Reporting............................................................................................................................... 3-83

3.6.7.1 Status Reporting Structure.......................................................................................................... 3-84

3.6.7.2 Operational Status Register........................................................................................................ 3-84

3.6.7.3 QUEStionable Status Register.................................................................................................... 3-86

3.6.8 SCPI Program Examples.................................................................................................................. 3-86

SECTION 4 - CALIBRATION

4.1 General...................................................... ....................................... ... ................................................... 4-1

4.2 Test Equipment Requirements.................................................................................. ............................. 4-2

4.3 Calibration using Remote SCPI commands via GPIB or RS 232 Interface............................................ 4-4

4.3.1 Calibration Procedure using SCPI Commands................................................................................. 4-5

4.4 Calibration Using Front Panel Keypad in Local Mode ............................................................................ 4-10

4.4.1 Understanding the Calibration Process ............................................................................................ 4-10

4.4.2 Calibration Procedure using Local Mode.......................................................................................... 4-12

4.5 Calibration Storage............................................................. .......................................... .......................... 4-16

iv BOP-1K 091719

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SECTION PAGE

APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS

A.2 *CLS — Clear Status Command............................................................................................................ A-1

A.3 *ESE — Standard Event Status Enable Command ............................................................................... A-1

A.4 *ESE? — Standard Event Status Enable Query....................................................... ... .......................... A-2

A.5 *ESR? — Event Status Register Query ........................................................................................... ...... A-2

A.6 *IDN? — Identification Query................................................................................................................. A-2

A.7 *OPC — Operation Complete Command............................................................................................... A-2

A.8 *OPC? — Operation Complete Query.................................................................................................... A-3

A.9 *OPT? — Options Query....................................................................................................... ................. A-4

A.10 *RCL — Recall Command....................................................................................................... ............... A-4

A.11 *RST — Reset Command.......................................................................................................... ... ......... A-4

A.12 *SAV — Save Command ....................................................................................................................... A-5

A.13 *SRE — Service Request Enable Command......................................................................................... A-5

A.14 *SRE? — Service Request Enable Query.............................................................................................. A-5

A.15 *STB? — Status Byte Register Query.................................................................................................... A-5

A.16 *TRG — Trigger Command................................................................................................................... . A-6

A.17 *TST? — Self Test Query....................................................................................................................... A-6

A.18 *WAI — Wait-To-Continue Command.................................................................................................... A-6

APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS

B.1 Introduction................................................................................................................... ... ....................... B-1

B.2 Numerical Values................................................................................................................................... B-3

B.3 ABORt Command................................................................................................................................... B-3

B.4 CAL Commands and Queries ................................................................................................................ B-3

B.5 INITiate[:IMMediate] Command ............................................................................................................. B-3

B.6 INITiate:CONTinuous Command ........................................................................................................... B-4

B.7 INITiate:CONTinuous? Query................................................................................................................ B-4

B.8 MEASure? Query............................................................................................................... ... ................. B-5

B.9 MEASure:CURRent? Query................................................................................................................... B-5

B.10 MEASure:MODE Command................................................................................................................... B-5

B.11 MEASure:MODE? Query ....................................................................................................................... B-5

B.12 MEASure:RATE Command.................................................................................................................... B-5

B.13 MEASure:RATE? Query........................................................................................................ .. ... ............ B-6

B.14 MEASure

B.15 MEASure:TRANsient? QUERY.............................................................................................................. B-6

B.16 MEMory:LIST? QUERY.......................................................................................................................... B-6

B.17 MEMory:LOCation Command...................................................................................... ... ....................... B-6

B.18 MEMory:LOCation? Query..................................................................................................................... B-7

B.19 MEMory:PACK Command.................................... ....................................... ........................................ .. . B-8

B.20 MEMory:UPDate Command....................................... ............................................................................ B-8

B.21 OUTPut[:STATe] Command.............................................................................. ..................................... B-8

B.22 OUTPut[

B.23 OUTPut:CONTrol Command............................................................................................................ ... ... B-10

B.24 OUTPut:CONTrol? Query ..................................................... ....................................... .......................... B-11

B.25 OUTPut:MODE Command..................................................................................................................... B-11

B.26 OUTPut:MODE? Query.......................................................................................................................... B-11

B.27 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude]

B.28 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Query ................................................................ B-11

B.29 [SOURce:]CURRent[:LEVel]:LIMit[:BOTH] Command........................................................................... B-11

B.30 [SOURce:]CURRent[:LEVel]:LIMit[:BOTH]? Query ................................................................................ B-11

B.31 [SOURce:]CURRent[:LEVel]:LIMit:NEG Command............................................................................... B-12

B.32 [SOURce:]CURRent[:LEVel]:LIMit:NEG? Query.................................................................................... B-12

B.33 [SOURce:]CURRent[:LEVel]:LIMit:POS Command ............................................................................... B-12

B.34 [SOURce:]CURRent[:LEVel]:LIMit:POS? Query.................................................................................... B-12

:VOLTage? Query................................................................................................................... B-6

:STATe] Query......................................................................................................................... B-9

Command ............................... ... ... .................... B-11

BOP-1K 091719 v

TABLE OF CONTENTS

SECTION PAGE

B.35 [SOURce:]CURRent:MODE Command.................................................................................................. B-12

B.36 [SOURce:]CURRent:MODe? Query...................................... ... .............................................................. B-13

B.37 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] Command.............................................................. ... ... B-13

B.38 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] Query........................................................................... B-14

B.39 [SOURce:]CURRent[:LEVel]:PROTect:MODE Command ..................................................................... B-14

B.40 [SOURce:]CURRent[:LEVel]:PROTect:MODE? Query....................... ... ....................................... ......... B-14

B.41 [SOURce:]CURRent[:LEVel]:PROTect:NeGative Command................................................................. B-14

B.42 [SOURce:]CURRent[:LEVel]:PROTect:NeGative? Query................................................................... ... B-14

B.43 [SOURce:]CURRent[:LEVel]:PROTect:POSitive Command .................................................................. B-14

B.44 [SOURce:]CURRent[:LEVel]:PROTect:POSitive?

B.45 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH] Command ......................... ... ............................... B-15

B.46 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH]? Query................................................................ B-15

B.47 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:NeGative Command ........................................................ B-15

B.48 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:NeGative? Query............................................................. B-15

B.49 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:POSitive Command ......................................................... B-15

B.50 [SOURce:]CURRent[:LEVel]:PROTect:LIMit:POSitive? Query.............................................................. B-15

B.51 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude] Command........................................................... B-16

B.52 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude]? Query........................... ..................................... B-16

B.53 [SOURce:]FUNCtion:MODE Command ................................................................................................. B-16

B.54 [SOURce:]FUNCtion:MODE? Query...................................................................................................... B-16

B.55 [SOURce:]FUNCtion:MODE:TRIGger

B.56 [SOURce:]FUNCtion:MODE:TRIGger? Query ....................................................................................... B-16

B.57 [SOURce:]LIST:CLEar Command................................... ... .......................................... .......................... B-16

B.58 [SOURce:]LIST:COPY Command................................. ................................................................... ... ... B-17

B.59 [SOURce:]LIST:COUNt

B.60 [SOURce:]LIST:COUNt? Query......................... ... .................................................................................. B-18

B.61 [SOURce:]LIST:COUNt:SKIP Command............................ .......................................... .......................... B-18

B.62 [SOURce:]LIST:COUNt:SKIP? Query.................................................... ................................................ B-19

B.63 [SOURce:]LIST:CURRent Command..................................................................................................... B-20

B.64 [SOURce:]LIST:CURRent? Query.......................................................................................................... B-20

B.65 [SOURce:]LIST:CURR:APPLy Command.............................................................................................. B-20

B.66 [SOURce:]LIST:CURRent:APPLy:SWEep Command............................................................................ B-20

B.67 [SOURce:]LIST:CURRent:APPLy:SWEep?

B.68 [SOURce:]LIST:CURRent:POINts? Query ............................................................................................. B-21

B.69 [SOURce:]LIST:DIRectory? Query............................. .......................................... ............................ ... ... B-21

B.70 [SOURce:]LIST:DIVider Command........................................................................................................ B-21

B.71 [SOURce:]LIST:DIVider? Query................................................................ .. ........................................... B-21

B.72 [SOURce:]LIST:DWELl Command................................ .......................................... ............................ ... B-21

B.73 [SOURce:]LIST:DWELl? Query.............................................................................................................. B-22

B.74 [SOURce:]LIST:DWELl:POINts? Query................................................................................................. B-22

B.75 [SOURce:]LIST:ERASe Command....................... .................................................................................. B-22

B.76 [SOURce:]LIST:QUERy Command.................................... ... .......................................... ....................... B-22

B.77 [SOURce:]LIST:QUERy? Query............................................ ... ... ........................................................... B-22

B.78 [SOURce:]LIST:RECall Command................................................................................................ ... ... ... B-22

B.79 [SOURce:]LIST:REPeat Command................................. ........................................ .. ............................. B-22

B.80 [SOURce:]LIST:RESolution? Query............................................................ ... ... ............................... ...... B-23

B.81 [SOURce:]LIST:SAMPle:CURRent Command..................................................... .................................. B-23

B.82 [SOURce:]LIST:SAMPle

B.83 [SOURce:]LIST:SAMPle? Query................................ ... .......................................... ............................... B-26

B.84 [SOURce:]LIST:SEGMent Command............................................... .......................................... ............ B-26

B.85 [SOURce:]LIST:SEGMent? Query.......................................................................................................... B-26

B.86 [SOURce:]LIST:SET:SAMPle Command.......................................................... ..................................... B-26

B.87 [SOURce:]LIST:SET:SAMPle? Query....................................................................... ............................. B-26

B.88 [SOURce:]LIST:SAVE Command........................................................................................................ ... B-26

B.89 [SOURce:]LIST:SET:TRIGger Command.................................................... ... ... ............................... ...... B-27

B.90 [SOURce:]LIST:SET:TRIGger?

B.91 [SOURce:]LIST:SET:WAIT Command................................................................................................... B-27

Command................................................ ........................................ .. ............... B-17

:VOLTage Command.......................................... .. ........................................... B-23

Command .................................. ... ....................................... ... ... B-16

QUERY............................................................................................. ... B-27

Query........................................................ ............... B-14

Query ................................................................................ B-20

vi BOP-1K 091719

TABLE OF CONTENTS

SECTION PAGE

B.92 [SOURce:]LIST:SET:WAIT? QUERY..................................................................................................... B-27

B.93 [SOURce:]LIST:TRIGger Command..................................................................................................... . B-27

B.94 [SOURce:]LIST:VOLTage Command......................................................................................... ... ... ...... B-28

B.95 [SOURce:]LIST

B.96 [SOURce:]LIST:VOLTage:APPLy Command......................................................................................... B-28

B.97 [SOURce:]LIST:VOLTage:APPLy:SWEep Command............................................................................ B-28

B.98 [SOURce:]LIST

B.99 [SOURce:]LIST:VOLTage:POINts? Query............................................................................................. B-29

B.100 [SOURce:]LIST:WAIT:HIGH Command................................................................................................. B-29

B.101 [SOURce:]LIST:WAIT:LEDGe Command.............................................................................................. B-29

B.102 [SOURce:]LIST:WAIT:LOW Command.................................................................................................. B-30

B.103 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude] Command.......................................................... B-31

B.104 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? Query.............................................................. B-31

B.105 [SOURce:]VOLTage[:LEVel]:LIMit[:BOTH] Command........................................................................... B-31

B.106 [SOURce:]VOLTage[:LEVel]:LIMit[:BOTH]? Query................................................................................ B-31

B.107 [SOURce:]VOLTage[:LEVel]:LIMit:NeGative Command........................................................................ B-31

B.108 [SOURce:]VOLTage[:LEVel]:LIMit:NeGative? Query............................................................................. B-31

B.109 [SOURce:]VOLTage[:LEVel]:LIMit:POSitive Command......................................................................... B-31

B.110 [SOURce:]VOLTage[:LEVel]:LIMit:POSitive? Query.............................................................................. B-32

B.111 [SOURce:]VOLTage:MODe Command.................................................................................................. B-32

B.112 [SOURce:]VOLTage:MODE? Query...................................................................................................... B-32

B.113 [SOURce:]VOLTage[:LEVel]:PROTect:BOTH Command...................................................................... B-32

B.114 [SOURce:]VOLTage[:LEVel]:PROTect[:BOTH]? Query......................................................................... B-33

B.115 [SOURce:]VOLTage[:LEVel]:PROTect:MODE Command..................................................................... B-33

B.116 [SOURce:]VOLTage[:LEVel]:PROTect:MODE? Query.......................................................................... B-33

B.117 [SOURce:]VOLTage[:LEVel]:PROTect:NeGative Command................................................................. B-33

B.118 [SOURce:]VOLTage[:LEVel]:PROTect:NeGative? Query................................................................ ... ... B-33

B.119 [SOURce:]VOLTage[:LEVel]:PROTect:POSitive Command.................................................................. B-34

B.120 [SOURce:]VOLTage[:LEVel]:PROTect:POSitive? Query....................................................................... B-34

B.121 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:BOTH Command................................................. ............ B-34

B.122 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit[:BOTH]? Query................................................................ B-34

B.123 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NeGative Command........................................................ B-34

B.124 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NeGative? Query............................................................. B-34

B.125 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive Command......................................................... B-34

B.126 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive? Query.............................................................. B-35

B.127 [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude] Command........................................................... B-35

B.128 [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude]? Query............................................................... B-35

B.129 STATus:OPERation:CONDition? Query................................................................................................. B-35

B.130 STATus:OPERation:ENABle Command................................................................................................ B-35

B.131 STATus:OPERation:ENABle? Query..................................................................................................... B-35

B.132 STATus:OPERation[:EVENti

B.133 STATus:PRESet Command................................................................................................................... B-36

B.134 STATus:QUEStionable[:EVENt]? Query................................................................................................ B-36

B.135 STATus:QUEStionable:CONDition? Query............................................................................................ B-36

B.136 STATus:QUEStionable:ENABle Command............................................................................................ B-36

B.137 STATus:QUEStionable:ENABle? Query ................................................................................................ B-37

B.138 SYSTem:BEEP Command..................................................................................................................... B-38

B.139 SYSTem:COMMunication:GPIB:ADDRess Command.......................................................................... B-38

B.140 SYSTem:COMMunication:GPIB:ADDRess? Query............................................. .................................. B-38

B.141 SYSTem:COMMunication:LAN:AUTO Command.................................................................................. B-38

B.142 SYSTem:COMMunication:LAN:AUTO? Query....................................................................................... B-38

B.143 SYSTem:COMMunication:LAN:DHCP Command.................................................................................. B-38

B.144 SYSTem:COMMunication:LAN:DHCP? Query ...................................................................................... B-38

B.145 SYSTem:COMMunication:LAN:IP Command........................................................................................ B-38

B.146 SYSTem:COMMunication:LAN:IP? Query............................................................................................. B-39

B.147 SYSTem:COMMunication:LAN:MAC? Query......................................................................................... B-39

B.148 SYSTem:COMMunication:LAN:MASK Command................................................ .. ................................ B-39

:VOLTage? Query.......................................................................................................... B-28

:VOLTage:APPLy:SWEep? Query................................................................................. B-28

] Query...................................................................................................... B-36

BOP-1K 091719 vii

TABLE OF CONTENTS

SECTION PAGE

B.149 SYSTem:COMMunication:LAN:MASK? Query....................................................................................... B-39

B.150 SYSTem:COMMunication:LAN:LRST Command................................................................................... B-39

B.151 SYSTem:COMMunication:SERial:BAUD Command.............................................................................. B-39

B.152 SYSTem:COMMunication:SERial:BAUD? Query................................................................................... B-39

B.153 SYSTem:COMMunication:SERial:ECHO Command.............................................................................. B-40

B.154 SYSTem:COMMunication:SERial:ECHO? Query .................................................................................. B-40

B.155 SYSTem:COMMunication:SERial:PACE Command.............................................................................. B-40

B.156 SYSTem:COMMunication:SERial:PACE? Query................................................................................... B-40

B.157 SYSTem:COMMunication:SERial:PROMpt CommanD.......................................................................... B-40

B.158 SYSTem:COMMunication:SERial:PROMpt? Query............................................................................... B-40

B.159 SYSTem:ERRor? Query......................................................................................................................... B-40

B.160 SYSTem:ERRor:CODE? Query .................................................................................................

B.161 SYSTem:ERRor:CODE:ALL? Query...................................................................................................... B-41

B.162 SYSTem:KEYBoard Command.............................................................................................................. B-41

B.163 SYSTem:KEYBoard? Query.......................................................................................................... ... ...... B-41

B.164 SYSTem:MDNS? Query......................................................................................................................... B-41

B.165 SYSTem:MDNS:INDex Command......................................................................................................... B-41

B.166 SYSTem:MDNS:IND? Query.................................................................................................................. B-41

B.167 SYSTem:MDNS:NAME Command......................................................................................................... B-41

B.168 SYSTem:MDNS:NAME? Query.............................................................................................................. B-42

B.169 SYSTem:MODE Command.................................................................................................................... B-42

B.170 SYSTem:MODE? Query......................................................................................................................... B-42

B.171 SYSTem:PASSword:CENable Command..........................................................................................

B.172 SYSTem:PASSword:CDISable Command............................................................................................. B-42

B.173 SYSTem:PASSword:NEW Command.................................................................................................... B-42

B.174 SYSTem:PASSword:STATe? Query...................................................................................................... B-42

B.175 SYSTem:REMote

B.176 SYSTem:REMote? Query........................................................................................................... ... ... ...... B-43

B.177 SYSTem:SECurity:IMMediate Command............................................................................................... B-43

B.178 SYSTem:SET Command........................................................................................................................ B-43

B.179 SYSTem:SET? Query................................................................................................................. ............ B-43

B.180 SYSTem:VERSion? Query..................................................................................................................... B-44

B.181 TRIGger:SOURce Command................................................................................................................. B-44

B.182 TRIGger:SOURce? Query................................................................................................................... ... B-44

Command......................................................... ... ....................................... ... ... ......... B-42

............ B-41

.... B-42

viii BOP-1K 091719

LIST OF FIGURES

FIGURE TITLE PAGE

1-1 High Power BOP Series Power Supply ....................................................................................................... xii

1-2 1000W BOP Power Supply, Outline Drawing ............................................................................................. 1-15

1-3 BOP Output Characteristics.................................. ... ................................................................................... 1-21

2-1 BOP Series Rear Panel ............................................................... .. ............................................................. 2-1

2-2 Earth Ground Connection Recommendations ............................................................................................ 2-11

2-3 Load Connections, Local Sensing ...................................... ... ... .......................................... ... ..................... 2-13

2-4 Load Connections, Remote Sensing ............................... ... ... .......................................... ........................... 2-14

2-5 Fail Safe Feature, Simplified Schematic Diagram....................................................................................... 2-15

2-6 PS Find Screen........................................................................................................................................... 2-16

2-7 Discovery using Safari Browser with Bonjour Installed............................................................................... 2-17

2-8 Typical screen Using LXI Discovery Tool.................................................................................................... 2-17

2-9 Web Interface Home Page (Unit Description)............................................................................................. 2-18

2-10 Web Interface Configure LAN Page............................................................................................................ 2-19

2-11 Parallel Configuration, Local Sensing, Typical............................................................................................ 2-22

2-12 Parallel Configuration, Remote Sensing, Typical ........................................................................................ 2-23

2-13 Series Configuration, Local Sensing, Typical ............................................................................................. 2-24

2-14 Series Configuration, Remote Sensing, Typical................................ ... ... .................................................... 2-25

2-15 Typical Master/Slave Protection Interconnections ...................................................................................... 2-26

2-16 Master Power Up Screen............................................................................................................................ 2-30

2-17 Power On Default Screen for Master Unit................................................................................................... 2-31

2-18 Power On Default Screen for Slave Unit..................................................................................................... 2-31

2-19 3 x 2 (3 Series X 2 Parallel) Configuration, Local Sensing, Typical............................................................ 2-33

3-1 BOP Series Front Panel.............................................................................................................................. 3-2

3-2 Front Panel Keypad ................................................................................................................................... 3-3

3-3 Start-up Screen................................................ ........................................................................................... 3-4

3-4 Power-up Screen Showing Graphic Meters................................................................................................ 3-5

3-5 Power-up Screen Showing Time Line Graph.............................................................................................. 3-5

3-6 Password Protection Menu, Factory Defaults............................................................................................. 3-11

3-7 Display Settings Menu......................................................................................................

3-8 General Setup Menu................................................................................................................................... 3-17

3-9 Max/Min Settings Menu .............................................................................................................................. 3-21

3-10 Saved Setups Menu.................................................................................................................................... 3-31

3-11 Saved Waveforms Menu............................................................................................................................. 3-33

3-12 Edit Waveform Menu ....................................... .......................................... ................................................. 3-35

3-13 New Waveform Menu ................................................................................................................................. 3-36

3-14 Sample Waveform .................................. .................................................................................................... 3-40

3-15 Remote Shutdown Using External Power, for Standalone or Multiple units ............................... ................ 3-46

3-16 Remote Shutdown Using Internal Power, for Standalone Units.................................................................. 3-46

3-17 Remote Shutdown Combined with Cable-disconnect Shutdown, for Standalone or Multiple Units,........... 3-47

3-18 Remote Shutdown Using Internal Power, for Multiple Units, ...................................................................... 3-47

3-19 Remote Standby, Standalone or Multiple Units .......................................................................................... 3-47

3-20 Programming Example to Verify Previous Command has Completed........................................................ 3-56

3-21 RS 232 Implementation ........................................ ... .......................................... ......................................... 3-65

3-22 Web Interface Home Page (Unit Description)............................................................................................. 3-70

3-23 Web Interface Configure LAN Page............................................................................................................ 3-71

3-24 Web Interface Operate Instrument Page.................................................................................................... 3-72

3-25 Reset Dialog Box ........................................................................................................................................ 3-73

3-26 Waveform Dialog Box................................................................................................................................. 3-74

3-27 Tree Diagram of SCPI Commands Used with BOP Power Supply...................................................... ....... 3-76

3-28 Message Structure..................................... ... .............................................................................................. 3-80

3-29 Status Reporting Structure.......................................................................................................................... 3-85

3-30 Typical Example Of BOP Power Supply Program Using SCPI Commands ............................................... 3-87

4-1 Calibration Setup for Voltage Mode............................................................................................................ 4-5

4-2 Calibration Setup for Current Mode............................................................................................................ 4-8

4-3 Main Calibration Screen............................................................ ... .. ............................................................. 4-11

A-1 GPIB Commands............................................................. ... ... ....................................... ... .......................... A-3

.......................... 3-11

BOP-1K 091719

ix

LIST OF FIGURES

FIGURE TITLE PAGE

B-1 Programming the Output............................................................................................................................ B-4

B-2 Using MEMory LOCation Commands and Queries.................................................................................... B-8

B-3 Using List Commands to measure sample at End of Pulse ....................................................................... B-9

B-4 Using List Commands to measure sample at Start of Pulse...................................................................... B-10

B-5 Setting Limits............................................................ ....................................... ... ........................................ B-13

B-6 Using LIST Commands and Queries.......................................................................................................... B-17

B-7 Creating and Executing a complex Waveform Using LIST Commands..................................................... B-19

B-8 Using List:WAIT Commands to Control Generation of a Waveform Measured by

Multiple External Devices using a Single External Pulse ........................................................................ B-24

B-9 Using List:WAIT Commands to allow an external device time to

function while imposing a maximum wait time......................................................................................... B-25

B-10 Using List:WAIT Commands to Control Generation of a Waveform Measured

by Multiple External Devices using the Low-Going leading Edge of an External Pulse ......................... B-30

B-11 Using PROT:LIM:POS and PROT:LIM:POS Commands to Set Asymmetrical Limits............................... B-33

B-12 Using Status Commands and Queries......................................................................................... .. ............ B-37

B-13 Setting the Unit to Remote Mode via Serial (RS 232) Port ........................................................................ B-43

B-14 Using System Commands and Queries..................................................................................................... B-44

x BOP-1K 091719

LIST OF TABLES

TABLE TITLE PAGE

1-1 BOP 1000 Watt Model Parameters .............................................................................................................1-2

1-2 BOP General Specifications .......................................................................................................................1-3

1-3 Equipment Supplied ....................................................................................................................................1-18

1-4 Accessories .................................................................................................................................................1-19

1-5 Safety Symbols ...........................................................................................................................................1-20

2-1 Rear Panel Connector Functions ................................................................................................................2-2

2-2 IEEE 1118 Connector Input/Output Pin Assignments .................................................................................2-3

2-3 Trigger Port Pin Assignments .....................................................................................................................2-3

2-4 External Protection Connector Input/Output Pin Assignments .................................. ... ...............................2-4

2-5 RS232C PORT Input/Output Pin Assignments ...........................................................................................2-4

2-6 Parallel/Serial Control Out Port Pin Assignments .......................................................................................2-4

2-7 Parallel/Serial Control In Port Pin Assignments ..........................................................................................2-5

2-8 Parallel/Serial Protect In Port Pin Assignments ..........................................................................................2-5

2-9 Parallel/Serial Protect Out Port Pin Assignments .......................................................................................2-5

2-10 Analog I/O Port Input/Output Pin Assignments ...........................................................................................2-6

2-11 IEEE 488 Port Input/Output Pin Assignments .............................................................................................2-7

2-12 Multiple Units Menu Functions ....................................................................................................................2-27

2-13 Slave Status Message Definitions ..............................................................................................................2-30

3-1 Front Panel Controls and Indicators ...........................................................................................................3-2

3-2 Special Key Functions ................................................................................................................................3-3

3-3 Display Settings (Operator Convenience) Menu ................................................................ ... ... ...................3-13

3-4 Voltage and Current Parameter Definitions ................................................................................................3-16

3-5 Max/Min Settings Menu ..............................................................................................................................3-19

3-6 Power Supply Behavior when Output is set to OFF ....................................................................................3-23

3-7 Power Up Settings menu ............................................................................................................................3-27

3-8 Examples Showing How Power-up Settings Function ................................................................................3-28

3-9 Save/recall menu ........................................................................................................................................3-30

3-10 Sine, Triangle and Ramp Waveform Frequency vs. Points ........................................................................3-34

3-11 Square Waveform Frequency vs. Points ....................................................................................................3-34

3-12 Waveform Segment Details Menu ..............................................................................................................3-37

3-13 New Waveform Settings Menu ...................................................................................................................3-38

3-14 Revisions/test Menu ....................................................................................................................................3-43

3-15 Error Message Explanations .......................................................................................................................3-44

3-16 Analog Remote Setup Menu .......................................................................................................................3-48

3-17 Interface Settings Menu ..............................................................................................................................3-57

3-18 LAN Interface Settings Menu ......................................................................................................................3-59

3-19 IEEE 488 (GPIB) Bus Interface Functions ..................................................................................................3-62

3-20 IEEE 488 (GPIB) Bus Command Mode Messages .....................................................................................3-62

3-21 IEEE 488 (GPIB) Bus Data Mode Messages ..............................................................................................3-63

3-22 Rules Governing Shortform Keywords ........................................................................................................3-80

4-1 Calibration Summary ..................................................................................................................................4-1

4-2 Suggested Sense Resistors ........................................................................................................................4-3

4-3 Voltage Calibration Measurements and Tolerances ...................................................................................4-3

4-4 Current Calibration Measurements and Tolerances ...................................................................................4-4

4-5 Calibration Storage .....................................................................................................................................4-16

A-1 IEEE 488.2 Command/query Index ...........................................................................................................A-1

A-2 Standard Event Status Enable Register and Standard Event Status Register Bits ...................................A-1

A-3 Service Request Enable and Status Byte Register Bits .............................................................................A-5

A-4 Built-in test Error Codes .............................................................................................................................A-6

B-1 SCPI Subsystem Command/query Index ..................................................................................................B-1

B-2 MEAS? Query Status Byte Register Bits ...................................................................................................B-5

B-3 List Data Table ................................................ ...........................................................................................B-20

B-4 Operation Condition Register, Operation Enable Register,

and Operation Event Register Bits ........................................................... ... ............................................B-35

B-5 Questionable Event Register, Questionable Condition Register

and Questionable Condition Enable Register Bits ..................................................................................B-36

B-6 Error Messages ..........................................................................................................................................B-44

BOP-1K 091719 xi

FIGURE 1-1. HIGH POWER BOP SERIES POWER SUPPLY

xii BOP-1K 091719

1.1 SCOPE OF MANUAL

This manual contains instructions for the installation, operation and servicing of the BOP series
of 1000 Watt rack-mounted, 4-quadrant bipolar, programmable, voltage and current stabilized d­c power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A. This manual applies
to both MG models with a GPIB digital interface and ME models with a LAN digital interface.

NOTE:This manual does not apply to units with Firmware Rev less than 6.0.

1.2 GENERAL DESCRIPTION

The BOP Series (Figure 1-1), hereafter referred to as BOP, are true 4-quadrant programmable
voltage and current power supplies, meaning they are capable of both sourcing and sinking
power. These bipolar power supplies pass smoothly through zero without switching to provide
true ± voltage and ± current. These BOP power supp lies use switch mode technology for low
dissipation. A bi-directional, isolating, a-c input power factor correcting (PFC) circuit recuperates
energy sinked from an active load and sends it back into the line to maintain low dissipation.

The BOP operates in either VOLTAGE mode or CURRENT mode. When in Voltage mode, the
power supply will (within the configured and rated limits) provide the programmed output volt­age. Current is determined by the load, and cannot exceed the Current Protect limits. When in
Current mode, the power supply will (within the configured and rated limits) provide the pro­grammed output current. Voltage is determined by the load, a nd cannot exceed the Voltage Pro­tect limits. Figure 1-3 defines the operating limits in each mode.

SECTION 1 - INTRODUCTION

These BOP power supplies are controlled digitally from a menu-driven front-panel keypad or
one of the standard remote digital interfaces (GPIB or RS 232 for MG m odels, or LAN o r RS 232
for ME models) to set voltage and current and the four protection limits (+voltage, –voltage,
+current and –current.) A front panel rotary adjuster all ows real- time a djustment of the output. A
large color LCD displays the settings, mode and the actual output voltage and current. Addition­ally, these BOP models can be remotely controlled by an analog ±10V input for the main chan­nel (voltage or current), and a +1 to +10V input for the limit channels.

BOP models are suitable for driving inductive loads such as large magnets or motors, and for
exercising batteries. They are also suitable for characterizing solar cell arrays, and powering
many electrochemical reactions.

BOP HIPWR 091719 1-1

1.2.1 LXI COMPATIBILITY (ME MODELS)

BOP with the ME suffix are designed to meet the LXI Version 1.4 standard, providing the follow­ing standardized web interface capabilities for the user:

Discovery:

- MDNS (Bonjour - like the printer discovery)

- VXI-11 (National Instruments Ni Max, Agilent Io controller)

IP address support:

- DHCP

- AUTOIP

- Static IP (using Web Page)

Connections:

- SOCKET @ port 5025

- TELNET @ port 5024

Connection throughput:

- 25 milliseconds

NOTE: VXI-11 socket connection is provided for discovery. It only supports the *idn? query in

operation. Consult factory if this slow connection is required.

1.3 SPECIFICATIONS

Ta ble 1-1 below indicates parameters that vary for different 1000 Watt BOP models; Table 1-2
lists general specifications that apply to all 1000 Watt BOP models.

TABLE 1-1. BOP 1000 WATT MODEL PARAMETERS

d-c Output Range Closed Loop Gain Output Impedance

Model

1000 WATT MODELS

BOP 6-125MG/ME 0 to ±6 0 to ±125 0.6 12.5 0.05 1.5 24 1150

BOP 10-100MG/ME 0 to ±10 0 to ±100 1.0 10.0 0.1 2.0 50 1100

BOP 10-75MG/ME 0 to ±10 0 to ±75 1.0 7.5 0.13 2.0 67 976
BOP 20-50MG/ME 0 to ±20 0 to ±50 2.0 5.0 0.40 8.3 200 371
BOP 25-40MG/ME 0 to ±25 0 to ±40 2.5 4.0 0.63 15.8 313 165
BOP 36-28MG/ME 0 to ±36 0 to ±28 3.6 2.8 1.30 25 640 103
BOP 50-20MG/ME 0 to ±50 0 to ±20 5.0 2.0 2.50 50 1250 55
BOP 72-14MG/ME 0 to ±72 0 to ±14 7.2 1.4 5.14 104 2570 33

BOP 100-10MG/ME 0 to ±100 0 to ±10 10.0 1.0 10.0 163 5000 16

NOTE: When connecting active loads, the steady-state voltage of the active load must not exceed the maximum voltage rating of the

BOP. Otherwise the overvoltage protection will shut down the power supply.

Voltage

(V d-c)

Current

(A d-c)

Voltage

Channel

(V/V)

G

V

Current

Channel

GI (A/V)

Voltage Mode

(Series R - L)

R

d-c

(mOhms)

L

(H)

Current Mode

(Parallel R - C)

R

d-c

(Ohms)

C

(F)

1-2 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS

SPECIFICATION RATING/DESCRIPTION CONDITION

INPUT CHARACTERISTICS

a-c voltage nominal 200/220/230/240Va-c

(200-240 Va-c)

range 176 - 264 Va-c Continuous; Input voltage outside range

Frequency nominal 50/60 Hz

range 47 - 63 Hz

Current 176 Va-c 9.5A (7.5A

264 Va-c 6.4A (4.4A

Power factor Source 0.99 minimum

Sink 0.97 minimum
Efficiency 65% (56%
Switching frequency, front end module 70 KHz ±5% (50KHz ±5%

EMC Compliance EN61326-1 (1997) Class A equipment
EMC immunity to: ESD EN61000-4-2 Electrostatic discharge

Radiated RF EN61000-4-3

EFT EN61000-4-4 Electrical fast transient/burst

Surges EN61000-4-5

Conducted RF EN61000-4-6

EMC emissions Conducted EN61000-3-2 harmonics

EN61000-3-3 fluctuation & flicker

Conducted EN55011/CISPR11 0.15 to 30 MHz

Radiated EN55011/CISPR11 30 to 1000 MHz
Leakage current 3.5 mA 230V a-c, 47-63 Hz
Insulation coordination Input Installation Category II For TN or TT power system

Overvoltage Category II

Output Installation Category II Maximum 300V (500V for BOP 10-100MG/

Overvoltage Category II

Pollution degree 2

OUTPUT CHARACTERISTICS

Type of stabilizer Voltage-current, 4-quadrant Switch mode
Switching frequency, output module 100KHz ±5% Output Stage
Source adjustment

range
Sink adjustment range voltage -100% to +100% of rating 0 to 50°C, recuperated energy is sent

(1) All specifications listed in this table are for 230V a-c input voltage.
(2) BOP 6-125MG/ME and BOP 10-75MG/ME only.
(3) Output characteristics are for a single standalone unit. Output characteristics of identical multiple unit parallel/series configurations

are described in the Technical Manual associated with the applicable Cable Kit (see Table 1-4).

(3)

voltage -100% to +100% of rating 0 to 50 deg C
current -100% to +100% of rating

current -100% to +100% of rating

(1)

(2)

) maximum

(2)

) maximum

(2)

) minimum when sourcing

(2)

No setting required. Single phase or between
2 phases of a 3-phase system within 200­240Va-c.

causes protection fault.

nominal output power

) Active PFC Input for both Source and Recu-

peration (Sink)

ME) common mode voltage between output
terminals and chassis ground.

back into line for general reuse

BOP HIPWR 091719 1-3

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

OUTPUT CHARACTERISTICS (Continued)

Digital Programming
resolution / accuracy

Digital Readback
resolution / accuracy

Analog Programming
accuracy

Analog Readback
accuracy

Digital Readback
Characteristics

measurement rate GPIB: 11mS

measurement array 64 samples voltage and current

related ripple/noise

between setpoint

change and mea-

surement response

Voltage 14 bits / 0.03% 3% accuracy for Ext Ref Level (see PAR.
Current

Voltage Limit 12 bits / 0.3%
Current Limit 12 bits / 0.5%

Voltage 16 bits / 0.05% main or limit channel
Current 16 bits / 0.1% main or limit channel

Sustain Output

update rate

Voltage 0.1% of rating • Voltage and Current limit in Voltage Mode

Current 0.1% of rating
Voltage Limit 0.3% of rating
Current Limit 0.5% of rating

Voltage,

variable gain

Current,

variable gain

Voltage

Current

LAN: 25mS

38.4K baud Serial: 28mS

19.2K baud Serial: 32mS
9600 baud Serial: 38mS

rejection of line-

Maximum time

Average
GPIB: 45mS 55mS
LAN: 55mS 60mS

38.4K baud Serial: 55mS 60mS

19.2K baud Serial: 60mS 65mS
9600 baud Serial: 75mS 80mS

14 bits / 0.1%

90 updates/Sec voltage or current via GPIB interface

120 updates/Sec voltage or current via RS-232 interface @

3% of rating

4% of rating

-

0.1% of rating

50, 60, 125Hz Digital readback (see PAR. B.10).

Max.

3.4.4.2). Unit gain adjustable between 0 and
E

(voltage) or I

NOM

O

38.4K baud

and Current and Voltage Limit in Current
Mode.

• The programming signal is 0V to ±10V for
0 to ±E
±I

Onom

• The programming signal is +1V to +10V
for 10% to 100% of all four limits (±voltage,
±current)

• Input impedance is 20KOhms for the main
channel (voltage or current)

• When the limit channels are not used, the
limits are clamped to 1% above the nomi­nal values.

• The limit source must be able to sink a
maximum 0.15mA @ +1V programming
signal

• Gain adjustable range: 10% (recom­mended) to 100% of nominal gain.

Available on request: 0 to ±10V for 0 to
±nominal output voltage.

0 to ±10V for 0 to ±nominal output voltage;
accuracy is for d-c or very low frequency a-c
signals.

Standalone only. See PAR. 3.5.1.2 for details

(Voltage mode) or for 0 to

Onom
(Current mode).

O

NOM

(current).

1-4 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

OUTPUT CHARACTERISTICS (Continued)

Voltage stabilization in
voltage mode

Current stabilization in
current mode

Output isolation voltage d-c or p-p 300V (500V for BOP 10-100MG/ME) Output to chassis ground

Error sensing 0.25V or 1% of voltage rating per wire

Transient recovery in
voltage mode

Series operation
Parallel operation Master/slave Maximum of 5 identical units
Series-parallel Operation
Power-up timing

(parallel, series and series-parallel systems)

Output Protection
limiting

(4) With GND-NET to GND link installed: 0.55mA at 300V (0.91mA at 500V for BOP 10-100MG/ME).
(5) Remote error sensing applies to the main voltage channel. Feedback for the ±voltage limit channels is supplied locally from the

power terminals. Consult factory for a remote sensing solution applicable to the voltage limit channels.

source effect 0.05% of rating min-max input voltage, 230V a-c reference

load effect 0.1% of rating 0-100% load current

time effect (drift) 0.02% of rating 0.5 through 8 hours

temperature effect 0.02%/deg C of rating 0 to 50 deg C

ripple and noise (2% EOmax) p-p/(0.2% EOmax) rms Full scale, nominal resistive load; includes

switching noise

source effect 0.05% of rating min-max input voltage, 230V a-c reference

load effect 0.2% of rating 0-100% load voltage

time effect (drift) 0.02% of rating 0.5 through 8 hours

temperature effect 0.02%/deg C of rating 0 to 50 deg C

ripple and noise 2% IOmax p-p / (0.2% IOmax) rms Full scale, load is shunt only; includes switch-

ing noise

d-c leakage current 0.1mA @ 300V

GND-NET to GND link not installed.

(0.1mA @ 500V for

BOP 10-100MG/ME)

Above rated output

(5)

(whichever is less)

maximum excursion 5% of nominal output nominal voltage, 50% load step

Recovery time 200

S Return within 0.1% of set voltage

Master/slave Maximum of identical 3 units,

up to 300V max.

2 series x 2 parallel
3 series x 2 parallel

Master/slave for both series and parallel
branches of identical units

15 Sec max. For system to be able to respond to analog or

digital control.

Analog Voltage and current limited in four quadrants, adjustable between 10% and 101%of

E

O

rate.

NOM

or I

. The analog limits are converted to digital limits at 100ms update

NOM

O

Digital Voltage and current limited in four quadrants, adjustable between ±Internal minimum

E

or I

MIN

O

(box) (see Figure 1-3) and ±1.01 E

MIN

O

O

NOM

or I

O

NOM

.

(4)

BOP HIPWR 091719 1-5

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

OUTPUT CHARACTERISTICS (Continued)

Output overvoltage/overcurrent

Output Stage Protection

Input Stage Protection (PFC)

Small signal
Bandwidth

Rise/Fall time

voltage channel

current channel 800 Hz minimum

voltage channel

current channel

Heatsink overtemperature,

switchers overcurrent

Internal overvoltage, undervoltage,

overcurrent, heat sink

overtemperature, fan inoperative

Input circuit breaker overcurrent Trips circuit breaker to shut off unit

2 KHz minimum Into nominal resistive load 10% of rating

(BOP 6-125MG: 600 Hz minimum)

PROGRAMMING/DISPLAY CHARACTERISTICS

Analog I/O Port
(See Table 2-10)

Main channel

(voltage or current)

Protection Limit

channels:

(±Voltage, ±Current)

Mode Control Voltage: open circuit or TTL logic 1

Current: short circuit or TTL logic 0

–10V to +10V Full range output, 20K Ohm input impedance

+0.05V to +10V 0.5% to 100% of Nominal Range. Input volt-

300/300

500/500

S

S

Triggers latched shutdown protection of the
output module and PFC stage. Recover by
cycling power off, then on or by pressing
RESET at the front panel.

Into short circuit, 10% of rating
Into nominal resistive load, measured from 10

to 90%, from 0 to ±100% of rating
Into short circuit, measured from 10 to 90%,

from 0 to ±100% of rating

(see PAR. 3.4)

age clamped to 12V through 1K ohms. Maxi­mum of 0.15mA input current at1V input
voltage.

Available only when digitally activated
through Power-up setting.

External Protection Port
(see Table 2-4)

Output Current

Analog Readback

External Shutdown Isolated input for shutdown of the

External Shutdown

External On-Off

Flag or External

Trigger

0 to ±10 Volts corresponds to zero to

± Full Scale nominal output current

BOP (latched status)

Flag

Isolated output indicating

shutdown status)

Flag: Isolated output indicating

output on (enabled, STANDBY off) or

off (disabled, STANDBY on) status)

Trigger: Isolated trigger output for

external devices.

Output impedance of this signal is 2K Ohms.

Pulse width: 100
Action delay: 100
Restore operation by cycling input power or
pressing RESET key.

Action delay: 100

Flag:
LIST:SET:TRIG enables trigger function.
Flag action delay: 200 mS max

Trigger:
LIST:CLE disables trigger and restores flag.
Trigger output pulse duration:
settable between 0.25 to 34mS
Trigger output action delay: 100
Trigger output active level: settable to either
“0” or “1.”

S min.

S max

S max

S max.

1-6 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

PROGRAMMING/DISPLAY CHARACTERISTICS (Continued)

Trigger Port (See Table 2-3)

Shutdown (pin 2): Operation of pin 2 is controlled by OUTP:CONT command (see Par. B.23).

LPLS (default) External Trigger Shutdown (Isolated

Settings are LPLS (default), HON, LON, HOFF, LOFF, OFF. Either OFF, LPLS, LOFF
or HOFF is required if using OUTP ON and OUTP OFF commands to control the out­put. Setting output to off stops a running list.

input. Front panel display shows Low­Pulse. Logic 0 or short-circuit causes
the output to go to STANDBY (off, dis­abled) (latched status)

Pulse width: 100
Action delay: 200 mS max
Restore operation by pressing STANDBY
key. or sending OUTP ON command via
remote interface.

S min.

Pulse width: 6 mS min for any guaranteed
unit response.
Action delay: 200 mS max

Pulse width: 6 mS min for any guaranteed
unit response.
Action delay: 200 mS max

Action delay: 200 mS max

Action delay: 200 mS max

S min.

Action delay: 500

S max

External Trigger

Input (pin 4)

HON Front panel display shows HighIsOn.

Isolated Input for controlling output
status, on or off. High or open (not
connected), output is on (enabled).
When 0 volts or short circuit applied to
the pin, output is off (disabled)

LON Front panel display shows LowIsOn.

Isolated Input for controlling output
status, on or off. Logic 0 = output is on
(enabled); Logic 1 or open (not
connected) = output is off (disabled).

LOFF Front panel display shows LowIsOff.

Isolated Input. When disconnected or
open, STANDBY and OUTP ON com­mands will set output on. When low or
shorted, output is always off.

HOFF Front panel display shows HighIsOff.

Isolated Input. When disconnected or
open, output is always off. When low
or shorted, STANDBY key and OUTP
ON commands will set output on.

OFF Trigger port disabled. Inputs applied

to pin 2 have no effect.

Isolated input for trigger events Pulse width: 100

FUNCTION GENERATOR CHARACTERISTICS (See PAR. 3.3.10)

Digital control local Panel-mounted keypad Direct Entry

remote IEEE 488-2 (GPIB)
remote RS 232
remote RS 485 (BITBUS) Used for series and parallel configurations.

Display front panel 4.7 inch backlit 16-bit color LCD, displays all functions

remote

(MG models)

remote

(ME models)

Maximum number of waveforms Local: 16

All parameters read back on GPIB or RS 232 buses

All parameters read back on LAN or RS 232 ports

Remote: 1

SCPI

Local: Saved for power-up
Remote: Lost when the unit is turned off,
must be saved on the host computer)

BOP HIPWR 091719 1-7

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Maximum number of segments or basic wave­forms per waveform

Types of Basic waveforms Sine (Sinusoidal waveform)

Triangle (Triangular waveform)

Pos. Ramp (Ramp waveform)

Neg. Ramp (Sawtooth waveform)

Maximum number of points per basic wave­form

Count (Number of repetitions) Range: 1 to 255

Waveform Name 10 characters maximum
Waveform Parameters Type: Voltage or Current

Local: 3933

For Count = 0 the waveform is exe-

cuted indefinitely until stop command

Local: 10

Remote: 126

Square (50% Duty Cycle Pulse)

Level (DC waveform)

is sent

Positive Protection Limit:

(Vd-c or Ad-c)

Negative Protection Limit:

(Vd-c or Ad-c)

Count: number

Initial/Repeating

Or maximum number of points (whichever
comes first)

• The time interval for each segment
depends on the type of waveform: period
for ramp and square waveforms, period or
fraction of period for sine and triangular
waveforms and time interval for DC levels

• Segments that cause the waveform to
exceed the maximum number of points
are not executed. For local operation they
are marked with a triple asterisk on the
front panel. For remote operation an error
message is generated.

• Local: Factory default: when the count is
complete or if execution is stopped using

%, the output of the unit is set to OFF

(Standby indicator lit). Output must be
enabled (press STANDBY) to execute the
waveform again. (See Table 3-3, WAVE­FORM STOP for additional settings.)

• Remote: When the count is complete or
the waveform is stopped using the
VOLT:MODE FIX command, the output
remains at last output value.

• Type of waveform, voltage or current, can
be selected only for a new waveform and
consequently applies to all waveform seg­ments. Changing the type for an existing
waveform is not possible, unless the
waveform is erased first.

• The Protection values (positive/negative)
and the count number apply to all wave­form segments and can be edited at the
beginning of a new waveform or later
when modifying a waveform (see PAR.

3.3.10.8).

• All segments except the last may be set to
run once (Initial) or per the Count setting
(Repeating).

1-8 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Basic waveform parameters Sine: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c),

Start Phase (°), Stop Phase (°).

Triangular: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c), Start

Phase (°), Stop Phase (°).

Ramp (Pos. or Neg.): Frequency (Hz), Amplitude (Vp-p or Ap-p),

Offset (Vd-c or Ad-c).

Slope LIne (Sec): Final Amplitude
Square: Frequency (Hz), Amplitude (Vp-p or Ap-p), Offset (Vd-c or Ad-c).
Level: Timing (Sec), Amplitude (Vd-c or Ad-c).

• Local: the Start/Stop phases, available for sine and triangle only, can be set or
edited by modifying the existing segment (see PAR. 3.3.10.8).

• Remote: the start/stop phases are global parameters, applicable to all sine/ trian­gular waveform segments.

• The Start/Stop points are independent and can have any value between 0° and
360°.

LIST command characteristics for “string” type
waveform (Remote only)

Maximum number of points

• For single (global) dwell time:

5900 (high resolution)

• For 114 or fewer different dwell

times: 3933

• For 115 or more different dwell

times: 2950

Dwell time range: 93

S to 34mS.

Note: Dwell time list must match (balance)
the amplitude list.

Dwell time resolution (increment):

S

0.751

Skip feature (a number of steps can
be skipped from the LIST at the first
run using LIST:COUN:SKIP.)

Able to synchronize a LIST command
with multiple BOP’s or other devices
using Trigger Port (see Table 2-4
NOTE).

Able to sample output voltage or cur­rent during LIST command execution
(see Figures B-3 and B-4).

BOP HIPWR 091719 1-9

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Waveform graphics displayed on LCD for both
Local and Remote operation

Frequency: Not applicable to Level

Range (Hz) 0.001 to 443 Sine, Triangle

Programming Resolution (Hz) 0.001 Sine, Triangle

Accuracy 1.5% of Frequency Sine, Triangle, Square, ±Ramp

Period (applicable to Level only)

Range (Seconds): 0.0005 TO 1.9999 (local front panel) 0.0005 to 5.0000 (remote interface)

Resolution: 0.0001

Accuracy: 1.5% of Time Duration

Amplitude Range

Main Channel Voltage (Volts p-p) 0 to 2 x E

Current (Amperes

Protection Limit Channel . Current, bipolar

(Amperes)

Voltage, bipolar

Offset Voltage (Volts)

Current (Amperes) –I

Local: The LCD represents the programming waveform graph of the main channel,
voltage for voltage mode or current for current mode.

• There is no difference between programming and real output waveform, as long as
programmed Limits are not exceeded and the load is resistive. The programming
waveform representation does not taking into account the interaction between set­tings and load.

• The graph timing is automatically selected for the best waveform representation.

• Because the BOP unit is not an oscilloscope, the waveform representation is
sometimes very sketchy, especially if there is a large dif ference between the timing
of two adjacent segments or for a reduced number of repetitions of high frequency
waveform. Also, synchronization is difficult for low frequency waveforms.

Remote: When using LIST commands for waveform creation/ execution, the LCD dis­plays the actual or real waveform graphs of the main and limit channel, voltage & cur­rent protection limit for voltage mode and current & voltage protection limit for current
mode. Main and Limit graphs are not phase correlated.

• In order to get a meaningful representation, the graph timing must be chosen prop­erly. It is recommended that the first value higher than total waveform time be cho­sen from the 12 time selections, spread from 0.04 Second to 75 Seconds.

0.02 to 532 ±Ramp

0.02 to 1000 Square

0.01 Ramp, Square

Sine, Triangle, Square, ±Ramp
Sine, Triangle, Square, ±Ramp
(set once for all segments)

p-p)

(Volts)

0 to 2 x I

0 to I

0 to E

O

O

O

NOM

O

NOM

NOM

NOM

Applies to offset of sine, triangle, ±ramp, and

–E

to +E

NOM

O

NOM

O

to +I

O

O

NOM

NOM

square waveforms and to Level waveform
Amplitude.

1-10 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

FUNCTION GENERATOR CHARACTERISTICS (Continued)

Amplitude Resolution (Programming)

Main Channel

and Offset

Voltage

(millivolts a-c)

.35 Sine

(millivolts d-c) 1 Triangle, Square, ±Ramp, Level

Current

.35 Sine

(milliamperes a-c)
(milliamperes d-c) 1 Triangle, Square, ±Ramp, Level:

Protection Limit

Channel .

Current, bipolar

(Amperes)

Voltage, bipolar

0.1

0.1

(Volts)

Amplitude Accuracy

Main Channel

and Offset

Protection Limit.

Channel.

Distortion (THD-F, Total Harmonic Distortion
relative to the fundamental component)

Voltage 0.03% E

Current 0.1% I

Current 0.5% I

Voltage 0.3% E

5% max. Sine

13% max. Triangle

O
O

O

O

NOM
NOM

NOM

NOM

70% max. ±Ramp
47% max. Square

Start/Stop Angle (Phase) Range 0 to 360° Sine, Triangle

Programming Resolution 0.01°

Accuracy Start Angle 1°

Stop Angle 1° @ 0.01Hz, to 16° @ 443 Hz Frequency dependent

SAVE/RECALL CHARACTERISTICS (See PAR. 3.3.9)

Number of Locations 99
Parameters Saved or Recalled All parameters saved for power-up.

Mode of operation Voltage, Current or External For External the operating mode is deter-

mined by signal at I/O Port; no signal selects
voltage mode (see PAR. 3.4.3).

Reference type Internal, External or

Main Amplitude

(Internal)

Protection Limit Amplitude

(Internal)

Output status ON or OFF

External Reference Level

Internal, External or

Lesser Limit

O

MIN

O

NOM

or I

NOM

or I

O

or I

MIN

O

O

NOM

to

NOM

0 to E

(internal or external)

E

O

1.01 E

Main channel

Limit channel

Main Channel:
Voltage (Volts) for Voltage mode,
Current (Amperes) for Current mode

Limit Channel, Positive and Negative
Voltage (Volts) for Current mode,
Current (Amperes) for Voltage mode

BOP HIPWR 091719 1-11

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

MISCELLANEOUS FEATURES

Maximum/Minimum Settings

Protection Limit

Type

Main Channel 0 to E

Protection Limit Channel

(maximum value, Internal)

Load Type Settings

Self-test capabilities
Interface Settings Data Format SCPI (default), CIIL

GPIB Address 0 to 30 (6 = default)

Output Status @ Reset ON or OFF (OFF = default)

Serial Baud Rate Off, 9600, 19200 (Off = default)

Device Clear SCPI (default) or MATE

XON/XOFF Enable (default) or Disable

Prompt Disable (default), Enable,

Calibration Assisted by front-panel prompts
Power-up Settings Mode Voltage (default) or Current

Main Channel

Reference Type

Protection Limit Channel

Reference type
Protection Limit

Levels

(Internal)

Output status On (default) or Off

Password

Types

Protection Choices Unprotected, Main, Admin1, Admin2 Password menu always protected by Admin2

Items Protected Interface, max/min , Load type, Test,

Series, Parallel, Series x Parallel configura­tions of identical units

Bipolar (default) or Independent

1.01 E

O

E

O

NOM

MIN

O

NOM

or I

or I

(default) Software limit to setting of main channel

NOM

O

or I

to

MIN

O

(internal)

NOM

O

Active (default), Resistive,

Battery, Custom

Display, Keypad, Digital Interface,

Serial Interface, Analog, Output

Enable with Echo

Internal (default), External or External

Reference Level (Gain Mode)

Internal (default), External

or Lesser Limit

E

or I

O

1.01 E

MIN

O

NOM

O

or I

MIN

O

to

NOM

Main, Admin1, Admin2

Calibration, Power-up, Keypad @

local, Keypad lockout at power-up,

Save Display Chg

(See Figure 3-6 for defaults)

Single, Parallel, Series, 2 X 2, 3 X 2 2 X 2 is two parallel branches of two series-

Voltage (Volts) for Voltage mode,
Current (Amperes) for Current mode

Software limit to setting of protection limit
channel.
Voltage (Volts) for Current mode
Current (Amperes) for Voltage mode

Consult factory for custom setting.

Serial Interface test requires Loop Back Test
connector (p/o KIT 219-0436, see Table 1-4).

Applies to Limit channel

Voltage (Volts) for Current mode,
Current (Amperes) for Voltage mode

Factory defaults: Main: DEFAULT,
Admin1: 0, Admin2: KEPCO

Multiple unit configurations are protected by
Admin2 password.

Save Display Chg choice is Enable or Dis­able; when set to Disable, prevents changes
made to the display settings from being
saved for power up.

connected identical units.
3 X 2 is two parallel branches of three series­connected identical units.

1-12 BOP HIPWR 091719

TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued)

SPECIFICATION RATING/DESCRIPTION CONDITION

GENERAL (ENVIRONMENTAL) CHARACTERISTICS

Temperature operating 0 to +50 deg C Full rated load

storage -20 to +85 deg C

Cooling Two internal fans exhaust to the rear
Humidity 0 to 95% RH non-condensing
Shock 20g. 11mS ±50% half sine non-operating
Vibration 5-10HZ: 10mm double amplitude 3 axes, non-operating

10-55HZ: 2g 3 axes, non-operating
Altitude sea level to 10,000 feet
Safety Certification a-c power UL 3101-1 and EN 6101-1 Pending

PHYSICAL CHARACTERISTICS

Dimensions English 5.25' X 19" X 21.5" H X W X D

metric 133.3mm X 482.6mm X 546.1mm H X W X D

Weight, 1000W models English 53 lbs

metric 24.1Kg

Connections Source power 3-pin IEC connector

Load connections Nickel-plated copper bus bars With 1/4-20 threaded standoff.

Sensing Output

Terminal Block

Analog I/O control port 15-pin D female See Figure 2-1, Table 2-10

PAR/SER CTRL IN port 8-pin mini DIN connector See Figure 2-1, Table 2-7

PAR/SER CTRL OUT port 4-pin mini DIN connector See Figure 2-1, Table 2-6

PAR/SER PROT IN port 8-pin phone jack See Figure 2-1, Table 2-8

PAR/SER PROT OUT port 8-pin phone jack See Figure 2-1, Table 2-9

EXT PROT port 6-pin phone jack See Table 2-4

Primary digital port 24-pin GPIB connector IEEE 488 port - See Table 2-11

Secondary digital

ports

External Trigger 4-pin stereo audio phone jack See Table 2-3

7-pin terminal block Default: 3 links installed for local sensing and

ground network connected.

6-pin phone jack RS 232 port - See Table 2-5

5-pin mini DIN female connector IEEE 1118 port - See Table 2-2

BOP HIPWR 091719 1-13

1.4 LOCAL CONTROL

Either the front panel keypad or the adjust control can set and adjust output voltage and current
under local control. The display provides a digital display of output voltage and current as well
as a pictorial display of real-time analog voltage and current meters.

The keypad includes five function keys which provide access to the menu-driven functions of
the unit. The menu screens provide access to save the unit’s settings, recall previously saved
settings, configure or execute a waveform, display references or configure the unit by setting
GPIB address, Serial protocols, m aximum acceptable voltage and current, etc. (see PAR. 3.3
for details on local control).

Context-sensitive help scree ns are available by pressing the HELP key. Actual output voltage
and current displays are available while the help screens are displayed.

1.5 REMOTE CONTROL

The BOP Power Supply can be remotely controlled directly via either the IEEE 488.2 (GPIB)
bus (MG models only, see PARs. 3.5 and 3.5.4), LAN Interface (ME models only, see PAR.

3.5.7) or RS232C (see PAR. 3.5.6) interface using SCPI commands (see and Appendix A and
B). Most features available in local mode can also be accessed remotely via the d igital interface.
The unit can be controlled with a VISA (Virtual Instrumentation Software Architecture) driver to
facilitate remote programming of the BOP Power Supply (see P AR. 3.5.5). The VISA driver is an
interface written in standard C language which adds the proper SCPI syntax to commands sent
to the BOP.

The BITBUS is used to allow communication between identical BOP units that are connected in
series and/or parallel to expand the voltage or current range (see PAR. 2.7.6.2).

The BOP can also be controlled remotely using analog signals applied to the Analog I/O Port
(see PAR. 3.4 for details.)

1-14 BOP HIPWR 091719

2

0

.

0

0

0

[

5

0

8

.

0

0

]

2

1

.

4

3

9

[

5

4

4

.

5

4

]

2

2

.

8

0

0

[

5

7

9

.

1

1

]

2

1

.

5

6

4

[

5

4

7

.

7

3

]

2

2

.

0

0

0

[

5

5

8

.

7

9

]

2

3

.

8

6

3

[

6

0

6

.

1

2

]

18.235 [463.16]

18.985 [482.21]

1

.

4

7

0

[

3

7

.

3

4

]

1

.

7

3

8

[

4

4

.

1

5

]

5

.

2

1

8

[

1

3

2

.

5

4

]

2

.

2

1

5

[

5

6

.

2

7

]

OBROUND 0.25x0.453 (4 LOC.)

16.835 [427.60]

17.675 [448.93]

18.018 [457.64]

18.805 [477.63]

FIGURE 1-2. 1000W BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 1 OF 2)

BOP HIPWR 091719 1-15

SLIDES TRAVEL DISTANCE: 23.000 [584.2]

22.000 [558.79]

SEE NOTE 6.

REAR VIEW

REMOVE FEET FOR
RACK MOUNTING.

1-16 BOP HIPWR 091719

FIGURE 1-2. BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 2 OF 2)

1.6 FEATURES

1.6.1 DIGITAL CALIBRATION

The BOP Power Supply contains no internal adjustments. Calibration is done entirely via the
keypad or remotely via the GPIB (for MG models), LAN (for ME models) or RS 232 interface
using digital entries and a calibrated DVM, a precision d-c reference voltage source and preci­sion shunt resistor. Calibration instructions appear on the front panel after a password is
entered; previous calibration values are saved and can be restored using the remote interface if
desired. The original factory calibration values can also be restored using the remote interface.
(Refer to Section 4.)

1.6.2 VOLTAGE/CURRENT PROTECTION

Positive and negative voltage and current protection values can be individually programmed.
Refer to PAR. 3.3.3.

1.6.3 WAVEFORMS

The BOP models have the capability to make the output follow complex waveforms. These may
be generated either externally, using an analog reference voltage (see PAR. 1.6.6), or internally,
using user-generated waveforms. The waveforms can be setup and recalled from both the front
panel display and the computer interfaces.

Up to 16 user-generated waveforms can be stored for later use. The user selects the operating
mode, positive and negative protection levels, and a coun t (the number of times the waveform is
to be repeated). Each waveform consists of up to 10 segments; each segment is assigned one
of six basic waveform types: square, sine, triangle, negative ramp, positive ramp and level.
Depending on the waveform type, frequency, peak-to-peak amplitude, offset, and start and stop
phase angle are then assigned by the user.

Segments at the beginning of the waveform can be pr ogrammed to be executed o nly once, or to
be repeated as specified by the coun t. A graphic representation on the LCD shows the wa ve­form as segments are added and is displayed prior to execution. This feature provides unique
versatility for generating a waveform that meets user requirements. Refer to PAR. 3.3.10 for fur­ther details.

1.6.4 SAVING AND RECALLING SETTINGS

The BOP offers 99 memory locations accessible from th e front p anel th at can b e used to sto re a
set of operating parameters for later use. For each location, the user can store op er at ing m o de ,
output on/off, Main channel reference type and value, and protection reference type and value.
The stored settings can then be recalled to quickly program the unit to the predetermined set­ting. Refer to PAR. 3.3.9 for further details.

1.6.5 EXTERNAL REFERENCE (ANALOG CONTROL)

An external reference, provided through the re ar analo g port con nector (se e Table 2-10), can be
used to control the output of the BOP. The external reference may be applied directly or can be
attenuated by the digital controls (see PAR. 3.4.4.2). The BOP will limit its output b ased on the
user configurable limits so that, in the event of a failure in the external reference, the devices
connected to the output are protected. Refer to PAR. 3.4 for further details on using external sig­nals to control the output.

BOP HIPWR 091719 1-17

1.6.6 EXTERNAL LIMITS

When the unit is controlled by an external reference, the protection limits can also be controlled
by analog signals that are digitally calibrated. The BOP samples the limit channel inputs and
applies the proper limit levels at a 5 mS rate with the positive and negative limits being sampled
alternately. The external limit inputs are hardware-protected against overvoltage. Refer to PAR.

3.4.5

1.6.7 USER-DEFINED VOLTAGE/CURRENT MAXIMUM VALUES (SOFTWARE LIMITS)

The BOP output can be programmed not to exceed user-defined values. For example, the BOP
36-28MG, which has a maximum capacity of ±36V, ±28A, can be limited to +30V, –10V, +5A, ­1A for working with circuitry that might be damaged by higher levels. Once the limits are set, val­ues exceeding the limit values will not be accepted, including external references and protection
limits. Refer to PAR. 3.3.4.1.

1.6.8 PARALLEL AND SERIES CONFIGURATIONS

Identical BOP units may be configured in series, parallel or parallel-series (2 X 2 or 3 X 2) con­figurations. The 2 X 2 configurations doubles both output voltage and output current, the 3 X 2
configuration triples the output voltage and dou bles the output curren t. If a series/pa rallel config­uration is enabled, communication between the master BOP and those configured as slave
units occurs via the BITBUS. Refer to PAR. 2.7.6.2 for further details.

1.6.9 ENERGY RECUPERATION

The BOP is a four-quadrant device as shown in Figure 1-3. Operating as a source, it delivers
energy into a passive load, and as a sink it operates as an electronic load, absorbing and dissi­pating energy from an active load. To minimize energy dissipation, the BOP employs energy
recuperation, where energy sinked from an active load is passed backwards through the output
circuit and the bidirectional input power factor correcting circuit to the a-c power lines, where it
becomes available for reuse. This technology allows high power levels using switch-mode tech­nology while maintaining high efficiency and reduced size and weight.

1.7 EQUIPMENT SUPPLIED

Equipment supplied with the BOP power supply is listed in Table 1-3.

TABLE 1-3. EQUIPMENT SUPPLIED

ITEM FUNCTION

Source Power Entry mating connector Mates with source power entry connector 142-0381 (Kepco) (IEC 320)
PAR/SER CONTROL - IN

mating connector

Mates with PAR/SER CONTROL - IN port to allow
access to pins required for calibration

PART NUMBER

142-0488 (Kepco)

1.8 ACCESSORIES

Accessories for the BOP Power Supply are listed in Table 1-4.

1-18 BOP HIPWR 091719

TABLE 1-4. ACCESSORIES

ITEM FUNCTION

PART NUMBER

Mating Connector, Trigger Mates with Trigger port. 142-0527 (Kepco)

SP2501 (CUI Stack)

IEEE 1118 (BITBUS)
Mating connector

Allows connection to IEEE 1118 (BITBUS) port. 142-0485 (Kepco)

KMDLA-5P (Kycon Inc.)
IEEE 488 Cable, (1 meter long) Connects BOP power supply to GPIB bus. SNC 488-1
IEEE 488 Cable, (2 meter long) Connects BOP power supply to GPIB bus. SNC 488-2
IEEE 488 Cable, (4 meter longs) Connects BOP power supply to GPIB bus. SNC 488-4
Interconnection Kit for multiple

identical power supplies in paral­lel (increase output current)

Cables required to connect multiple BOP models in parallel for
increased current capability, e.g., connecting two BOP10-75MG
models in parallel to produce a virtual BOP 10-150MG.

KIT 219-0449 (2 in parallel)
KIT 219-0446 (3 in parallel)
KIT 219-0447 (4 in parallel)
KIT 219-0448 (5 in parallel)

Interconnection Kit for multiple
identical power supplies in
series (increase output voltage)

Interconnection Kit for multiple
identical power supplies con­nected in two parallel branches
each comprised of 2 or 3 units
connected in series

Cables required to connect multiple BOP models in series for
increased voltage capability , e.g., connecting two BOP 10-75MG
models in series to produce a virtual BOP 20-75MG.

Cables required to connect two parallel branches of series con­nected power supplies.
KIT 219-0480 is used for 2 parallel connected branches of 2
series connected units. The four (total) power supplies provide
double the output current and double the output voltage of a a

KIT 219-0443 (2 in series)
KIT 219-0444 (3 in series)

KIT 219-0480 (2 in series X 2

parallel branches)

KIT 219-0481 (3 in series X 2

parallel branches)

single unit
KIT 219-0481 is used for 2 parallel connected branches of 3
series-connected units. The six (total) power supplies provide
double the output current and triple the output voltage of a a sin-

gle unit
Line Cord (250V, 20A) Provides connection to a-c mains via Nema 6-20P connector. 118-1087
Line Cord (250V, 20A) Provides connection to a-c mains via Nema L6-20P locking type

connector.

118-1088

RS 232 Cable Kit Contains RJ11 to RJ45 Patch cord, RJ 45 Patch cord, two RS

232 adapters, one with male pins to connect to DTE equipment

and one with female pins to connect to a PC (personal com-

puter), two RS 232 Loop Back test Connectors (one 6-pin and

KIT 219-0436

one 8-pin) to test RS 232 communication and aid in isolating RS

232 communication problems.
RS 232 Adapter (Male pins) Allows RS 232 port to be connected to DTE equipment. (Sup-

plied in KIT 219-0436.)
RS 232 Adapter (Female pins) Allows RS 232 port to be connected to a PC (personal com-

puter). (Supplied in KIT 219-0436.)

142-0487

(L-COM RA098M)

142-0506

(L-COM RA098F)

15-pin DSUB Connector Mating connector for Analog input connector A2A5J6

Dsub 15 pin hood

108-0374

(Tyco-Amp 207470-1)

Dsub 15 pin male

142-0449

(Amphenol 17S-DA15P)

IDC 6-pin connector Mating connector for RS-232 PORT, connector A1J5 and PRO-

TECTION EXT. PORT, connector A2A5J7
IDC 8-pin plug Mating connector for PAR/SER PROTECT PORT (IN and OUT)

connectors.

142-0536

(Amphenol 5-555176-3)

142-0535

(Amphenol 5-557961-2)

BOP HIPWR 091719 1-19

TABLE 1-4. ACCESSORIES (CONTINUED)

!

ITEM FUNCTION

Slides Allows easy withdrawal of unit from rack (see Figure 1-2). (Model

CS 04 includes slides, brackets, all mounting hardware and
installation instructions.)

Side Support “L” Bracket L bracket mounts to vertical rails to provide

additional side support for rack-mounted
models.19.6 in. long x 2.3 in. high x 3.5 in.
wide. Two (2) required per unit.

Filler Support Bracket 1U Filler support bracket mounts directly

under lower front edge of unit and fastens to
the rack edge. Use of this bracket also
provides additional cooling space between

power supplies.
Heat Sink Provides adequate cooling for calibration sense resistors. 136-0451
Terminal Cover Protects against contact with output and barrier strip terminals.

Install using the two existing screws (adjacent to two ground ter-

minals) securing rear panel to chassis. Particularly recom-

mended for 72V and 100V models for safety purposes. Consult

factory for parallel/series configurations.

PART NUMBER

CS 04

128-1775

FSB 1

129-0423

1.9 SAFETY

Service must be referred to authorized personnel. Using the power supply in a manner not
specified by Kepco. Inc. may impair the protection provided by th e power supply. Observe all
safety precautions noted throughout this manual (see listing on page D, preceding the Table of
Contents). Table 1-5 lists symbols used on the power supply or in this manual where applicable.

TABLE 1-5. SAFETY SYMBOLS

SYMBOL Meaning

WARNING! RISK OF ELECTRIC SHOCK!

CAUTION: REFER TO REFERENCED PROCEDURE.

WARNING

CAUTION

INDICATES THE POSSIBILITY OF BODILY INJURY
OR DEATH.

INDICATES THE POSSIBILITY OF EQUIPMENT
DAMAGE.

1-20 BOP HIPWR 091719

FIGURE 1-3. BOP OUTPUT CHARACTERISTICS

NOTE 3. The concept of “box value” is illustrated above. It is an area around the origin, where the limits of the unit

(voltage or current) cannot be programmed. This minimum (box) value for the positive limits or maxi­mum (box) value for the negative limits, is a model dependent constant of approximately 0.2% of the
nominal values for voltage and current. The parameters involved are defined by Note 1 for voltage and
Note 2 for current mode, and are further explained in Tables 3-4 and 3-5.

BOP HIPWR 091719 1-21/(1-22 Blank)

SECTION 2 - INSTALLATION

2.1 UNPACKING AND INSPECTION

This instrument has been thoroughly inspected and tested prior to packing and is ready for
operation. After careful unpacking, inspect for shipping damage before attempting to operate.
Perform the preliminary operational check as outlined in PAR. 2.3. If any indication of damage is
found, file an immediate claim with the responsible transport service.

2.2 TERMINATIONS AND CONTROLS

a) Front Panel: Refer to Figure 3-1 and Table 3-1.
b) Rear Panel: Refer to Figure 2-1 and Table 2-1.

FIGURE 2-1. BOP SERIES REAR PANEL

BOP HIPWR 091719 2-1

TABLE 2-1. REAR PANEL CONNECTOR FUNCTIONS

NUMBER

(FIGURE 2-1)

1

2

3

4

5

6

7

8 LAN PORT

9

10

11 terminals Frame or chassis terminals
12

13

14

CONNECTOR/TERMINAL

(REFERENCE DESIGNATOR)

IEEE 1118 (BITBUS) PORT

(connector A1J4)

TRIGGER

(connector A1J3)

IEEE 488 (GPIB) PORT

(connector A1J6)

ANALOG I/O PORT
(connector A2A5J6)

PARALLEL/SERIAL

CONTROL PORT

(connectors A2A5J3, IN

and A2A5J4, OUT)

PARALLEL/SERIAL

PROTECT PORT

(connectors A2A5J1, IN

and A2A5J2 OUT)

PROTECT EXT PORT

(connector A2A5J7)

INPUT connector
(connector A7J1)

CAUTION:

Do not connect load

to these terminals;
damage to the unit

can occur.

Monitor and Sensing

terminal block

(terminal block A7A1TB1)

COMMON

(terminal A7J3)

OUTPUT

(terminal A7J2)

RS232 PORT

(connector A1J5)

Used for multiple identical BOP master/slave parallel, and series and series-parallel
configurations (refer to PAR. 2.7.6.2, see Table 2-2).

May be used to initiate BOP output. (See Table 2-3.)

Installed on MG models only. Used for Remote control of the BOP via the IEEE
488 (GPIB) interface (See Table 2-11.)

Installed on MG models only. Provides interface for analog input/output signals.
(See Table 2-10.)

Provides interconnections used to control parallel or serial configurations of identical
BOP’s as a single power supply (see Table 2-7 for A2A5J3, IN and Table 2-6 for
A2A5J4, OUT).

Provides interconnections used to control protection shutdown of power supplies
connected in parallel or serial configurations (see Table 2-8 for A2A5J1, IN and
Table 2-9 for A2A5J2, OUT).

Provides means for controlling protection via external circuitry and provides status
flags to external circuitry. (See Table 2-4.)

Installed on ME models only. Used for Remote control of the BOP via the LAN
interface (see PAR. 3.5.7.4). Indicators for LAN activity and speed are integral to the
LAN port.
LAN Reset switch is a pushbutton switch that requires a thin tool (e.g., the end of a
paper clip) to activate. This switch restores the LAN interface configuration to the
factory defaults presented in 3.5.7.1.
LAN Indicator - During initialization, the green LAN indicator blinks rapidly while
attempting to locate a valid IP address. If successful, the LAN indicator stays on
without blinking; When the LAN indicator is not lit it indicates failure to find a valid IP
address. This indicator can be intentionally blinked using the ID INSTRUMENT fea­ture of the web-based interface to identify which unit is being accessed in a multi­unit environment. While the LAN indicator blinks, foreground and background colors
of the LCD display alternate.

Connects source power to unit.
Pin 1 - Line (or Line 1 without Neutral connection)
Pin 2 - Neutral (or Line 2 without Neutral connection)
Pin 3 - Ground (Protective conductor terminal)

Terminal block provides external connections as follows:
OUT S: Sense line connection to load (compensate for voltage drop on connections
to load.) See PAR. 2.5.6 and 2.5.7 (Terminal 2).
OUT MON: Monitor connection used to monitor output voltage at power terminals
and to implement local sensing (Terminal 3).
GND NET: Grounding network connection (Terminal 4). See PAR. 2.5.3.1.
GND: Chassis ground connection (Terminal 5).
COM MON: Monitor return connection (Terminal 6). Used to monitor output voltage
at power terminals and to implement local sensing.
COM S: Sense line return connection from load (Terminal 7) See PAR. 2.5.6 and

2.5.7.
N/C: Not Connected.
COMP: Used for stable operation in parallel or series (see Figures 2-11 thru 2-14).

Power output return from load.

Power output connection to load.

Used for Remote control of the BOP via the RS 232 serial interface. (See Table 2-5
for details.)

FUNCTION

2-2 BOP HIPWR 091719

TABLE 2-2. IEEE 1118 CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

IEEE 1118, referenced to pins 5, 8
(2-Wire Differential Interface)

IEEE 1118, referenced to pins 1, 3
(2-Wire Differential Interface)

Connect to pin 5 or 8 to add an internal termination resistor
to first/last unit on the daisy chain.

IEEE 1118 (BITBUS)

PORT

(connector A1J4)

1, 3 (shorted) CONTROL BUS “A”

5, 8 (shorted) CONTROL BUS “B”

6TERMINATOR

TABLE 2-3. TRIGGER PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 LOGIC GND Return for TRIGGER and OUTPUT ON-OFF signals.

OUTPUT ON-OFF Operation of pin 2 is controlled from either the front panel (PAR.

3.3.6: LowPulse, HighIsOn, LowIsOn, HighIsOff,
LowIsOff, OFF) or by OUTP:CONT command (PAR. B.23: LPLS,
HON, LON, LOFF, HOFF, OFF).

Factory default is LowPulse upon power-up: Logic 0 ((0 volts or
short circuit) for at least 100
unit in standby, however Logic 1 (TTL or 5V CMOS level) does
NOT enable the output. STANDBY key or a remote OUTP ON
command must be used to enable the output. Response to this
signal is relatively slow (200mS max).

HON: Logic 1 or open (not connected) = output is on (enabled);
Logic 0 = output is off (disabled). HON is shown as HighIsOn
when configuring from front panel (see PAR. 3.3.6)

S disables the output and puts the

TRIGGER PORT
(connector A1J3)

2

3 NOT USED
4 EXT. TRIGGER INPUT

LON: Logic 0 or short = output is on (enabled); Logic 1 or open
(not connected) = output is off (disabled). LON is shown as LowI-
sOn when configuring from front panel (see PAR. 3.3.6)

LOFF: Logic 0 or short = output is off (disabled); Logic 1 does not
enable the output; STANDBY key or remote OUTP ON command
must be used to enable the output. LOFF is shown as LowIsOff
when configuring from front panel (see PAR. 3.3.6)

HOFF: Logic 1 or open (not connected) = output is off (enabled);
Logic 0 does not enable the output; STANDBY key or remote
OUTP ON command must be used to enable the output. HOFF is
shown as HighIsOff when configuring from front panel (see PAR.

3.3.6)

OFF - Pin 2 is disabled and the unit does not respond to signals
applied to this pin. Either OFF or STANDBY is required if using
OUTP ON and OUTP OFF commands to control the output.

Logic 0 causes a trigger event. Logic 1 (TTL or 5V CMOS level)
rearms the trigger feature.

BOP HIPWR 091719 2-3

TABLE 2-4. EXTERNAL PROTECTION CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

Cathode of LED optocoupler (through a 510 ohm resistor) which is
used for external isolated shutdown. Anode of LED is connected to
(A2A5J7) pin 2. A positive voltage (3.5 to 15V) at pin 2 (referenced to

1 SD_EXT_K

2 SD_EXT_A

EXT. PROTECT PORT

(connector A2A5J7)

NOTE:Upon receipt of LIST:SET:TRIG command (P AR B.89), the Output Off flag (EXT_C/EXT_E) no longer represents output on/

off state. Instead, this signal can be used to trigger an external device. The transistor state (conducting or not conducting)
and the pulse width duration is controlled by the LIST:SET:TRIG command. Upon receipt of LIST:CLE command (PAR
B.57) the Output Off flag reverts to representing output on/off status as described above.

3 PG_EXT_C

4 PG_EXT_E

5 EXT_C

6 EXT_E

pin 1) shuts down the unit functionality. The unit remains powered,
but no output is available and the red front panel FAULT LED will go
ON. Response is relatively fast (100
operation it is necessary to cycle power off, then on (preferred) or
briefly press the RESET key on the front panel keypad.

Anode of LED optocoupler which is used for external isolated shut­down. (See pin 1 above.)

Collector of optocoupler-transistor which is used for external isolated
“power OK” flag. Transistor emitter is connected to (A2A5J7) pin 4.
When unit is operating normally, transistor is saturated. Current
through transistor should not exceed 5mA and supply voltage should
not exceed 15V.

Emitter of optocoupler-transistor which is used for external isolated
“power OK” flag. (See pin 3 above.)

Collector of optocoupler-transistor which is used for external isolated
“Output OFF” flag. Transistor emitter is connected to (A2A5J7) pin 6.
When output is OFF, transistor is saturated. Current through transis­tor should not exceed 3mA and supply voltage should not exceed
15V. See NOTE below for alternate function.

Emitter of optocoupler-transistor which is used for external isolated
“output OFF” flag. (See pin 5 above.)

S max.). To resume normal

TABLE 2-5. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 RTS Request To Send (protocol not used)
2RXD Receive Data

RS 232

PORT

A1J5

3 TXD Transmit Data
4 LOGIC GND Logic Ground
5 LOGIC GND Logic Ground
6 DSR Data Set Ready

TABLE 2-6. PARALLEL/SERIAL CONTROL OUT PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 SGND Local signal ground

PARALLEL/SERIAL

CONTROL OUT

PORT

(A2A5J4)

2 No connection

S_IN_PARALLEL Relayed signal for daisy chain connection. (See PARALLEL/SERIAL IN

3
4 No connection

PORT (A2A5J3) pin 3)

2-4 BOP HIPWR 091719

TABLE 2-7. PARALLEL/SERIAL CONTROL IN PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

1 SGND Local signal ground
2 No connection

S_IN_PARALLEL Input for programming output current of a parallel-connected slave. Pro-

PARALLEL/SERIAL

CONTROL IN PORT

(A2A5J3)

3

4 No connection
5 No connection

IOUT_M_UNIT Output for programming slave current when the unit is a parallel-con-

6

7 No connection

S_IN_SERIAL Input for programming output voltage of a series-connected slave. Pro-

8

vided by master unit.
Level: –10V to +10V controls the current between –I

nected master
Level: –10V to +10V programs slave current to –I

vided by master unit or from previous slave if multiple slaves connected.
Level: –E
+E

Onom

Onom

to –E

to +E

Onom

controls programs output voltage from

Onom

.

TABLE 2-8. PARALLEL/SERIAL PROTECT IN PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

SD_A Anode of LED optocoupler which is part of protection circuit for parallel

or series combination. Cathode of LED is connected to PARALLEL/
SERIAL PROTECT OUT PORT (A2A5J2) pin 1 (see Table 2-9). When
activated, the optocoupler shuts down the unit. LEDs from all units of the
parallel or series combination are connected in series.

parallel or series combination. Transistor emitter is connected to P ARAL­LEL/SERIAL PROTECT OUT PORT (A2A5J2) pin 2 (see Table 2-9).
When unit is operating normally, transistor is saturated. T ransistors from
all units of the parallel or series combination are connected in series.

energy from the master unit.

a short between pins 6 and 7 (GND) is required for the unit to operate.
Refer to PAR. 2.7.3 for details and to enable the feature..

power up to prevent shutdown during power up.

PARALLEL/SERIAL

PROTECT IN PORT

(A2A5J1)

1

PGOUT_C Collector of optocoupler transistor which is part of protection circuit for

2

SD_RETURN Completes return connection for the protection circuit which receives

3
4 No connection

5 No connection

FAIL SAFE This input can be used as a fail safe/interlock protection. When enabled,

6

7 GND Local power ground.

ALLOW EXT_ERR Provides energy for the protection circuit (master unit only). Disabled at

8

Onom

Onom

to +I

to +I

Onom

Onom

.

.

TABLE 2-9. PARALLEL/SERIAL PROTECT OUT PORT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

SD_K Cathode of LED optocoupler which is part of protection circuit for parallel

1

PGOUT_E Emitter of optocoupler transistor which is part of protection circuit for

2

PARALLEL/SERIAL

PROTECT OUT

PORT

(A2A5J2)

BOP HIPWR 091719 2-5

SD_RETURN Relayed connection, provides return for the protection circuit which

3
4 No connection

5 No connection
6 No connection
7 No connection
8 No connection

or series combination. (See IN port (A2A5J1) pin 1,Table 2-8.)

parallel or series combination. (See IN port (A2A5J1) pin 2,Table 2-8.)

receives energy from the master unit.

TABLE 2-10. ANALOG I/O PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

CAUTION: it is recommended that sou rce power of external equipment connected to the Analog

Port be applied through an isolating transformer To avoid ground loops or possible
damage to the BOP due to incorrect equipment a-c wiring (e.g., defeating of ground
connection).

1NC

External input signal, TTL logic referenced to pin 9, controls the mode
of operation when using external reference (goes to the digital board

2VM-/CM

3 IOUT_DMM

4 SGND Signal Ground used for IOUT_DMM (pin 3) return.

5 – I_LIM_EXT

ANALOG I/O

PORT

6 – V_LIM_EXT

A2A5J6

7NC
8NC
9 GND Ground - Used for VM-/CM (pin 2) return

10 SGND Signal Ground (used for EXT_REF (pin 11) return

11 EXT_REF

12 GND1 Ground (Used for pin 5, 6, 13 and 14 return)

13 +I_LIM_EXT

14 +V_LIM_EXT

15 NC

NOTE 1. When disabled, the external limit channels are automatically set 20% higher than BOP nominal references.

that changes VM-/CM signal). Logic 0 (or pin grounded) = current
mode, logic 1 (or pin not connected, the default) = voltage mode (see
PAR. 3.4.3).

Output analog signal through 2K ohm resistor referenced to pin 4 for
monitoring overall output current, 0V to ± 10V corresponds to zero to ±
full scale current.

Analog input signal referenced to pin 12, 0V to +10V sets the negative
current limit between zero and –I
maximum current (e.g., for BOP 36-28MG +10V sets negative current

, +10V corresponds to rated

Omax

limit to –28A) (see PAR. 3.4.5). Open = disabled (see NOTE 1).
Analog input signal, 0V to +10V, sets the negative voltage limit

between zero and –E

, +10V corresponds to rated maximum volt-

Omax

age (e.g., for BOP 36-28MG +10V sets negative voltage limit to –36V).
Open = disabled. (See PAR. 3.4.5.) Open = disabled (see NOTE 1).

External analog reference signal referenced to pin 10, used for both
voltage mode and current mode, 0V to ±10V corresponds to zero to ±
rated nominal (full scale), voltage or current (see PAR. 3.4.4.1).

Analog input signal referenced to pin 12, 0V to +10V sets the positive
current limit between zero and I
mum current (e.g., for BOP 36-28MG +10V sets positive current limit to

; +10V corresponds to rated maxi-

Omax

+28A) (see PAR. 3.4.5). Open = disabled (see NOTE 1).
Analog input signal, 0V to +10V sets the positive voltage limit between

zero and E

, +10V corresponds to rated maximum voltage (e.g.,

Omax

for BOP 36-28MG +10V sets positive current limit to +36V. Open = dis­abled. (See PAR. 3.4.5.) (see NOTE 1).

2-6 BOP HIPWR 091719

TABLE 2-11. IEEE 488 PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

IEEE 488

PORT

J5

1D
2D
3D
4D
5 EOI End or Identify
6 DAV Data Valid
7 NRFD Not Ready for Data
8 NDAC Not Data Accepted

9 IFC Interface Clear
10 SRQ Service Request
11 ATN Attention
12 SHIELD Shield
13 D
14 D
15 D
16 D
17 REN Remote Enable
18 GND Ground (signal common)
19 GND Ground (signal common)
20 GND Ground (signal common)
21 GND Ground (signal common)
22 GND Ground (signal common)
23 GND Ground (signal common)
24 LOGIC GND Logic Ground

I01 I/O Line
I02 I/O Line
I03 I/O Line
I04 I/O Line

I05 I/O Line
I06 I/O Line
I07 I/O Line
I08 I/O Line

2.3 PRELIMINARY OPERATIONAL CHECK

A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping.

Refer to Figures 2-1 and 3-1 for location of operating controls and electrical connections. Tables
3-1 and 3-2 explain the functions of operating controls/indicators and keypad keys, respectively.
Refer to PAR. 3.2 for a description of basic operating techniques.

1. With POWER switch set to off position, connect the power supply to source power (see PAR.

2.5.2).

2. With no load connected, set POWER switch to the ON position. Each time the unit is turned
on an internal self-test is performed. The alphanumeric display (LCD) shows the processor
firmware revision history and lists various tests performed during the internal self-test. As
each test is completed, PASS or FAIL is displayed. If all tests pass, the unit goes into the
default mode. If a failure occurs, the failure is displayed. Figure 3-4 shows the factory config­ured power on defaults displayed on the LCD.

BOP HIPWR 091719 2-7

3. Connect a digital voltmeter (DVM) (resolution and accuracy of 0.01% or better) to the
OUTPS and COMS terminals at the rear panel terminal block.

4. Use the keypad to enter the rated maximum voltage of the power supply (e.g., enter 36 for a
model BOP 36-28MG) and press ENTER. If STANDBY indicator is lit, press STANDBY key.

5. Verify DVM voltage reading agrees with programmed voltage within 0.03% of rated maxi­mum voltage and agrees with displayed voltage on LCD within 0.05% of rated maximum
voltage.

2.4 INSTALLATION

2.4.1 RACK MOUNTING

The unit is shipped with four feet attached to bottom of the unit which must be removed prior to
installation (see Figure 1-2). The BOP is designed to be rack mounted in a standard 19-inch
wide rack using the mounting ears (supplied) attached to the front panel (see Figure 1-2). Allow
a minimum of 7/8 in. (22.2 mm) above and below the unit to permit air intake necessary for
proper cooling of the unit. CAUTION: The rack must provide support at the rear (within 6

inches of the rear panel). Optional slides can also be used (see PAR. 2.4.2).

2.4.2 SLIDE INSTALLATION

Optional slides are available for rack mounting (see Table 1-4 and Figure 1-2).

2.5 WIRING INSTRU CTIO NS

Interconnections between an a-c power source and a power supply, and between the power
supply and its load are as critical as the interface between other types of electronic equipment.
If optimum performance is expected, certain rules for the interconnection of source, power sup­ply and load must be observed by the user. These rules are described in detail in the following
paragraphs.

CAUTION: When working with active loads, the voltage or current of the active load

must not exceed the maximum voltage or current rating of the BOP. Other­wise the overvoltage or overcurrent pr otection will shut down the power sup­ply.

2.5.1 SAFETY GROUNDING

Local, national and international safety rules dictate the grounding of the metal cover and case
of any instrument connected to the a-c power source, when such grounding is an intrinsic par t of
the safety aspect of the instrument. The ground terminal of the source power connector (Figure
2-1) is connected to the chassis and the instructions below suggest wiring methods which com­ply with these safety requirements; however, in the event that the specific installation for the
power system is different from the recommended wiring, it is the customer's responsibility to
ensure that all applicable electric codes for safety grounding requirements are met. As a pre­caution, always connect the stud marked at the rear panel to proper ea rth ground.

2.5.2 SOURCE POWER CONNECTIONS

Source power is connected to the power supply via three-wire input power using the source
power mating connector supplied (see Table 1-3). See Table 1-2 for source power specifica­tions. This power supply operates from single phase a-c mains power (or between two phases

2-8 BOP HIPWR 091719

of 3-phase a-c mains power) over the specified voltage and frequency ranges (Table 1-2) with­out any need for range selection. The user must provide a properly sized and rated mains lead
(line cord) and service with a current rating compatible with the anticipated input current. Line
cords available as accessories are listed in Table 1-4. Kepco recommends #12 AWG (2,0 mm
diameter)

for input line cord.

2.5.3 D-C OUTPUT GROUNDING

Connections between the power supply and the load and sensing connections may, despite all
precautions such as shielding, twisting of wire pairs, etc., be influenced by radiated noise, or
“noise pick-up”. To minimize the effects of this radiated noise the user should consider ground­ing one side of the power supply/load circuit. The success of d-c grounding requires careful
analysis of each specific application, however , this recommendation can only serve as a general
guideline.

One of the most important considerations in establishing a successful grounding scheme is to
avoid GROUND LOOPS. Ground loops are created when two or more points are grounded at
different physical locations along the output circuit. Due to the interconnection impedance
between the separated grounding points, a difference voltage and resultant current flow is
superimposed on the load. The effect of this ground loop can be anything from an undesirable
increase in output noise to disruption of power supply and/or load operation. The only way to
avoid ground loops is to ensure that the entire output/load circuit is fully isolated from ground,
and only then establish a single point along the output/load circuit as the single-wire ground
point.

The exact location of the “best” d-c ground point is entirely dependent upon the spe cific applica­tion, and its selection requires a combination of analysis, good judgement and some amount of
empirical testing. If there is a choice in select ing eithe r the O UTPUT or CO MMO N outp ut ter mi­nals of the power supply for the d-c ground point, both sides should be tried, and preference
given to the ground point producing the least noise. For single, isolated loads the d-c ground
point is often best located directly at one of the output terminals of the power supply; when
remote error sensing is employed, d-c ground may be established at the point of sense lead
attachment. In the specific case of an internally-grounded load, the d-c ground point is automat­ically established at the load.

The output and common terminals of BOP power supplies are d-c isolated (“floating”) from the
chassis in order to permit the user maximum flexibility in selecting the best single point ground
location. Care must be taken in measuring the ripple and noise at the power supply: measuring
devices which are a-c line operated can often introduce additional ripple and noise into the cir­cuit.

There is, unfortunately, no “best” method for interconnecting the load and power supply. Individ­ual applications, location and nature of the load require careful analysis in each case. Ground­ing a single point in the output circuit can be of great importance. It is hoped that the preceding
paragraphs will be of some assistance in most cases. For help in special applications or difficult
problems, consult directly with Kepco's Application Engineering Department.

BOP HIPWR 091719 2-9

2.5.3.1 EARTH-GROUND CONFIGURATION

When connecting a programming device to the BOP it is critical that only a single earth-ground
point is connected. Figure 2-2 shows proper earth-ground connections for typical configurations,
as well as an illustration of the consequences of multiple earth ground points. IF THE FOLLOW­ING CAUTION IS NOT OBSERVED, ANY DAMAGE TO THE UNIT IS THE USER’S RESPON­SIBILITY AND IS NOT COVERED UNDER THE WARRANTY.

CAUTION: Never connect the both the load terminal tied to the BOP COM terminal and

the programming device common to earth-ground. This allows a ground
loop current to flow within the BOP which will compromise accuracy. Cata­strophic damage to the BOP will result if the connection between BOP COM
and the load terminal connected to earth-ground is lost.

2.5.3.2 GROUNDING NETWORK CONFIGURATION

When the output is floating there is a tendency for large changes in output voltage to affect the
digital programming section, possibly resulting in an erroneous output. Decoupling capacitors
from each of the two output terminals to the chassis via a terminal block link form a grounding
network. The grounding network is designed to reduce high frequency n oise and ensure that the
digital programming section is not adversely affected by the dynamic swing of the output. The
power supply is shipped with the grounding network conn ected: a connection between terminals
TB1-4 (GND NET) and TB1-5 (GND). To disconnect the grounding network from the ou tput,
remove the connection across TB1-4 and TB1-5.

2.5.4 POWER SUPPLY/LOAD INTERFACE

The general function of a voltage- or current-stabilized power supply is to deliver the rated out­put quantities to the connected load. The load may have any conceivable characteristic: it may
be fixed or variable, it may have predominantly resistive, capacitive or inductive parameters; it
may be located very close to the power supply output terminals or it may be a consider a ble dis­tance away. The perfect interface between a power supply and its load would mean that the
specified performance at the output terminals would be transferred without impairment to any
load, regardless of electrical characteristics or proximity to each other.

The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical
interfaces definitely fall short of the ideal. All voltage-stabilized power supplies have a finite
source impedance which increases with frequency, and all current-stabilized power supplies
have a finite shunt impedance which decreases with frequency. The method of interface
between the power supply outp ut and the load must, therefore, take into acc ount not only the
size with regard to minimum voltage drop, but the configuration with regard to minimizing the
impedance introduced by practical interconnection techniques (wire, bus bars, etc.). The series
inductance of the load wire must be as small as possible as compared to the source inductance
of the power supply: although the error sensing connection to the load compensates for the d-c
voltage drop in the power leads, it canno t compensate for the undesirable output effects of the
power lead inductance. These lead impedances (both power and sensing leads) are especially
important if the load: is constantly modulated or step-programmed; has primarily reactive char­acteristics; or where the dynamic output response of the power supply is critical to load perfor­mance.

2-10 BOP HIPWR 091719

EXT
REF

SGND

ANALOG
I/O PORT

COM

OUT

LOAD

I

OUT

PROGRAMMING
DEVICE

BOP 1KW

LOAD

SGND

COM

EXT
REF

PROGRAMMING
DEVICE

BOP 1KW

OUT OUT

I

CONNECTION

MISSING

ANALOG

I/O PORT

With two earth-ground points as
shown, a ground loop allows return
current to flow through the internal
circuits of the BOP as well as through

the proper return path.

With two earth-ground points as
shown, if the return connection from
the load to BOP COM is missing, all
the output current flows through the
internal circuits of the BOP causing
catastrophic damage to the BOP.

WRONG!

LOAD

SGND

COM

EXT
REF

PROGRAMMING
DEVICE

ANALOG
I/O PORT

BOP 1KW

OUT OUT

I

EXT
REF

PROGRAMMING
DEVICE

ANALOG
I/O PORT

SGND

COM

BOP 1KW

OUT

OUT

I

LOAD

EXT
REF

PROGRAMMING
DEVICE

ANALOG
I/O PORT

OUTOUT

SGND

COM

LOAD

BOP 1KW

I

3043801

CORRECT!

BOP HIPWR 091719 2-11

FIGURE 2-2. EARTH GROUND CONNECTION RECOMMENDATIONS

2.5.5 LOAD CONNECTION - GENERAL

Load connections require wires that are properly rated for the nomina l outpu t cur rent of the unit.
Load connections to the BOP power supply are achieved via the OUTPUT and COMMON bus
bar-type terminals located on the rear panel. A barr ier strip is pr ovided at th e rear panel for con­nection of the sense wires to the load (for remote sensing or multiple unit applications). See
PAR. 2.5.3.1 and Figure 2-2 for earth-ground recommendations.

CAUTION: Never connect the load to the sense terminals. Monitoring instruments (e.g.,

DVM, etc.) are the only external equipment that may be safely connected to
the sense terminals.

CAUTION: Never connect the both the load terminal tied to the BOP COM terminal and

the programming device common to earth-ground. This allows a ground
loop current to flow within the BOP which will compromise accuracy. Cata­strophic damage to the BOP will result if the connection between BOP COM
and the load terminal connected to earth-ground is lost.

NOTE REGARDLESS OF OUTPUT CONFIGURATION, EITHER LOCAL OR REMOTE OUT-

PUT SENSE LINES MUST BE CONNECTED FOR OPERATION.

1. OBSERVE POLARITIES: The OUT S sensing wire must be connected to the OUT-
PUT load wire, and the COM S sensing wire must be connected to the COMMON load
wire.

2. IF LOCAL SENSING IS USED, INSTALL LINKS (see Figure 2-3).

CAUTION: The safety features incorporated into the BOP to handle energy from Active

loads are unable to protect the power supply or t he loa d if input p owe r to th e
BOP is lost or if the BOP malfunctions. It is recommended that the user mon­itor “Power OK” flag pins 3 and 4 of the external Protect Port (see Table 2-4)
and implement a fast-acting means of disconnecting capacitive loads or
crowbarring inductive loads to preven t damage to both t he BOP an d the load
in the event of input power loss.

2.5.6 LOAD CONNECTION USING LOCAL SENSING

Figure 2-3 shows a typical configuration using local sensing and a grounded load; for local
sensing with an isolated (“floating”) load, do not install the ground connection (see Figure 2-3,
Note 2).

2.5.7 LOAD CONNECTION USING REMOTE SENSING

Figure 2-4 shows a typical configuration using remote sensing and a grounded load; for remote
sensing with an isolated (“floating”) load, do not install the ground connection (see Figure. 2-4,
Note 2).

2.6 COOLING

The power devices used within the power supply are maintained within their operating tempera­ture range by means of internal heat sink assemblies and by two cooling fans. Periodic cleaning
of the power supply interior is recommended. If the power supply is located within a confined
space, take care that the ambient temperature, which is the temperature of the air immediately
surrounding the power supply, does not rise above the specified limits (see Table 1-2).

Use #22 AWG wire, twisted pair for remote sense connections.

2-12 BOP HIPWR 091719

2.7 SETTING UP THE UNIT

The following paragraphs describe the connections and initial BOP setup needed to operate in
the desired mode.

2.7.1 CONSIDER THE LOAD TYPE

The BOP can be configured to respond differently to the Output OFF command, depending on
whether the load is defined a s Activ e, Re sistive or Batte ry. Refer to PAR. 3.3.7 to configure this
setting.

2.7.2 SETUP FOR LOCAL OPERATION

With all power off, connect the load to the BOP using either local or remote sensing (refer to
PAR. 2.5). If units are to be connected in series or parallel, refer to PAR. 2.7.6.2.) Then refer to
PAR. 3.2 for power supply basics and local operation. The factory default configuration allows
local operation with no further setup required.

FIGURE 2-3. LOAD CONNECTIONS, LOCAL SENSING

BOP HIPWR 091719 2-13

FIGURE 2-4. LOAD CONNECTIONS, REMOTE SENSING

GND
NET

OUT

MON

N / C OUT

S

COM

S

COM
MON

GND

WARNING

2.7.3 SETUP FOR FAIL SAFE/INTERLOCK PROTECTION

This feature requires disassembly and modification of the unit and
implementation is permitted only by authorized service personnel.

To enable the Fail Safe/Interlock Protection feature, refer to the Service Manual for component
locations and remove the cover of the unit. Locate board A2A5, then cut or unsolder the test
loop wire of TP10 on A2A5.

Once the feature is enabled, a short is required across pins 6 and 7 of the Parallel/Serial Protect
In Port for the unit to function (see simplified diagram, Figure 2-5). For example, installing a local
jumper across pins 6 and 7 of the Parallel/Serial Protect In Port mating connector will cause the
unit to shut down with the red FAULT LED lit if the Parallel/Serial Protect In Port mating connec­tor is disconnected.

Once the unit shuts down, even though power is applied to th e in put, no tr ansfer of powe r to th e
output will occur. To restart the unit it is necessary to either toggle the POWER ON/OFF input
circuit breaker on the front panel or, on units with a front pa nel keypad, press the RESET key.

2-14 BOP HIPWR 091719

Another example is to apply the s hort via a rem ote NC relay contact c losur e so t hat if eithe r the
remote relay deenergizes, or the Parallel/Serial Protect In Port mating connector becomes
unplugged, the unit shuts down and the red FAULT LED will be lit.

FIGURE 2-5. FAIL SAFE FEATURE, SIMPLIFIED SCHEMATIC DIAGRAM

2.7.4 SETUP FOR REMOTE OPERATION VIA GPIB (MG MODELS ONLY)

With all power off, connect the load to the BOP using either local or remote sens ing. If u nits are
to be connected in series or parallel, refer to PAR. 2.7.6.2. Connect the GPIB connector to the
GPIB port (see Figure 2-1 and Table 2-1). Turn power on and refer to PAR. 3.2 for power supply
basics and PAR. 3.5 for remote mode programming.

CAUTION: To ensure correct operation, do not remove the GPIB cable from the BOP

after a Query is processed. Ensure that the last command is a non-query
such as *CLS before removing the GPIB cable. Otherwise, power to the BOP
and/or the host computer may need to be cycled OFF then ON to restore
proper operation.

The default GPIB address is 6; to change it refer to PAR 3.5.3.2. The default configuration
allows both local and remote operation; to prevent local operation once the unit is being con­trolled from the GPIB, see PAR. B.162. Refer to PAR. 3.5.3.2 to configure the GPIB Port.

SCPI programming is described in PAR. 3.6; Appendices A and B provide syntax for SCPI com­mon and subsystem commands and queries implemented in this unit. All the features descr ibed
for Local Mode operation can be accomplished using remote SCPI commands.

2.7.5 SETUP FOR REMOTE OPERATION VIA RS 232C

With all power off, connect the load to the BOP using either local or remote sensing (refer to
PAR. 2.5). If units are to be connected in series or parallel, refer to PAR. 2.7.6.2. Connect the
RS 232 connector to the RS 232 port (see Figure 2-1 and Table 2-1). Turn power on and refer to
PAR. 3.2 power supply basics and PAR. 3.5.6 for RS 232 operation. SCPI programming is
described in PAR. 3.2; Appendices A and B provide syntax for SCPI common and subsystem
commands and queries implemented in this unit. Refer to PAR. 3.5.3.3 to configure the RS 232
Port.

BOP HIPWR 091719 2-15

2.7.6 SETUP FOR REMOTE OPERATION VIA LAN (ME MODELS ONLY)

With all power off, connect the load to the BOP using either local or remote sensing (refer to
PAR. 2.5). If units are to be connected in series or parallel, refer to PAR. 2.7.6.2.

Connect the BOP to a Microsoft Windows-based computer via the LAN connector (see Figure 2­1 and Table 2-1). Use a standard ethernet cable, whether using a router or hub, or connecting
the BOP 1KW directly to a computer. The BOP 1KW-ME is Auto-MDI-X enabled and does not
require a crossover cable for direct connection. For Unix and Safari connections see ???

2.7.6.1 FINDING KEPCO POWER SUPPLIES ON THE LAN.

The PSfind utility can be downloaded from the Kepco web site at

www.kepcopower.com/drivers/drivers-dl3.htm#bop1k

This utility finds all operational Kepco power supplies connected to the LAN and then shows the
MAC and IP addresses of the models found.

To run the utility from your PC download the psfind.zip file to your computer. Extract psfind.exe
from the zip file to a location of your choice, then double-click psfind.exe to run the application.
A separate window opens as shown in Fig ure 2- 6. Once th e search is completed, all fo und unit s
are displayed in the Select a Unit window (the MAC address appears in parentheses). If you do
not see your device in the Select a U nit window or if the icon to the left of the selected instru­ment is red (not green), make sure it is turned on and connected to the network, then click the

Search Again button.

FIGURE 2-6. PS FIND SCREEN

2.7.6.2 BONJOUR-ENABLED DISCOVERY

Figure 2-7 shows the BOP 10-100ME found among other Bonjour (MDNS)-enabled devices.
Most printers and all LXI Version 1.4-compliant devices support the industry standard discovery
methods requiring no user action.|

2-16 BOP HIPWR 091719

FIGURE 2-7. DISCOVERY USING SAFARI BROWSER WITH BONJOUR INSTALLED

2.7.6.3 LXI DISCOVERY

Figure 2-8 shows a Kepco BOP 10-100ME power supply found on the LAN using the LXI Dis­covery Tool.

FIGURE 2-8. TYPICAL SCREEN USING LXI DISCOVERY TOOL

2.7.6.4 LAUNCH WEB INTERFACE

After finding the unit and selecting the desired unit on the LAN (see PAR. 2.7.6.1), click the
Launch Webpage button to open the BOP 1KW-ME Instrument HOME PAGE (UNIT DESCRIP­TION) in your default browser (see Figure 2-9). You can also launch the web page in any
browser by entering the IP address as the URL.

BOP HIPWR 091719 2-17

NOTE: If source power to the BOP 1KW-ME is removed or lost while a browser window is

open, communication with the BOP 1KW-ME cannot be restored until the present
browser window is closed and a new window is opened.

Upon initial display of the web page, it is good practice to click the browser Refresh/Reload but­ton once to ensure that the power supply information displayed is up to date, and not prior infor­mation recalled from the browser cache.

Although most current browsers will work, Kepco recommends the following as fully supported:
Safari, IE 8.0 and higher and Firefox 1.0 and higher. Popup blocking must be disabled and
Javascript must be enabled for proper operation. If popup blocking is enabled, it may prevent
viewing of the help screens.

The BOP 1KW-ME Instrument Home page identifies the unit which has been accessed, includ­ing Manufacturer, Instrument, Description, LXI Version (1.4), Serial Number, Calibration Date,
Hostname, MAC Address, LXI Firmware Revision and TCP/IP Address. Click the HELP box at
the left of the screen for detailed e xplanations of each . These parameters ca n not be changed
by the user. The hostname ends with .LOCAL if the MDNS ha s been co mpletely re solved. This
feature allows for easy discovery through the MDNS or Bonjour common naming system.

Clicking the ID INSTRUMENT box at the left of the screen, causes the physical LAN indicator on
the rear panel of the selected unit to blink (see Figure 2-1), allowing visual confirmation as to
which unit is selected. This is especially important if more than one unit is found on the LAN.

FIGURE 2-9. WEB INTERFACE HOME PAGE (UNIT DESCRIPTION)

2.7.6.5 LAN CONFIGURATION USING WEB INTERFACE

From the Web Interface Home Page (Figure 2-9) click on CONFIGURE LAN at the left to view
the LAN Configuration page (Figure 2-10). The parameters that can be configured from this
page are Host Name (DHCP), Description, IP Address, Subnet Mask address, Default Gateway
Address, and DNS Server Address. Separate check-boxes allow enabling of DHCP, AUTOIP
and PING. Descriptions of these terms can be viewed by clicking the HELP box at the left. If a

2-18 BOP HIPWR 091719

data entry fault condition exists, an alert window indicates the type of fault. Click OK to close the
window; the SUBMIT button is disabled until the fault is corrected.

There are three passwords shown on this page which control access to the unit . All three web
passwords described below are case sensitive.

NOTE: In cases where multiple users are expected to have access to the units, it is recom-

mended that password access be used to restrict control of the unit to one user (func-
tioning as a bus controller), while allowing other users viewing access. Allowing
multiple users to issue commands to a sing le un it can caus e unpr edictable re sults and
may cause the unit to lock up.

• The OPERATE INSTRUMENT password restricts the ability to modify the OPERATE
INSTRUMENT page settings. The settings can still be viewed while password protected

• The CONFIGURE INSTRUMENT password restricts the ability to change some
INSTRUMENT configuration parameters shown on the CONFIGURE INSTRUMENT
page.

• The CONFIGURE LAN password restricts the ability to change the LAN configuration
parameters shown on the CONFIGURE LAN page (Figure 2-10.)

FIGURE 2-10. WEB INTERFACE CONFIGURE LAN PAGE

The factory default is that passwords are not needed to access password-protected areas and
none of the three passwords are established. To set a password for the first time, le ave the
CURRENT field blank, enter the new password in the NEW and REPEAT fields, then click SUB­MIT. Subsequent changes require the current password to be entered in the CURRENT field. If
a password is lost or forgotten, the factory default state (no password required) can be restored
by pressing the LAN Reset button on the BOP 1KW-ME (see Figure 2-1 and Table 2-1.

BOP HIPWR 091719 2-19

To change a parameter, enter the correct data and/or click the appropriate check-boxes, then
click SUBMIT to save the change or NO CHANGE to clear and reload the page without saving.
If the data is not entered within 20 seconds after the last keystroke, the data will revert to the
previous value. If the LAN CONFIGURATION password was set, you will be prompted to enter
the password before the changes are accepted.

When SUBMIT is clicked after new IP address information is en tered, the front panel LAN ind i­cator blinks rapidly while the unit validates the IP address. If the address is valid, the browser
returns to the INSTRUMENT HOME page (Figure 2-9). If the address entered is already in use,
the following note appears towards the top of the page:

NOTE: IP Address is in use.

Click CONFIGURE LAN and choose another IP to correct.

An IP address that is not already in use must be entered and submitted, otherwise the browser
will lock, requiring the browser to be closed and reopened.

2.8 MULTIPLE UNIT CONFIGURATIONS (MG MODELS ONLY)

Parallel, series and series-parallel configurations of identical BOP MG units increases the rated
voltage and current range of the power supply (BOP ME units do not support multiple unit con­figurations.) Up to five units can be connected in parallel to increase the current: I
N

= I

P

MAX (parallel combination)

can be connected in series to increase the voltage: E

where NP = number of units in parallel. Similarly, up to three units

MAX (one unit)

where NS = number of units in series. In addition, identical units may be connected in both
series and parallel. The 2 X 2 configuration, two parallel branches of two series-connected
power supplies, doubles the ou tput voltage and doubles the output current of a single unit. The
3 X 2 configuration, two parallel branches of three series-connected power supplies, triples the
output voltage and doubles the output current of a single unit. Multiple unit configurations
require the appropriate Interconnection Kit (see Table 1-4).

x NS = E

MAX (one unit)

MAX (parallel combination)

x

For all multiple unit configurations the master reports the system output p arameters: volt age and
current; the slaves report the main channel parameter: voltage for series configurations or cur­rent for parallel configurations.

Additional hex nuts are provided in the interconnection kit for sufficient cable separation so they
can be oriented as needed to fit onto the terminal.

NOTE: Mul tiple un it configuration s require that all indi vidual u nit s be proper ly calibrate d. (Unit s

shipped from Kepco have been factory-calibrated.) If not, refer to Section 4 to calibrate
the individual units prior to connecting them in parallel or series. Using calibrated units
ensures that the multiple unit configuration is calibrated; calibrating the multiple unit
configuration is neither needed nor possible.

2-20 BOP HIPWR 091719

2.8.1 MULTIPLE UNIT CONNECTIONS

Before connecting the units in parallel or in series, configure each for maste r or sla ve (see PAR.

2.8.4), and save for power up. Then tur n of f the unit s and pro ceed with the p arallel or series con­nection. Figures 2-11 (local sensing) and 2-12 (remote sensing) show the connections for three
parallel-connected units; Figures 2-13 (local sensing) and 2-14 (remote sensing) show the con­nections for three series-connected units. These figures allow other configurations, e.g., five
parallel-connected units or two series connected units, etc. to be easily deduced. Figure 2-19
shows the connections for a typical 3 X 2 (two parallel branches each consisting of three series­connected units) configuration, as well as simplified diagrams showing required arrangements
for 2 X 2. Consult factory for configurations requiring more than two units in parallel or series.

CAUTION: For both parallel and series configurations, remove links between (COM S)

and (COM OUT) terminals of all slaves to prevent damage to the unit and
maintain system accuracy. Make sure to accurately follow Figures 2-11
through 2-14 for proper connection of the units.

The following connections are required.

• Power cables

• Sense connections (either local or remote)

• All interconnection cables and terminations required for parallel, series, 2 X 2 or 3 X 2
configurations are supplied in the applicable Interconnection Kit (see Table 1-4 for part
number).

BOP HIPWR 091719 2-21

FIGURE 2-11. PARALLEL CONFIGURATION, LOCAL SENSING, TYPICAL

2-22 BOP HIPWR 091719

FIGURE 2-12. PARALLEL CONFIGURATION, REMOTE SENSING, TYPICAL

BOP HIPWR 091719 2-23

GND
NET

OUT
MON

N / C OUT

S

COM

S

COM
MON

GND

GND
NET

OUT

MON

N / C OUT

S

COM

S

COM
MON

GND

FIGURE 2-13. SERIES CONFIGURATION, LOCAL SENSING, TYPICAL

2-24 BOP HIPWR 091719

GND
NET

OUT

MON

N / C OUT

S

COM

S

COM
MON

GND

GND

NET

OUT
MON

N / C OUT

S

COM

S

COM
MON

GND

FIGURE 2-14. SERIES CONFIGURATION, REMOTE SENSING, TYPICAL

BOP HIPWR 091719 2-25

2.8.2 MULTIPLE UNIT PROTECTION

For multiple unit configurations it is necessary to configure the protection so that a fault will shut
down all the interconnected power supplies. Figure 2-15 is a simplified diagram showing typical
interconnections for master/slave configurations.

2.8.3 MULTIPLE UNIT SOURCE POWER

When multiple units are connected in series or parallel, the individual power supplies of the sys­tem may be connected to different phases of a 3-phase a-c power source.

FIGURE 2-15. TYPICAL MASTER/SLAVE PROTECTION INTERCONNECTIONS

Upon startup, PAR/SER PROT IN PORT pin 8 of the master goes low, and stays low until all
slaves are powered up. Normal power up of a unit causes the transistor connecting PAR/SER
PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 to conduct. The transistors of all
units are connected in series, effectively shorting out all the shutdown diodes (the shutdown
diodes of all units are also connected in series) connecting PAR/SER PROT IN POR T pi n 1 an d
PAR/SER PROT OUT PORT pin 1. After all the units are powered up and operating normally,
the low at PAR/SER PROT IN PORT pin 8 changes to high, but the conducting transistors keep
the voltage at pin 8 low and the diodes are cut off. If a fault occurs, the transistor between PAR/
SER PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 of the defective unit is cut of f,
allowing current to flow through the shutdown diodes. This develops internal shutdown signals
that shut down all units.

2-26 BOP HIPWR 102419

2.8.4 CONFIGURING PARALLEL, SERIES, 2 X 2 OR 3 X 2 COMBINATIONS

NOTE: Successfully configuring the unit from Standalone to Parallel, Series, 2 X 2 or 3 X 2 will

reset all NVRAM variables to factory defaults and delete all saved setups and saved
waveforms.

1. To configure a unit to be designated as a slave proceed as follows:
a. Turn on power only to the unit to be designated as a slave.

b. From the power-up screen press

Parallel and press

! to view the Multiple Units menu (see Table 2-12). If required, enter

password (see PAR. 3.2.4.3) before continuing.

c. From the Multiple Units menu, highlight Configuration (use ADJUST control or the

or U keys) and press ! to modify. When prompted, enter ADMIN2 password (see PAR.

3.2.4.3). Select Series, Parallel, Master 2X2 or Master 3X2 and press
the change.

d. If either Series or Parallel were selected in step d above, Connection Type shows

Series or Parallel as selected. Highlight Unit Type and press
light SLAVE #1 and press

TABLE 2-12. MULTIPLE UNITS MENU FUNCTIONS

SETTING

CONFIGURATION STANDALONE

UNIT TYPE
(visible for parallel and
series selections only)

FAULT RESTART ENABLE

CHOICES

(BOLD = Factory Default)

PARALLEL

SERIES
MASTER 2 X 2
MASTER 3 X 2

STANDALONE

MASTER +1
MASTER +2
MASTER +3
MASTER +4

SLAVE #1
SLAVE #2
SLAVE #3
SLAVE #4
SLAVE #5

DISABLE

% to enter the General Setup Menu. Highlight Series/

Y

$ to apply

! to modify. High-

$ to apply the change.

FUNCTION

STANDALONE - Unit operates independently, no additional units connected.
PARALLEL - Unit to be configured for parallel operation; opens UNIT TYPE
and CONNECTION TYPE options shown below. Used when units are con­nected in parallel (increase output current) (see NOTE below).
SERIES - Unit to be configured for series operation; opens UNIT TYPE and
CONNECTION TYPE options shown below. Used when units are connected
in series (increase output voltage) (see NOTE below).
MASTER 2 X 2 - Unit configured as master in control of two parallel branches
comprised of two series connected units. Used when units are connected in
parallel and series to double output voltage and current (see NOTE below).
MASTER 3 X 2 - Unit configured as master in control of two parallel branches
comprised of three series connected units. Used when units are connected in
parallel and series to triple output voltage and double output current (see
NOTE below).

STANDALONE - Unit operates independently, no additional units connected.
MASTER+1 - Unit is the master (controller), with one slave unit connected.
MASTER+2 - Unit is the master (controller), with two slave units connected.
MASTER+3 - Unit is the master (controller), with three slave units connected.
MASTER+4 - Unit is the master (controller), with four slave unit connected.
SLAVE #1 - Unit is slave no. 1 in configuration using one to five slave units.
SLAVE #2 - Unit is slave no. 2 in configuration using two to five slave units.
SLAVE #3 - Unit is slave no. 3 in configuration using three to five slave units.
For Master 2X2 and Master 3X2, slave #3 is always the unit controlled in par­allel by the master.
SLAVE #4 - Unit is slave no. 4 in configuration using four or five slave units.
SLAVE #5 - Unit is slave no. 5 in MASTER 3X2 configuration using two paral­lel branches comprised of three series-connected units.

When enabled, if a fault is detected on a slave, the system attempts to restart
the slave three times.

BOP HIPWR 091719 2-27

e. Exit the Multiple Units menu and return to main screen by pressing $ to save the settings

upon power-up. The unit goes to REMOTE mode, the status message reads MASTER
Module not found, the Fault indicator is lit, and the unit continues to beep once a min­ute until the master is found. The only function keys displayed are
the system is running,

CAUTION: The units are now configured as slave(s) to be controlled only by the master.

Do not use the slave keypad, RS 232 port or GPIB port to try to control the
slave(s). These ports are not disabled; commands to slave can cause incor­rect system operation. If OUTPut OFF is sent to a slave, the master will auto­matically reenable the output. All responses to queries will have “#n”
appended to the end, where n = slave number + 4. So for example an *IDN?
query to slave 1 will have #5 appended to the end of the response:

KEPCO,BOP 20-50 AUG 10 2016,A123456,6.43#5

2. Repeat step 1 as necessary to configure all slaves, but at step d highlight applicable SLAVE
# as appropriate. Each slave MUST have a different number that is sequentially

assigned.

3. Turn on the unit to be configured as a master and note that upon power up the FAULT light
will go on (this is normal). Proceed as follows:

! and % are no longer available; # functions normally.

!, # and %. While

a. From the power-up screen press

Parallel and press
prompted, enter ADMIN2 password (see PAR. 3.2.4.3) before continuing.

b. From the Multiple Units menu, highlight Configuration (use ADJUST control or the

or U keys) and press ! to modify. Select Series, Parallel, Master 2X2 or Master
3X2, press

c. If Series or Parallel was selected in step b above, Connection Type shows

Series or Parallel as selected above. Highlight Unit Type and press
Highlight Master +1
ter +4 not permitted for series connections) and press

d. Exit the Multiple Units menu by pressing

cycles. The display shows the master power-u p scree n (see Figure 2-16).

e. Turn off power to the master,

2.8.5 POWERING UP SERIES/PARALLEL COMBINATIONS

After the units have been connected (see PAR. 2.8.1, and 2.8.2), and configured (see PA R.

2.8.4), turn on power to all units.

NOTE: If all the slaves ar e Rev 4 and above, there is no requirement for powering the units on

or off in a particular order. When all units in the system are turned on, the system pow­ers up as described below. When any unit in the multiple system is powered off, then
powered on again, system power up is again initialized as described below.

$ to apply the change.

! to view the Multiple Units menu (see Table 2-12). When

, Master +2, Master +3, or Master +4 (Master +3, or Mas-

% to enter the General Setup Menu. Hig hlight Series/

$ to save the settings for subsequent power-up

Y

! to modify.

$ to apply the change.

If any slaves are Rev 3 or below, the slaves should be powered up af ter the master an d
powered down before the master.

The system powers up in four stages: initialization, protection, identification and power-up. The
entire sequence takes less than 15 seconds to complete from the time the last unit is turned on.

2-28 BOP HIPWR 091719

a. Initialization. During the initialization stage, the power-up master unit screen (Figure 2-16 )
should show the status of all slaves as “Faulted.” See Table 2-13 for an explanation of slave sta­tus messages during power-up.

b. Protection. The Protection stage is active when the message “Checking Protection Connec­tions” is displayed at the bottom of the power- up master module screen (Figure 2- 16). The pro ­tection connections are evaluated to ensure the ability to shut off the master. The protection
stage will advance to the identification stage when slave status is no longer “No Answer” and is
either “Faulted”, 'Mode Error” or “Unit Error, and the protection line is valid. If the protection
stage fails (indicated by an external fault indication), possible causes are a) an external device
(if used) connected to the protection circuits to initiate master shutdown, or b) improperly
installed protection cables.

c. Identification. The identification stage is active wh en the message “Checking Slave Configu­ration” is displayed at the bottom of the power-up master module screen (Figu re 2-16). NOTE: If
the unit does not enter the identification stage, the unit must be turned off, removed from the
system, and referred for service.

During the identification stage, the master verifies that all the slaves are present, and are of the
proper model, and are configured properly (series or parallel) for the configuration defined by
the master. At this time the power-up master module screen (Figure 2-16) will show the status of
all slaves as either “Faulted” “Standby” or “Not Used” and allow the system to advanc e to the
Power-up stage. Other status indications must be corrected before the system can advance to
the Power-up stage:

“No Answer” means the slave is not responding to requests from the master. Possible causes
are a) slave not powered up, b) bitbus cable not installed correctly or c) slave number incorrect.

“Unit Error” can be caused if the slave does not ma tch volt age (fo r paralle l) or curr ent (for series)
of the master

“Mode Error” is caused if the slave is not configured to series or parallel to match the configura­tion expected by the master.

“Faulted” is the normal status at this stage. A status of “Ready” is not valid at this stage. The
master will automatically set the units to “Faulted” if all slaves are in “Ready” condition.

If the identification stage is successful, the unit proceeds to the power-up stage as indicated by
the message “Powering U p Slaves,” at the b ottom of the power-up master module screen (Fig­ure 2-16).

d. Power-up. During the power-up stage, the following messages are briefly displayed in
sequence at the bottom of the power-up master module screen (Figure 2-16): “Powering Up
Slaves,” “Enabling Slave Outputs,” “Enabling External Protections” and “Checking for Faults in
System.”

When “Powering Up Slaves” is d isplayed, the slaves are started. Slave status on the master
power-up screen is listed as “S tandby” and the yellow Standby LED on the slave lights.

When “Enabling Slave Outputs” is displayed, the slave is powered up and the output is set to
either a) 0A and Voltage Protect Max for series slave or b) 0V and Current Protect Max for par­allel slave.

BOP HIPWR 091719 2-29

The power-up sequence continues as “Enabling External Protections” and “Checking for Faults

VOLTAGE

SOURCE

CPROTECT

VOLTAGE

CURRENT

in System” is displayed. When power-up is complete Slave status changes to “Ready” and the
yellow Standby LED on slaves goes out, indicating the slave is online. If the status of a slave
stays at “Standby” or changes to “Faulted,” the slave has not successfully powered up; a chirp­ing noise can be heard as the unit repeated attempts to power-up. If this does not stop, turn off
power and remove the faulted slave from the system.

If all the slaves are recognized as ready, after no longer than 15 seconds maximum the master
LCD reverts to the Power On Default screen (see Figure 2-17). The slaves display the Slave
Power On Default screen (see Figure 2-18), except the unit will be in Current Mode for parallel
configurations and Voltage mode for series configurati ons and the message will indicate the unit
is operating as a slave. The slave number appears at the lower right of the display. For instruc­tions to return the slave to standalone operation, refer to PAR. 2.8.7. The fault indicators on all
units are off.

FIGURE 2-16. MASTER POWER UP SCREEN

TABLE 2-13. SLAVE STATUS MESSAGE DEFINITIONS

Slave Status Message

Displayed on Master Power Up Screen

(see Figure 2-16)

Ready Unit is ready for operation.

STANDBY

No Answer Unit is not responding to polls via BITBUS.

Faulted Unit’s FAULT indicator is on to indicate a hardware error has been detected.
Not Used Unit is not part of parallel configuration
Unknown Waiting for interface communication

Mode Error Slave does not match parallel/series configuration expected by master.

Unit Error

If unit’s FAULT indicator is off, hardware error has NOT been detected, output is
ready to be turned on

Slave does match the voltage or current configuration expected by master. In
Series 2x2 and 2x3 configurations all units must match voltage and current spec­ifications. In some parallel systems the power supplies can have different current
capabilities. e.g., BOP 10-75MG and BOP 10-100MG can be mixed.

MEANING

2-30 BOP HIPWR 091719

1. Adjust the limits to reflect the increased power capacity of the multiple unit combination as

VOLTAGE
SOURCE

VOLTAGE

0000

0.

VOLTAGE
SOURCE

0.0000

follows:
a. From the main screen, press

b. From the General Setup menu, Highlight Max/Min Settings and press

restore defaults. Verify that the Max/Min settings reflect th e multiple un it combinatio n. For
example, for a parallel combination the values for +Current Max, –Current Min and ±Cur­rent Protect Max/Min now reflect the total current of the parallel combination. Voltage val­ues and limits reflect a series combination. For 2 X 2 and 3 X 2 combinations both current
and voltage are affected. NOTE: If desired, these limits may be lowered as describ ed for a
standalone unit (see PAR. 3.3.4).

c. Press

$ to save the settings upon power-up, then % to exit the Gene ral Setup menu and

return to the power-up screen

% to enter the General Setup Menu.

!. Press @ to

FIGURE 2-17. POWER ON DEFAULT SCREEN FOR MASTER UNIT

FIGURE 2-18. POWER ON DEFAULT SCREEN FOR SLAVE UNIT

BOP HIPWR 091719 2-31

2.8.6 OPERATING INSTRUCTIONS FOR MULTIPLE UNIT COMBINATIONS

1. Apply power to the multiple units. If the master is in STANDBY, depress STANDBY key on
the master to apply power to the output terminals. (To power down the combination, first
press STANDBY key on the master to disable the output, then turn off the slaves, followed
by the master.

2. When the units of a multiple unit combination are first turned on ther e is a b rie f de la y until all
units are communicating over the BITBUS to form the combined assembly.

• When the master is turned on, the unit initially displays the Serial number as well as the
Firmware Revision levels and power up test results for the Display, Interface and Analog
processors, then displays the Master Power Up screen (Figure 2-16).

• When a slave is turned on, the unit initially displays the Slave Power Up screen (Figure
2-18), the Fault indicator is lit, and the unit continues to beep once a minute until the
master is found. For instructions to return the slave to standalone operation, refer to
PAR. 2.8.7. Once the slave is up and running, the

! key indicates LOCKOUT and the

# key shows DISPLAY (see PAR. 3.2.5).

• When the master finally recognizes all the slaves, the master LCD reverts to the Power
On Default screen (see Figure 2-17). The slave(s) display the voltage meter (for series
configurations) or current meter (for parallel configurations), and the message indicates
the unit is operating as a slave with slave number shown at lower left corner. The fault
indicators on all units are off.

• Operation of a multiple unit combination is done by operating the master as described
for a single unit. SCPI commands and front panel control actions applied to the master
affect the multiple unit combination. The LCD display of the master refers to the multiple
unit combination, while the front panel LCD of the slave shows the actual volt age (series)
or current (parallel) provided by the slave.

2.8.7 RESTORING A UNIT TO STANDALONE OPERATION

1. Turn off power to the master.

2. Turn off power to the slave(s).

3. Turn on power to the unit to be restored to standalone operation.

4. From the power-up screen press
Parallel and press
enter ADMIN2 password (see PAR. 3.2.4.3) before continuing.

5. Press

6. Press

7. Turn off power to the unit, then turn power on. The unit will power up as a standalone unit.

2.8.8 CHANGING MULTIPLE UNIT CONFIGURATIONS

@ to return to factory defaults. This configures the unit as a standalone unit.
$ to save for power-up.

! to view the Multiple Units menu (see Table 2-12). When prompted,

% to enter the General Setup Menu. Highlight Series/

To change a unit from series, parallel, Master 2X2 or Master 3X2 operation to a different config­uration, first set the unit to Standalone by referring to PAR. 2.8.7, then refer to PAR. 2.8.4 and
configure as desired.

2-32 BOP HIPWR 091719

GND
NET

OUT
MON

N / C OUT

S

COMSCOM

MON

GND

GND
NET

OUT
MON

N / C OUT

S

COMSCOM

MON

GND

GND
NET

OUT
MON

N / C OUT

S

COMSCOM

MON

GND

GND
NET

OUT

MON

N / C OUT

S

COMSCOM

MON

GND

GND
NET

OUT
MON

N / C OUT

S

COMSCOM

MON

GND

GND
NET

OUT
MON

N / C OUT

S

COMSCOM

MON

GND

FIGURE 2-19. 3 X 2 (3 SERIES X 2 PARALLEL) CONFIGURATION, LOCAL SENSING, TYPICAL

BOP HIPWR 091719 2-33/(2-34 Blank)

3.1 GENERAL

This section explains how to operate the 1000 Watt BOP Power Supply. The power supply can
be operated either in Local mode (see PAR’s. 3.2 and 3.3) using the front panel keypad,
ADJUST control and graphical display, or in Remote mode.

NOTE: Unless otherwise noted, operating instructions start from the power-up screen (see

either Figure 3-4 or Figure 3- 5). Press
screen.

Remote mode can either be analog or digital. Analog remote uses analog signals from the Ana­log I/O port to control the output (see PAR. 3.4).

• MG Models. Digital remote (s ee PAR. 3.5) for MG models uses eith er the built- in GPIB
(IEEE 488) (see P AR. 3.5.4) or RS 232 (see PAR. 3.5.6) interface to communicate with a
remote computer. GPIB or RS 232 communication is via one of two protocols: 1) SCPI
commands which afford full functionality of the BOP (see PAR. 3.6, Appendix A and
Appendix B) or 2) CIIL commands (for compatibility with older Kepco products). MG
model operation in remote mode can be simplified by the use of the VISA driver (see
PAR. 3.5.5).

• ME Models. Digital remote for ME models uses either the built-in LAN (see PAR. 3.5.7)
or RS 232 (see PAR. 3.5.6) interface to communicate with a remote computer. RS 232
communication is via one of two protocols: 1) SCPI command s which afford full function­ality of the BOP (see PAR. 3.6, Appendix A and Appendix B) or 2) CIIL commands (for
compatibility with older Kepco products). LAN communication uses SCPI commands.

SECTION 3 - OPERATION

% to exit submenus and return to the power-up

3.2 POWER SUPPLY BASICS

The following paragraphs describe basic operation of the front panel controls, which are used to
configure and operate the power supply. This includes a description of the keypad (PAR. 3.2.1),
graphical display (LCD (PAR. ), how to turn the unit on (PAR. 3.2.3), how to change the power­up defaults (see PAR. 3.3.8). An explanation of the BOP menus (PAR. 3.2.4) provides basic
techniques needed to use the ADJUST control and the function, arrow and numeric keys in con­junction with the LCD to operate the pow er supp ly. Operator convenience functions (LCD back ­ground and contrast, and the audible beep) are described in PAR. 3.2.5. Refer to Table 3-1 and
Figure 3-1 for a description of front panel controls and indicators.

BOP HIPWR 091719 3-1

NUMBER

(FIGURE 3-1)

1

2

3

4

5

6

FIGURE 3-1. BOP SERIES FRONT PANEL

TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS

CONTROL/INDICATOR FUNCTION

POWER ON/OFF

circuit breaker A7CB1

Alphanumeric/graphic Display (

(Color LCD)

STANDBY indicator

Keypad

FAULT indicator

ADJUST control

Applies source power to unit

Displays output voltage and current as well as information in response to
keypad and ADJUST control entries. Displays function of soft function
keys F1 through F5, and displays information as required to perform all
local functions.

Lights to indicate when the unit is in Standby mode. Behavior of the unit
in Standby (Output off) is determined by the options chosen for Load
Type (see PAR. 3.3.7). If the Load Type is ACTIVE (default), then in
Standby mode the unit is set to voltage mode, voltage is set to zero, cur­rent protection is set to the nominal, and voltage limit is set to maximum.

Access all local functions (see PAR. 3.2.1, Figure 3-2 and Table 3-2 for
details).

Lights when a fault is detected. The failure of the following assemblies
cause the FAULT indicator to go on: A1 (any control function failure), A2
(overtemperature, instant internal overcurrent, output overvoltage/over­current, local +15V failure), A4 (input under/overvoltage, input overcur­rent, internal output under/overvoltage, internal output overcurrent,
overtemperature, fan failure, local –15V failure). When the FAULT indica­tor lights, the LCD will briefly display messages about the fault (see Table
B-6, Appendix B for details), however the FAULT indicator remains lit.
When the fault has been removed, normal operation is restored by
cycling power off, then on (preferred) or by briefly pressing the RESET
key on the front panel to initiate a shut down and power up sequence
(see RESET key, Table 3-2).

The control Increases or decreases the highlighted digit of numeric fields
(use

R or T to change the highlight). When depressed, the control

Increases or decreases the least significant digit of numeric fields. If the
output is enabled, voltage and current adjustments are immediately pres­ent at the output without pressing ENTER. For alphanumeric fields, the
control cycles through all alphanumeric and symbol characters. (use
to highlight the next character and press ENTER when complete). On
submenus the control highlights parameter of interest.

T

3-2 BOP HIPWR 091719

3.2.1 KEYPAD DESCRIPTION (SEE FIGURE 3-2)

E
N
T
E
R

The front panel keypad is comprised of 27 keys, eleven for 10 digits (0 - 9) plus decimal point,
five dedicated to software functions (

, Y, U) that work with the display to select a parameter/field and highlight a numerical digit,

T

! to %) indicated by the display, four direction keys R

and seven dedicated function keys (STANDBY, MODE, RESET, CLEAR, +/–, ENTER and
HELP) that are defined in Table 3-2.

FIGURE 3-2. FRONT PANEL KEYPAD

TABLE 3-2. SPECIAL KEY FUNCTIONS

KEY FUNCTION

The STANDBY key toggles the unit between output on (enabled, ST ANDBY indicator off) and output off (disabled,
STANDBY indicator on). When on, the output goes to the programmed settings. Behavior of the unit in Standby

STANDBY

MODE

R or T

(Output off) is determined by the options chosen for Load Type (see PAR. 3.3.7). The default Load Type is
ACTIVE, i.e., in STANDBY the unit is set to voltage mode, voltage is set to zero, current protection is set to the
nominal, and voltage limit is set to maximum.

Depressing this key shifts the operating mode from voltage to current and vice versa, and at the same time sets
the unit to STANDBY permitting the user to introduce new settings for the selected operating mode. The operating
mode is indicated at the upper right of the LCD. Setting the unit to STANDBY when the mode is changed only
occurs when using the MODE key.

From the power-up screen, these keys scroll the cursor from digit to digit within a field.

Y or U

CLEAR

+/–

ENTER

HELP

! through

%

RESET

switch

BOP HIPWR 091719 3-3

From the power-up screen, these keys scroll through the main or protection fields. Also used to scroll though and
select options on other menus.

Clears numeric value to 0 (zero). Clears alphanumeric characters for new entry.

Switches the sign between + and – when inputting numerical values. The sign change applies only to the main
channel: voltage in voltage mode, current in current mode.

CAUTION:Pressing +/– key while the power is applied to the load will reverse the polarity of voltage
applied to the load.

Activates highlighted parameters. When setting voltage/current values using the keypad, the values entered are
not programmed until ENTER is pressed.

Provides context-sensitive help to assist in using the keypad and display to program the unit. Press HELP repeat­edly for more help messages.

The “soft” function keys are software dependent, and will change depending on the operation being performed.
The key function is indicated by a box in the LCD which is aligned with the key (see PAR. ).

Switch is recessed and requires the use of a tool to prevent inadvertent activation. Pressing RESET briefly
causes the unit to shut down followed by execution of a power on sequence which results in the unit being set to
the power on defaults (see PAR. 3.3.8). To restore normal operation after a fault has been cleared it is recom­mended that the unit be powered off, then on again instead of using the RESET key.

CAUTION:Pressing RESET will cause voltage transients to appear at the output which may damage a
connected load.

3.2.2 LCD AND POWER-UP SCREEN DESCRIPTION

The LCD display is a 320 x 240 pixel color window that displays various menus depending on
the state of the power supply and operator input.

Upon turning the unit on, the start-up screen (Figure 3-3) is displayed briefly, showing the firm­ware versions of the BOP processors and the results of the start-up self test.

FIGURE 3-3. START-UP SCREEN

After the start-up-up screen, the power-up screen (Figure 3-4 or Figure 3-5) is displayed. The
LCD will show actual voltage and current at the BOP output, the mode (at the upper right), the
function of the soft keys to the right, help text at the bottom, and main and complementary limit
channel settings above the help text. The power-up screen is pres ented upon p ower-up or when
all submenus of a function have been exited. This screen shows analog and digital representa­tions of the actual BOP output in the center of the display.

At the upper right of the display, the mode of operation is displayed:

• Voltage source

• Voltage sink

• Current source

• Current sink

3-4 BOP HIPWR 091719

FIGURE 3-4. POWER-UP SCREEN SHOWING GRAPHIC METERS

VOLTAGE
SOURCE

0.0402

0.0000

ANALOG VOLTMETER

DIGITAL VOLTMETER

ANALOG AMMETER

DIGITAL AMMETER

HIGHLIGHT TO CHANGE

LOCAL/REMOTE

OPERATING
INFO

SOFTWARE

FUNCTION

KEYS

STATUS

ACTIVE SETTINGS

MESSAGES

LAN OK

VOLTAGE

0000

0.

NOTE:
WHEN SET TO BIPOLAR, ONLY ONE PROTECTION FIELD IS DISPLAYED.
WHEN SET TO INDEPENDENT, TWO PROTECTION FIELDS ARE DISPLAYED AS SHOWN HERE.
SEE PAR. 3.3.3.1 FOR DETAILS.

VOLTAGE
SINK

-9.3600

-10.000

ACTUAL OUTPUT

CURRENT WAVEFORM

ACTUAL OUTPUT
VOLTAGE WAVEFORM

VOLTAGE

0000

-10.0

The OPERATING INFO found in the upper right of the display consists of three lines. The
Selected mode of operation is shown on the top line. If the unit is providing power to the load
(SOURCE) or absorbing power from the load (SIN K), this is displaye d on the Midd le line. If the
the unit is at a protection limit, the third line is displayed.

BOP HIPWR 091719 3-5

When in Voltage mode, the power supply will (within the configured and rated limits) provide the
programmed output voltage. Mode displayed at the upper right is VOLTAGE. Current is deter­mined by the load, and cannot exceed the Cur rent Protect limits. If the protect limit is reached,
CPROTECT is displayed; if protect limit has not been reached this line is blank.

FIGURE 3-5. POWER-UP SCREEN SHOWING TIME LINE GRAPH

When in Current mode, the power supply will (within the configured and rated limits) provide the
programmed output current. Mode displayed at the upper right is CURRENT. Voltage is deter­mined by the load, and cannot exceed the Voltage Protect limits.

Either SOURCE or SINK is displayed below the mode of operation. When in Source mode, the
power supply is delivering (sourcing) energy to a passive load. When in Sink mode, the power
supply is operating as an electronic load, absorbing and recuperating the energy of an active
load. Recuperated energy is passed back into the a-c source power line. Mode displayed at the
upper right is SINK when the unit is in voltage mode and an extern al constant current is injected
into the BOP. Correspondingly, SINK is displayed when the unit is in current mode and an
injected current from an exte rnal constant vo ltage is presen ted at the output of the BOP. These
messages are normally displayed briefly when voltage is decr eased towards ze ro, and may also
be displayed briefly during changes in a capacitive load.

If CPROTECT (current protection), VPROTECT (voltage protection) or PROTECT (analog pro­tection, either voltage or current) is displayed, the power supply output is controlled by the pro­tect channel and will not exceed the preprogrammed protection limit.

The bottom lines of the display provide STATUS, ACTIVE SETTINGS and MESSAGES (includ­ing error messages).

STATUS includes whether the unit is under local or remote control, identifies the main and pro­tect channels and, if the LAN interface is installed, LAN OK is visible when the LAN indicator on
the LAN port is lit (see Figure 2-1 and Table 2-1). When the LAN indicator is blinking, LAN OK
blinks, and the foreground and background colors of the LCD display will alternate. The protect
channel will show either a single entry for both positive and negative VPROTECT or CPRO­TECT or separate entries for + and – VPROTECT or CPROTECT. This is established by select­ing either Bipolar or Independent for Protect Entry (see PAR. 3.3.3.1).

ACTIVE SETTINGS show the values that will be applied to the respective channel. The high­lighted settings are used to program the unit and can be changed using the keypad or ADJUST
control after highlighting. If these are changed using the keypad, the ENTER key must be
pressed to program the unit; if the ADJUST control is used, the changed setting immediately
programs the unit without pressing ENTER. If the main channel indicates CURR-EXT or VOLT­EXT, the setting establishes the full scale output corresponding to a 10V analog signal (see
PAR, 3.4.4.2). If the main or protect channel indicates EXTERNAL, the corresponding setting is
determined by an analog referenc e (se e PAR. 3.4.4.1.

MESSAGES change depending on the particular screen being displayed. Error messages are
displayed for both local and remote operation, and only appear briefly.

At the right of the display, five graphic boxes indicates the active function of the soft function
keys,

! through %. Depressing the corresponding key on the keypad activates the function

shown on the display. These functions are arranged in a menu format (see PAR. 3.2.4).

3.2.3 TURNING THE POWER SUPPLY ON

CAUTION: DO NOT repeatedly toggle the circuit breaker/switch as this may damage the

unit.

Set POWER ON/OFF circuit breaker/switch (1, Figure 3-1) on front panel to ON. If actuator does
not lock when released, wait a few seconds before trying again. The circuit breaker is “trip-free”
design; if overload exists, contacts cannot be held closed by actuator.

3-6 BOP HIPWR 091719

When the power supply is turned on, it performs a brief self-test that includes testing the three
processors (analog, interface and display), then displays the power-up screen (see Figure 3-4
or 3-5). If an error is detected, the FAULT indicator will light, information about the error will be
briefly displayed on the LCD.

If the unit powers up in REMOTE mode, press
mode.

NOTE: If the unit is a Slave of a multiple unit configuration, the unit will power up in REMOTE

and will display LOCAL LOCKOUT once the Master has taken control of the Slave. To
restore LOCAL control of a Slave, power down both master and slave, then turn on
only the slave and press

To select between the meter (Figure 3-4) and tim e line (Figure 3-5) displa ys refer to PAR. 3.3. T o
change the default power-up settings, refer to PAR. 3.3.8.

3.2.4 HOW TO ACCESS THE MENUS

From the power-up screen, pressing the Function key indicated on the LCD opens the associ­ated menu. The menu opened may list submenus that may be opened either directly by press­ing the associated Function keys, or by highlighting an item on the list and pressing the Modify
Settings function key. Menus and submenus will display a list of parameters, with one high­lighted. The function key assignments can vary, but generally offer the following choices:

•

! allows the highlighted parameter to be viewed or modified. After changing the

parameter, the following choices are available.

•

$ - APPLY to save the change

•

% - ABORT to abort the change and exit to the previous menu.

! (see PAR. 3.3.1) to set the unit to LOCAL

! (see PAR. 3.3.1) to set the unit to LOCAL mode.

•

@ - DEFAULT to restore the variable to factory defaults.

• Illegal keys, such as
short period of time.

•

@ - RESTORE DEFAULT restores factory defaults for the parameters displayed

(except for GPIB address). The factory defaults may be saved as power-up defaults by
pressing

•

# - The function varies, depending on the menu. In most cases # is used to abort a

change without applying the modified setting. From the power-up screen or the DIS­PLAY (Operator convenience) screen,
sions/TEST submenu of the General Setup Menu,

•

$ - SAVE FOR POWER-UP Saves the configuration shown as a power-up setting so

the changes will not be lost when the unit is turned off.

•

% - APPLY & EXIT applies the current (changed) setting without saving for power-up

and exits to the previous menu or to th e power- up scr een, EXIT leav es the cur rent menu
without saving or applying changes.

The menu structure is as follows (NOTE: BOLD = Factory Default):

$.

!, cause error messages to be displayed in the status line for a

# is used to adjust contrast. In the Revi-

# is used to execute a test.

BOP HIPWR 091719 3-7

Power-up Screen (Power up menu)

•

! - Save/Recall

• • Saved Setups (Figure 3-10): Recall one of 99 saved setups.

• • • Saved Setup Details (Table 3-9): Mode (voltage/current/External), main channel reference (inter-

•

• • Saved Waveforms (Figure 3-11): Choose one of 16 saved waveforms.

• • • New Waveform Settings (T able 3-13): Name (max. 10 characters), mode (voltage/current) No. of cycles,

• • • • First segment: type (Square/ +ramp /-ramp/triangle/sine/level), Frequency, PtoP Amplitude, Offset

• • • Edit Waveform (Figure 3-12): Name, no. of cycles, +protect, -protect, segment list, mode

• • • • Segment Details (Table 3-12): Type ((Square/+ramp/-ramp/triangle/sine/level/slope/trigger),

•

• • Display Settings (Table 3-3): Graphic Display (meters/graphics, background (black/white/mono-

•

• • Analog Remote Settings: Reference input (internal/external/external reference level), protect limit (Inter-

•

• • Interface Settings (Table 3-17):

• • • *RST set Output (on/off),

• • • GPIB Settings (Table 3-17): Language (SCPI/CIIL), GPIB address (default = 6), Device clear

• • • Serial Settings (Table 3-17): Baudrate (Off/9600/19200/38400), Xon/Xoff (disable/enable), prompt (dis-

• • • LAN Setting (Table 3-18): IP Address, IP MASK, AUTO IP ON, DHCP ON, Name and index (MDNS

• • Max/Min Settings (Table 3-5): for voltage mode: +Voltage max, –Voltage min, ±CProtect max/min; for cur-

• • Load Type (Figure 3-8): Active/Resistive/Battery, Remote On-off: (disabled/high is off/low is off/high is

• • Remote On/Off (Shutdown or Output On/Off) Operation (Table 2-3): LowPulse, HighIsOn, LowIsOn, HighI-

• • Revisions/Test: (Tests: display, keypad, LAN, interface, serial, analog and output)

• • Calibration (PAR. 4.4): Voltage, Current and External and Controls calibration. Shows Firmware versions

• • Power-up Settings (PAR. 3.3.8): Mode (Voltage/Current/External), Main channel Reference (Inter-

• • Password (See Figure 3-6 for default settings)

• • • Password Settings: Menu protection (Interface/Max-Min/Load/Test/Calibration/Power-up/Keypad @

• • • Series/Parallel (Table 2-12): Configuration (Standalone/Parallel/Series/Master 2X2/Master 3X2); for

nal/external/external reference level) and setting, Protection Type (internal/external/LesserLimit) and
setting(s), output status (on/off)

@ - Waveform

+Protect, -Protect)

frequency or period, amplitude, offset, start/stop angle for sine and triangle, Repeat (initial/repeat)

# - Display

black/blue/green/lt.green/ lt.blue), Protect Entry (independent/bipolar) Waveform Stop (outputOFF/User
Option), Key Press beep (On/Off/Error only)

$ - Analog Remote Setup (Table 3-16):

nal/External/LesserLimit), external mode (disable/enable)

% - General Setup

(SCPI/MATE)

abled/echo/enabled/enab+echo)

name)

rent mode: +Current max, –Current min, ±VProtect max/min

on/low is on/LowPulseOff)

sOff, LowIsOff, Disabled

for Display, Serial, GPIB, LAN and analog.

nal/External/ExtlRefLev), main setting, Protection: Type (Internal/External/LesserLimit), Voltage Limit (cur­rent mode), Current Level (voltage mode), output ON/OFF

local/Keypad@power-up), Save Display Change (Enable/Disable), Passwords (Unpro­tected/Main/Admin1/Admin2)

parallel or series: Unit Type (Standalone/Master+1 to+4/Slave #1 to #4) and Configuration: shows
Series or Parallel).

3.2.4.1 HOW TO MODIFY A PARAMETER

First access the parameter by accessing the proper menu as described above (PAR 3.2.4);
Tables 3-3 through 3-16 list the menu parameters. To modify a parameter listed in a menu or
submenu, proceed as follows:

1. Highlight the parameter using the

2. When the desired choice is highlighted, press

Y and U keys.

! to modify the active setting. The choices

are displayed with the active setting highlighted. In the case of numerals, the units digit is
highlighted.

3-8 BOP HIPWR 091719

• To change a numeric setting, press the number keys, then press ENTER to program the
numbers entered. Use the CLEAR key to clear numbers entered and start over.

• To change a main channel (voltage or current) or Protect value with the units digit high­lighted, press the number ke ys, (from most sign ificant to least significant digit) including
the decimal point when needed, th en pr e ss ENTER to apply the change or press the
or U key to abort the change.

•The ADJUST control can also be used to increment or decrement the highlighted digit.
Pressing ADJUST while rotating adjusts the le ast significan t digit. If the output is on (unit
not in Stan dby) while changing main chan nel or Protect values, ch anges made using the
ADJUST control are immediately applied to the output.

Y

• For alpha numeric ch aracters, first use the
acter, then use the
and symbols. Then use the
Use the CLEAR key to clear the entire alphanumeric field and start over. As an alterna­tive, use multiple presses of the keys for letters or symbols:
(ABC), 3 (DEF), 4 (GHI), 5 (JKL), 6 (MNO). 7 (PQRS), 8 (TUV), 9 (WXYZ), .
(., ;), (+, -). Use the T key to highlight the next ch ar acter.

3. Press

NOTE: Press HELP key for more information, press HELP again to see multiple screens;

3.2.4.2 PASSWORD SETUP.

Parameters that can be protected may be designated as Unp rotected ( no p asswor d require d) or
assigned one of three possible passwords: Main Unit, Admin 1 and Admin 2. The three pass­words can be used to independently protect certain settings to prevent tampering or inadvertent
reconfiguration of the BOP, yet allow access to qualified personnel. These password levels
apply only to local operation. When in remote, only the main password is accessible, acting
as a general password (see PAR B.173). The functions that can be password protected are
Interface settings, Max/Min settings, Load type, Test, Calibration, Power-up Settings, and Key­pad lockout at power-up (see Figure 3-6 for factory default password settings). In addition, it is
possible to prevent changes made to the display settings from being saved for power up by set­ting Save Display Chg to Disable.

$ to apply the change and return to the menu (to change another parameter, repeat

steps 1 and 2). To abort (return to the menu without applying the change), press

press CLEAR key to exit the help screen.

T and R keys to highlight the desired char-

U or Y keys or ADJUST control to scroll through numbers, letters

T and R keys to highlight the next character and repeat.

0 (0, space), 1 (1, /, \), 2

%.

When the unit is operating in remote mode with Keypad @ local activated, a password is
required before the unit can be returned to lo ca l op eration . In ad dition , wh en a wave fo rm is exe­cuting in local mode, depressing
waveform is stopped.

To change any password you must enter the Admin 2 password to access the Password Menu.
The unit is shipped with the Admin 2 password set to “KEPCO,” the Main Unit password set to
”DEFAULT,” and the Admin 1 password is not assigned. To change the password or to protect
one of the protected menus, proceed as follows:

1. Press

BOP HIPWR 091719 3-9

% from the power-up screen to enter the General Setup menu. Highlight Password

and press

!.

% to stop the waveform requires a password before the

2. Enter the Admin 2 password (see PAR. 3.2.4.3 for details), then press ! to verify. The
Password Protection menu (see Figure 3-6) is now displayed.

3. To change a p assword, hi ghlight the Main Un it, Admin 1 or Adm in 2 p assword an d press
to modify.

4. Press CLEAR to erase the previous password from memory.

5. Enter the new password (see PAR. 3.2.4.3) and press
are permitted for passwords.

NOTE: Do NOT use space characters for passwords

6. To protect or unprotect a menu highlight the password setting for the menu (Interface, Max­Min, Load, Test, Power-up, Keyboard @ Local, Keypad@power-up) and press
Highlight either the desired password (Main Unit, Admin 1 or Admin 2) or Unprotected and
press

$ to save.

NOTE: To restore the password protection defaults shown in Figure 3-6, press

the three individual passwords remain unchanged.

7. When complete, press
for power-up) and exit.

3.2.4.3 HOW TO ACCESS A PASSWORD PROTECTED MENU

An administrator can independently assign one of three passwords (Main Unit, Admin 1 or
Admin 2) to eight functions. Under General Setup the Series/Parallel submenu is assigned the
Admin 2 password; this cannot be changed.

$ to save for power-up or % to apply the changes (without saving

!

$ to save. Up to eight characters

! to modify .

@; this leaves

When trying to modify a protected setting or access a protected menu, the message PASS­WORD IS REQUIRED appears at the top, and the first character is highlighted. Proceed as fol­lows:

1. Enter the first character of the password using the keypad or ADJUST control (see PAR.

3.2.4.1 for entry of alphanumeric characters). (To change the password, refer to PAR.

3.2.4.2.)

2. Press

3. Repeat steps 1 and 2 until the correct password is displayed, then press

NOTE: If the password is incorrect, the message Password incorrect is displayed at the
bottom of the screen. Press CLEAR and proceed to step 1 above.

T to move to the next character and repeat step 1 for the next character of the pass-

word.

! to verify. The

protected setting or menu will now be accessible

3-10 BOP HIPWR 091719

FIGURE 3-6. PASSWORD PROTECTION MENU, FACTORY DEFAULTS

VOLTAGE

SOURCE

VOLTAGE

CURRENT

0.0000 0.0000

Admin 2

Admin 2

VOLTAGE

SOURCE

VOLTAGE

CURRENT

0.0000 0.0000

3.2.5 DISPLAY SETTINGS (OPERATOR CONVENIENCE) MENU

From the power-up screen (Figure 3-4), pressing

# opens the Display Settings Menu (see Fig-

ure 3-7 and Table 3-3). The functions listed can be modified using the techniques described in
PAR.3.2.4). This function is always available, whether in Local, Remote or Local/Lockout mode.

NOTE: If

$ is not available when the Display Settings menu is open, these functions (see

P AR. 3.2.5.1 to 3.3) can not be saved for power-up. T o sa ve for power -up it is firs t ne c­essary to change SAVE DISPLAY CHG at the password setup from DISABLE (default)
to ENABLE (see PAR. 3.2.4.2 and Figure 3-6). After saving the changes for power-up,
SAVE DISPLAY CHG at the password setup can be set to DISABLE to prevent future
changes if desired.

FIGURE 3-7. DISPLAY SETTINGS MENU

BOP HIPWR 091719 3-11

3.2.5.1 DISPLAYING METERS OR GRAPH (TIME LINE)

The top screen can be configured to either display graphical analog meters (Figure 3-4) show­ing a coarse representation of voltage and current in addition to the digital readout, or a graphi­cal time line (Figure 3-5). The graphical time line is not an oscilloscope type display. Instead, it
samples the output and refreshes the screen at a specified interval: 75, 30, 15, 7.5, 3.8, 1.5, 0.8,

0.3, or 0.15 Seconds. This can be useful when executing a waveform, although it is not a substi-

tute for monitoring the output with an oscilloscope for precision. There is no correlation between
voltage and current graphs. For the best graphical representation choose the graph time that is
closest to, but greater than, the waveform time duration.

From the power-up screen, press
Highlight either Meters or one of the graph selections and press
save for power-up or

3.2.5.2 ADJUSTING LCD CONTRAST AND BACKGROUND

To adjust the display contrast press
play Settings menu. Use number keys 0 (darkest) through 9 (lightest) to adjust contrast. Use the

% to exit.

#, then highlight the Graphic Display setting and press !.

# from the power-up screen (Figure 3-4) , to enter the Dis-

T and R keys for fine adjustment of contrast.

To change the background, press
press

!, highlight desired background color (see Table 3-3). Press $ to save or % to abort.

Then press

3.2.5.3 WAVEFORM STOP

Waveform Stop setup is described briefly in Table 3-3, and more fully in PAR 3.3.10.7.

3.2.5.4 ENABLING/DISABLING AUDIBLE BEEPS

From the power-up screen (Figure 3-4), press
using the techniques described in PAR. 3.2.4). Even though audible beeps are set to off, the
beeps will still sound upon power-up or detection of a power supply fault.

$ to save for power up or % to exit without saving for power up.

# from the power-up screen, Highlight Display Background,

#, then refer to Table 3-3 and modify the setting

$ to save. Then press $ to

3-12 BOP HIPWR 091719

TABLE 3-3. DISPLAY SETTINGS (OPERATOR CONVENIENCE) MENU

CHOICES

SETTING

NOTE: To save any of the functions listed below for power-up it is necessary to first change SAVE DISPLAY CHG at the password

setup (see PAR. 3.2.4.2and Figure 3-6) from DISABLE to ENABLE.

Graphic Display Meters

Display Background BLACK

Protect Entry Independent

Waveform Stop Output OFF

Key Press Beep On

CONTRAST --- Use number keys 0 through 9 for coarse adjust. Use

(BOLD = Factory

Default)

75s
30s
15s

7.5s

3.8s

1.5s

0.8s

0.5s

0.3s

0.15s

WHITE

MonoBlack

BLUE

GREEN

Lt.Green

Lt.Blue

Bipolar

User Option

# Stop Immediate

$ Stop & End Cycle

% Output OFF

Error Only

Off

FUNCTION

Meters - Output voltage and current are displayed on representations of analog

meters.
75s through 0.15s - Displays a graph showing a sample of the output for the
time indicated (see Figure 3-5). The complete time-line uses 240 points. E.g.,
selecting 2 Second Graph means that 2S/240 = 50ms sampling, i.e., every
50ms a snapshot of the output state is used to produce a single point.

BLACK - Sets the background to black and displays white characters plus color
for voltage and current and special messages and warnings.
WHITE - Sets the background to white and displays black characters plus color
for voltage, current, special messages and warnings.

MonoBlack - Sets background and characters to either white or black only.
BLUE - Sets the background to blue and displays black characters plus color

for voltage, current, special messages and warnings.
GREEN - Sets the background to green and displays red characters plus color
for voltage, current, special messages and warnings.
Lt.Green - Sets the background to light green and displays black characters
plus color for voltage, current, special messages and warnings.
Lt.Blue - Sets the background to light blue and displays black characters plus
color for voltage, current, special messages and warnings.

Independent - Allows + and – protection limits to be set independently. from
the front panel (see PAR. 3.3.3.1 for considerations when using remote mode).
Bipolar - Causes a single protection limit value (one for voltage, one for cur­rent) to apply to both ± limits. Only one value is displayed and edited from the
front panel. (see PAR. 3.3.3.1.)

Output OFF - When waveform is stopped (either count complete or
pressed), output freezes at whatever level the waveform was at when
pressed or count completed, then after a brief delay output is set to STANDBY
(disabled).
User Option - Allows three choices during waveform execution

1. Press
pressed), output freezes at whatever level the waveform was at when
pressed.

2. Press
(either count complete or
output stops at the last generated value of the waveform (e.g., for a sinewave
segment of 0° to 270°, 10V amplitude, 0V offset, when
put will end up at -10V).

3. Press
above,

On - provides an audible beep for each key press and for each error received.
Error Only - silences the beeps for each key press; errors will still cause beep.
Off - silences all beeps including key presses and errors except for power-up

and unit faults.

# to select Stop Immediate - When waveform is stopped (%

$ to select Stop and End Cycle - When waveform is stopped

% pressed), waveform runs through full cycle. The

% is pressed the out-

% to select Output OFF. This is the same as Output OFF described

%

% was

% was

T and R for fine

adjust. Then press (

% to exit or $ to save for power up (see PAR. 3.2.5.1).

BOP HIPWR 091719 3-13

3.3 LOCAL MODE OPERATION

Local operation of the BOP power supply can be accomplished from the front panel via the 27
key keypad, and the ADJUST knob. All indications are provided by the 4.7-inch color graphical
display (LCD).

3.3.1 SETTING LOCAL MODE

When the power supply is turned on, it is automatically set to Local mode. After the unit is on, if
the display shows F1-LOCAL, the unit has received a remote command and
pressed to unlock the keypad. However if the display shows F1-LOCK upon power up, the key­pad has been locked by KEYPAD @ power up from the Power Up Settings menu (see Table 3-

7). Pressing any key allows the user to enter a password before pressing

correct, the keypad will be unlocked until the next remote command is issued. If the display
shows F1-LOCK REMOTE after initial power up, the keypad has been locked by the
SYST:KEYB DIS command and can only be unlocked by the SYST:KEYB ENAB command.

3.3.1.1 KEYPAD LOCKOUT

To prevent the unit from entering local mode from the front panel once remote mode has been
entered, refer to PAR. 3.2.4.2 and assign a password to “Keyboard @ local.“ Then the unit
will not permit local operation until the proper password has been entered (see PAR. 3.2.4.3).
NOTE: The

If the
mand, SYST:KEYB DIS (see PAR. B.162). To unlock the keypad, either send SYST:KEYB
ENAB or turn the unit off then on again.

# key can still be used to adjust display contrast before entering the password.

! key legend is F1-LOCK REMOTE, the keypad has been locked by the remote com-

! must be

!; if the password is

3.3.1.2 LOCAL PASSWORD PROTECTION AT POWER-UP

It is possible to require a password before the front panel controls can function when the unit is
powered up. From the power-up screen, press
password (see PAR. 3.2.4.3) and press
@ Pwr-up and press F1. Highlight one of three password settings and press
press

$ to save for power-up (or % to exit without applying the changes). When the unit is

next powered up, pressing any keypad key or rotating the ADJUST control requires entry of the
password selected above before cont inuing. N OTE: The
play contrast before entering the password.

3.3.2 SETTING VOLTAGE OR CURRENT MODE

The BOP uses two separate channels, one to set output voltage or current and one to set the
corresponding protection limit. The main channel is determined by the MODE key (in local
mode) which alternately selects either Voltage mode or Current mode or by SCPI command (in
digital remote mode). The protection channel is determined automatically by the main channel
selected. When Voltage mode is selected, the current protection channel is active, and when
Current mode is selected, the V o lt age pro tection channe l is active. Table 3-4 defines the voltage
and current parameters used in this manual.

%, highlight password, then !. Enter Admin 2

! to verify. Under Menu Protection, highlight Keypad

$ to save. Then

# key can still be used to adjust dis-

3-14 BOP HIPWR 091719

3.3.3 PROGRAMMING V OLTAGE OR CURRENT AND ASSOCIATED PROTECT LIMITS

From the power-up screen the settable voltage/current parameters are displayed at the bottom
of the LCD above the HELP message (see Figure 3-4). Use
protect channel. (For BOP protect limits refer to PAR. 3.3.4.2 and for external limits see PAR.

3.3.4.3.)

Y or U to highlight the main or

1. To verify that the unit is configured for internal references press
screen and verify that Reference Input and Protection Limit are set to Internal, and External
Mode is set to Disable. If necessary to change a setting, use
parameter, and press
then press
PAR. 3.4.

2. Verify that the load has been configured properly to ensure that the unit behaves as
expected when the output is off (see PAR. 3.3.7 for details).

3. Press MODE key to select the main channel (VOLTAGE or CURRENT); the associated
PROTECT channel is automatically selected and displayed.

4. Set the output on or off as desired using the STANDBY key. The output is off (disabled)
when the STANDBY indicator is lit, on (enabled) when not lit.

5. Use
local mode (these methods can be used either when the output is disabled (STANDBY indi­cator lit) or enabled):

CAUTION: When the ADJUST control is rotated, the active parameter is immediately

a. Use the ADJUST control to increase or decrease the main channel setting (e.g., volt-

$ to save for power-up or % to exit. If analog programming is desired, refer to

Y or U to highlight the main channel. There are two ways to program the output in

effective if the output is enabled (on = STANDBY indicator not lit). The volt­age/current applied to the load changes as the ADJUST control is rotated.

age when the unit is in voltage mode). Start with the most significant digit of the desired
value, then use
control in while rotating the knob to modify the least significant digit.

! to modify. Highlight the desired selection and press $ to save,

T to highlight the next digit. For fine adjustment press the ADJUST

$ from the power-up

Y or U to highlight the

b. Enter the desired value on the keyp ad using the number keys. For exam ple, to prog ram

the BOP to 75.8V, press the following keys in order
fine adjustment use
before activation press the CLEAR key to set the value to zer o and st art over. When the
desired value is displayed, press ENTER. This causes the new value to appear at the
output and be applied to the load if the output is enabled.

NOTE: The value entered for the main channel and the protect channel is automatically pre-

vented from exceeding the preset maximum software limit (see PAR. 3.3.4).

6. To program the co rrespondin g Protec t channe l, press
Protect channel. Then set the value using either of the two methods described above. If the
Protect Entry setting (see PAR. 3.3.3.1) is set to Independent, separate entries for the posi­tive and negative protect channel are possible. Otherwise the value entered is applied to
both positive and negative protect cha nn e ls.

BOP HIPWR 091719 3-15

Y, and U to modify the least significant digit. To correct the entry

75.8 then press ENTER. For

Y or U as necessary to highlight the

TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS

Term Definition

To modify

refer to PAR.

Local Remote

+E

Onom

–E

Onom

+I

Onom

–I

Onom

+Voltage
–Voltage

+Voltage max
–Voltage min

+Current Protect
–Current Protect

+Current Protect Max
–Current Protect Min

Minimum (box)
+Current Protect Min
–Current Protect Max

+Voltage Protect
–Voltage Protect

The nominal (rated) output voltage of the unit determined by model; e.g. for
a BOP 36-28MG, ±E

Onom

is 36V.

The nominal (rated) output current of the unit determined by model; e.g. for
a BOP 36-28MG, ±I

Onom

is 28A.

Voltage mode only. Positive (+) and negative (–) output voltage values
established by keypad or remote command.
Range (+): 0 to +Voltage max
Range (–): 0 to –Voltage min

Volt age mode only . Maximum (positive) and minimum (maximum negative)
voltage that can be set.
Value (+): 0 to +E
Value (–): 0 to –E

Onom
Onom

Volt age mode only. Defines maximum (+) current and Minimum (maximum
negative) (–) that unit can source or sink.
Range (+): +Current Protect min to +Current Protect max
Range (–): –Current Protect max to –Current Protect min

Voltage mode only. Maximum setting for +Current Protect and Minimum
(maximum negative) setting for –Current Protect.
Value (+): +Current Protect min to (1.01 x +Current max)
Value (–): –Current Protect max to (1.01 x –Current min)

Voltage mode only. Minimum (positive) setting for +Current Protect and
maximum (maximum negative) setting for –Current Protect. Values of ±Cur­rent Protect between +Current Protect Min and –Current Protect Max (near
zero) are not allowed. This zone (also referred to as the minimum (box) is
a model-dependent constant, approximate 0.2% of I

(see Figure 1-3).

Onom

Current mode only. Maximum positive (+) and minimum (maximum
negative) (–) voltage that can appear at the output.
Range (+): +Voltage Protect min to +Voltage Protect max
Range (–): –Voltage Protect max to –Voltage Protect min

N/A N/A

N/A N/A

B.103

3.3.4.1 B.105,
B.106,
B.107,

B.109

B.37, B.38,

B.43, B.41

3.3.4.2 B.45, B.46,

B.47, B.48

N/A N/A

B.113,
B.115,
B.119,

B.117

+Voltage Protect Max
–Voltage Protect Min

Minimum (box)
+Voltage Protect Min
–Voltage Protect Max

Current mode only. Maximum (positive) setting for +Voltage Protect and
Minimum (maximum negative) setting for –Voltage Protect.
Value (+): +Voltage Protect min to (1.01 x +Voltage max)
Value (–): –Voltage Protect max to (1.01 x –Voltage min)

Current mode only. Minimum (positive) setting for +Voltage Protect and
maximum (maximum negative) setting for –Voltage Protect. Values of ±Volt­age Protect between +Voltage Protect Min and –Voltage Protect Max (near

3.3.4.2 B.121,
B.122,
B.125,

B.123

N/A N/A

zero) are not allowed. This zone (also referred to as the minimum (box) is

+Current
–Current

is a model-dependent constant, approximate 0.2% of E

3).
Current mode only. Positive and negative output current established by

keypad or remote command.

(see Figure 1-

Onom

B.27

Range (+): 0 to +Current max
Range (–): 0 to –Current min

+Current max
–Current min

Current mode only. Maximum (positive) and minimum (maximum
negative) current that can be set.
Value (+): 0 to +I
Value (–): 0 to –I

Onom
Onom

3.3.4.1 B.29, B.30,

B.36, B.36

3-16 BOP HIPWR 091719

3.3.3.1 SELECTING BIPOLAR/INDEPENDENT PROTECTION LIMITS

VOLTAGE

SOURCE

VOLTAGE

CURRENT

0.0000 0.0000

The BOP can be configured to allow the protection limits to be displayed and changed from the
front panel as either a single value that applies to both protection channels or as individual set­tings for positive and negative protection limits. Selecting Independent protection limits means
that the positive and negative limits are displayed (and can be modified) independently. Bipolar
means that for each protection limit (voltage or current) a single value applies to both the posi­tive and negative limits; only one value is displayed and can be edited for both ± prot ectio n lim­its.

If the MAX/MIN Protect Settings are not symmetrical when Protect Entry is set to Bipolar, the
protect setting can be adjusted from 0 to the higher protection limit from the front panel; the unit
automatically limits the lower protection limit to the MAX/MIN settings value.

For example, if the unit is in Current mode with +V Protect Max set to 10, -V Protect Max set to
5 and Protect Entry set to Bipolar, setting VPROTECT to 4 from the front panel sets both the
positive and negative protection levels to 4. Adjusting VPROTECT to 6 sets the positive protec­tion level to 6 but the negative protec tion level is automatically limited to 5 by -V Protect Max
with no errors or warnings generated.

Press

# from the power-up screen to enter the Display Settings menu (Figure 3-7), then high-

light Protect Entry and press
save, or
apply the changes (without saving for power-up) and exit.

% to abort. When complete, p ress $ to save for power-up, # to abort, or % to

! to change it. Highlight Bipolar or Independent, then $ to

BOP HIPWR 091719 3-17

FIGURE 3-8. GENERAL SETUP MENU

Selection of Bipolar does not immediately change the protect limit values; it changes how the
protect settings are displayed and set from the power-up screen. So if maximum/minimum pro-
tection limits were set to different values, (e.g, for BOP 36-28MG, current mode, no load, +V
Protect Max = 25V and –V Protect Min = 7V) when Bipolar is selec ted, the previous protection
values (+25, –7) will remain in place until a new value is entered in the Voltage Protection field.
When a new Voltage Protect setting, e.g., 22V, is entered wit h Bipolar mode selec ted, +Voltage
Protect is set to +22V and -V oltage Protect is set to –22V.

NOTE: The use of remote programming (via LAN or GPIB) automatically asserts Independent

protection limits. Once the unit is returned to local mode, the unit is automatically
returned to Bipolar mode.

3.3.3.2 UNDERSTANDING VOLTAGE AND CURRENT PROTECT LIMITS

These values are the references for the complementary channels: voltage in current mode and
current in voltage mode. The range for these values is between a minimum (box) value (see Fig­ure 1-3) and 1% above the rated nominal value (see PAR. 3.3.4.2). If the unit is in voltage mode,
it will enter current protect mode when the load demands more current and energy than permit­ted by the ±current protect settings. Similarly, if the unit is in current mode, it will enter voltage
protect mode if the load demands more voltage and energy than permitted by the ±voltage pro­tect settings. When the protect settings are exceeded, the protection ch annel lim it s the ou tput, a
VPROTECT, CPROTECT or PROTECT message is displayed at the upper right of the LCD,
and the power supply continues operation (PROTECT may be seen only when external limits
are in use). When VPROTECT is displaye d, bit 12 of the questionable status register is set.
When CPROTECT is displayed, bit 13 of the of the questionable status register is set. When
PROTECT is displayed, both bits 12 and 13 of the questionable status register are set. (see
para 3.6.7.3).

3.3.3.3 HIDDEN VOLTAGE AND CURRENT PROTECT LIMITS

The BOP employs two back-up channels which function as safety backups if a main channel
fails. The backup channel limits are fixed and not user accessible. These limits are set to 5%
over the nominal (rated) values for voltage or current. If the software limits for a main channel is
changed (PAR. 3.3.4.1), the corresponding protect channel limit is automatically changed to be
5% of the nominal (rated) value above the user-programmed software limit.

3.3.4 CHANGING MAXIMUM OR MINIMUM SOFTWARE-CONTROLLED LIMITS

The maximum or minimum allowable voltage and current settings of the unit can be reduced
from the nominal using the Max/Min Settings menu (Table 3-5). which lists the system’s soft­ware-controlled voltage and current limit s (+Voltage Max, –Voltage Min, +Current Max, –Current
Min) as well as the corresponding protection limits organized by operating mode. The default
values of the system limits are established by the Model: the nominal (rated) values for voltage
and current and 1.01 x the nominal (rated) values for protection. The default values can be
reduced by modifying the highlighted parameter. The unit will not accept local or remote com­mands that exceed the system limits. The system limits are always in effect, even when the unit
is controlled by an external reference. If system limits are changed, the protection limits
must be changed to correspond to the new system limits. As an example, changing +Volt­age Max and –Voltage Min of a BOP 36-28MG to ±3V, respectively, causes the unit to behave
as if it was a BOP 3-28MG . In this case it is important to change the +V Protect Max and –V Pro­tect Min limits (e.g., to ±3.3V, respectively) so that the load is protected when operating in Cur­rent Mode. System limits are absolute values (do not use minus sign for negative limits).

3-18 BOP HIPWR 091719

The internal parameters +Current Protect Min and –Current Protect Max are displayed to com­pletely define the permissible window when operating in Voltage mode. Similarly, +Voltage Pro­tect Min, and –Voltage Protect Max are displayed to completely define the permissible window
for voltage when operating in Current mode.

TABLE 3-5. MAX/MIN SETTINGS MENU

SETTING

+Voltage Max (value)

–Voltage Min (value)

+C Protect Max (value) model specific

+C Protect Min (internal value)

–C Protect Min (value) model specific

–C Protect Max (internal value)

+Current Max (value)

–Current Min (value)

+V Protect Max (value)

+V Protect Min (internal value)

–V Protect Min (value)

–V Protect Max (internal value)

NOTE: To restore all Max/Min settings defaults, press

press
saving for power-up) and exit.

up to Iomax + 1% of Iomax

up to Iomax + 1% of Iomax

@ to restore defaults shown above in BOLD. Press $ to save for power-up or % to apply the changes (without

CHOICES

(BOLD = Factory Default)

+Eomax

–Eomax

Not Adjustable

Not Adjustable

+Iomax

–Iomax

Eomax +1% of Eomax

Not Adjustable

Eomax + 1% of Eomax

Not Adjustable

Defines the maximum voltage level that can be set in voltage mode. Default =
Rated +Output voltage (e.g., for BOP 36-28MG, Eomax = 36). To modify, see
PAR. 3.3.4.1.

Defines the minimum (maximum negative) voltage level that can be set in volt­age mode. Default = Rated –Output voltage (e.g., for BOP 36-28MG, Eomax =

36). To modify, see PAR. 3.3.4.1.
Defines the maximum value for +Current Protect. To modify refer to 3.3.4.1.

Defines the minimum value that +Current Protect can be set to. This is a model­dependent constant, approximately 0.2% of I
front panel.

Defines the minimum (maximum negative) value for –Current Protect. To modify
refer to 3.3.4.1.

Defines the maximum (minimum negative) value that –Current Protect can be
set to. This is a model-dependent constant, approximately 0.2% of I
not adjustable from the front panel.

Defines the maximum current level that can be set in current mode. Default =
Rated +Output current (e.g., for BOP 36-28MG, Iomax = 28). To modify, see
PAR. 3.3.4.1.

Defines the minimum (maximum negative) current level that can be set in current
mode. Default = Rated –Output current (e.g., for BOP 36-28MG , Iomax = 28). To
modify, see PAR. 3.3.4.1.

Defines the maximum value that +Voltage Protect can be set to. To modify refer
to 3.3.4.1.

Defines the minimum value that +Voltage Protect can be set to. This is a model­dependent constant, approximately 0.2% of E

the front panel.
Defines the minimum (maximum negative) value for –Voltage Protect. To modify

refer to 3.3.4.1.
Defines the maximum (minimum negative) value that –Voltage Protect can be

set to. This is a model-dependent constant, approximately 0.2% of I
not adjustable from the front panel.

FUNCTION

VOLTAGE MODE

and is not adjustable from the

Onom

and is

Onom

CURRENT MODE

and is not adjustable from

Onom

and is

Onom

% from the power-up screen, highlight Max/Min settings, press !, then

BOP HIPWR 091719 3-19

3.3.4.1 CHANGING MAXIMUM ACCEPTED VOLTAGE OR CURRENT (MAIN CHANNEL SOFT­WARE LIMITS)

The software limits for the main channels (+Voltage Max, –Voltage Min, +Current Max and
–Current Min) are the maximum (positive) and minimum (Maximum negative) values allow­able for voltage an d current. The default software limits are determined by the model: the nom­inal (rated) values for voltage and current (e.g., 3 6V and 28A for the BOP 36-28MG) . These four
values can be adjusted independently. For example, a BOP 36-28MG, capable of delivering
±36V in voltage mode can be configured to allow voltage to be adjusted only from –1V to
+15V by setting –Voltage Min to –1 and +Voltage Max to +15. Similarly, a BOP 36-28MG,
capable of delivering ±28A in current mode can be configured to allow current to be ad justed
from –0.5A to +10A by setting –Current Min to –0.5 and +Voltage Max to +10. Adjustment
range is between 0 and E
ware limits are not the same as the Protect Limits described in PAR. 3.3.4.2.

The main channel software limit values can be lowered (closer to zero) by the user, e.g., to pre­vent inadvertent damage to a specific circuit under test. When the maximum/minimum values
are lowered, the unit will not accept values that exceed the new software limits. If the user
attempts to enter a value that exceeds the software limit, the unit will continue to function. in
local mode the Exceeding Maximum Allowed Value message is displayed, and the output
will be clamped to the main channel software limit (maximum/minimum) value. In remote mode
the command is considered invalid and is disregarded: a 120 error is produced and the mes­sage Voltage Out of Range or Current Out of Range is displayed on the front panel.

The main channel software limits are always in effect, even when the unit is controlled by an
external reference. If main channel software limits are changed from the default, the pro-

tection limits must be changed to correspond to the new software limits (see PAR.

3.3.4.2). As an example, changing +Voltage Max and –Voltage Min of a BOP 36-28MG to ±3V,

respectively, causes the unit to behave as if it was a BOP 3-28MG. In this case it is important to
change the +V Protect Max and –V Protect Min limits (e.g., to ±3.3V, respectively) so that the
load is protected when operating in Current Mode.

for voltage and 0 and I

Onom

for current . Note that these soft-

Onom

1. Press

Max/Min Settings.

2. Press

is required, see PAR. 3.2.4.3 for instructions.)

3. Highlight the voltage or current max/min value and press

are absolute values (do not use minus sign for negative limits). Use number keys to change
the setting, then

4. When complete, press

(without saving for power-up) and exit.

5. Upon return to the power-up screen, the main channel (voltage or current) is compared

against the main channel limits in effect. If the main channel exceeds the limit, it is set to
zero.

% from the power-up screen to enter the General Setup menu, then highlight

! to enter the Max/Min Settings submenu (Fig ure 3 -9 and Table 3-5). (If a Password

! to change it. Software limits

$ to save.

$ to save for power-up, # to abort, or % to apply the c hanges

3-20 BOP HIPWR 091719

FIGURE 3-9. MAX/MIN SETTINGS MENU

VOLTAGE

SOURCE

VOLTAGE

CURRENT

0.0000 0.0000

VOLTAGE MODE
+Voltage Max.:

-Voltage Min.:
+C Protect Max.:
+C Protect Min.:

-C Protect Min.:

-C Protect Max.:

CURRENT MODE
+Current Max.:

-Current Min.:
+V Protect Max.:
+V Protect Min.:

-V Protect Min.:

-V Protect Max.:

10.0

10.0

75.8

0.02126

0.02128

75.8

75.0

75.0

10.1

0.15584

0.15600

10.1

3.3.4.2 CHANGING MAXIMUM/MINIMUM PROTECTION SOFTWARE-CONTROLLED LIMITS

The ± protection limits are software limits that establish the maximum and minimum (maximum
negative) allowable levels of output voltage in current mode and current in voltage mode. The
default protection limits are 1% above E

Omax or

1% above I

Omax

.

The protect channel limits are +V (voltage) Protect max, –V Protect min, +C (current) Protect
Max and –C Protect min (see Table 3-4); these prevent the unit from delivering voltage or cur­rent that exceed these settings. In voltage mode the current protect channel is clamped to the
limit value; in current mode the voltage protect ch ann el is clamped to th e limit value. Adjustment
range is between a minimum (box) value (see Figure 1-3) and 1% above the nominal (rated)
value.

CAUTION: When working with active loads, always adjust the BOP protection limits to

be above the maximum values of voltage or current expected from the load.
For example, when the BOP is operating in voltage mode sinking energy
from a constant current type load, set the current protection limits of the
BOP above the maximum current expected from the load.

1. Press

% from the power-up screen to enter the General Setup menu (Figure 3-8), then

highlight Max/Min Settings and press

! to view. (If a Password is required, see PAR.

3.2.4.3 for instructions.)

2. Highlight the ±C Protect or ±V Protect Max or Min value and press
ware limits are absolute values (do not use minus sign for negative limits). Use numb er keys
to change the setting. Press

3. When complete, press
(without saving for power-up) and exit.

4. Upon return to the power-up screen, the ne w protection limit (voltage or current) is com­pared against the protection limits in effect. If the new protection limit setting is below the
existing setting for the protection limit, the protection channel (voltage or current) is set to
zero.

BOP HIPWR 091719 3-21

$ to save for power-up, or # to ab or t, or % to apply the ch ang es

$ to save, or % to abort.

! to change it. Soft-

3.3.4.3 EXTERNAL LIMITS

These limits are external analog signals which are converted within the BOP to digital signals
that program the protection channels only: current protect in voltage mode and voltage protect
in current mode. The range of each analog input signal is +1V to +10V, corresponding to a
range for clamping the output between minimum, 10% of nominal (positive and negative), to
+max/–min of nominal rating. Refer to PAR. 3.4.5 for details on implementing external limits.

Table 3-4 explains the effect that these limits have in both voltage and current mode, and refer­ences the corresponding paragraph for changing th e parameter in either local or remote mode.

3.3.5 ENABLING/DISABLING DC OUTPUT POWER

The BOP output can be disabled (OFF) or enabled (ON) by toggling the STANDBY key in local
mode or sending the SCPI OUTPut ON or OUTPut OFF command (see PAR. B.21) via the
selected digital remote control bus (see PAR. 3.5). The behavior of the unit when disabled
depends on the Load Type setting (see PAR. 3.3.7 and Table 3-6 for details).

3.3.6 USING THE TRI GGER PORT TO CUSTOMIZE OUTPUT ON/OFF OPERATION

The Trigger Port, pin 2 (see Table 2-3) can be used to set the output on or off via a single remote
signal. The Trigger port can be configured either locally, using the front panel, or remotely, using
the OUTP CONT command. (see PAR. B.23).

From the front panel press
ure 3-8), then highlight Load Type and press

3.2.4.3 for instructions.) Press down or up arrow key to highlight the Remote On -Off option, then
press

! to open the Output Configuration screen and show choices. Highlight Disabled, High

Is Off, Low Is Off, High Is On, Low Is On, or LowPulseOff (see Table 2-3 for details), and press

% from the power-up screen to ente r th e Gen eral Se tu p m enu (Fig-

! to modify. (If a Password is required, see PAR.

$ to save or # to abort. Then press $ to save for power-up, or # to apply the changes

(without saving for power-up) and exit. To restore factory default (LowPulseOff), press
the Output Configuration screen, then press

3.3.7 DETERMINING HOW THE UNIT RESPONDS WHEN OUTPUT IS OFF (LOAD TYPE)

The BOP supports three Load Type selections (see Table 3-6) which determine how the power
supply responds when the output is off: ACTIVE, RESISTIVE and BATTERY. (Load type CUS­TOM (not normally active) permits customized settings to be implemented; for details contact
consult factory.) These selections are designed to provide proper operation with different load
types. It is important to note that the Load Ty pe selection does not affect the settings of the
power supply for ON state; it only af fects the main internal reference level and the protection lev­els during the OFF state.

$ to save for power-up or % to exit.

@ from

3-22 BOP HIPWR 091719

TABLE 3-6. POWER SUPPLY BEHAVIOR WHEN OUTPUT IS SET TO OFF

WARNING

WARNING

LOAD TYPE

SETTING

ACTIVE

RESISTIVE

BATTERY

If unit was in Voltage Mode when output OFF

command issued.

• Unit remains in voltage mode.

• Voltage set to zero.

• Both ± Current Protect set to maximum.

• Both ± Voltage Limit remain at maximum.

• Unit remains in voltage mode.

• Voltage set to zero.

• Both ± Current Protect set to minimum box values.

• Both ± Voltage Limit. remain at maximum.

• Unit set to current mode.

• Current set to zero.

• Both ± Voltage Protect. remain at maximum.

• Both ± Current Limit set to maximum.

If unit was in Current Mode when output OFF

command issued.

• Unit set to voltage mode.

• Voltage set to zero.

• Both ± Current Protect remain at maximum.

• Both ± Voltage Limit set to maximum.

• Unit remains in current mode.

• Current set to zero.

• Both ± Voltage Protect set to minimum box values.

• Both ± Current Limit remain at maximum.

• Unit remains in current mode,

• Current set to zero.

• Both ± Voltage Protect set to maximum.

• Both ± Current Limit remain at maximum.

For inductive loads, and especially superconducting magnet type
loads, the inherent offset of the BOP in the OFF state may generate sig­nificant current in the circuit. Two properly rated external switches
must be installed for safety: one in series between the power supply
and the magnet, and the other in parallel with the magnet. Once the
BOP front panel display reads 0V, 0A, close the parallel switch, then
open the series switch before removing or installing connections
between BOP and load. To restore normal operation, first close the
series switch, then open the parallel switch.

ACTIVE. Active mode (default setting) is necessar y for the power supply to function properly

and safely with inductive loads and constant-current-type active electronic loads. Active mode
can also be used with resistive loads. Table 3-6 indicates how the power supply re sponds to a
command to go from Output ON to OFF. When the output is disabled, the unit is set to voltage
mode, voltage is set to zero and both current protect and voltage limit are set to maximum.
When the unit is enabled, the pre-existing settings for voltage, current protect and voltage limit
are restored.

For both inductive loads and constant-current-type active electronic
loads when the BOP output is set to OFF, a path is provided for absorb­ing either the energy accumulated in the reactance of the load during
the ON state, or energy delivered by an electronic load. This prevents
damage to the load and power supply as well as providing safety for
the user. However, In addition to the built-in safety features, constant­current-type active electronic loads must be adjusted to zero and the
BOP front panel LCD must read 0V, minimum current, before handling
the power supply-to-load connections.

BOP HIPWR 091719 3-23

RESISTIVE. This mode, as the name suggests, is useful for resistive loads. Table 3-6 indicates

WARNING

how the power supply responds to a command to go from Output ON to OFF.

Accessing the BOP after the output is disabled in BATTERY mode is
hazardous because (1) high current ar cing is p oss ible and (2 ) e it her th e
external battery voltage, or the voltage (±Voltage Protection max) on the
BOP output terminals may be dangerous. Therefore, for battery and
constant-voltage-type active electronic loads it is recommended that
two properly rated external switches be installed for safety: one in
series with the battery, and one across the BOP output. After the unit is
set to OFF, first open the switch in series with the battery, then close
the switch across the BOP output to ensure safety before handling
BOP connections. When connecting the battery, the switch across the
output should be opened after the connections are complete and then
the switch in series with the battery should be closed. If the constant­voltage-type active electronic load is adjust ed to zero before handling
the power supply-to-load connections, only the switch across the BOP
output is required.

BATTERY. This mode is necessary for the power supply to function properly and safely with

either battery or constant-voltage-type active electronic loads. This mode prevents the battery
from discharging during the OFF state. When the output is disabled (set to OFF), the BOP will
go to current mode, current will be set to the calibrated zero value, with voltage protect and cur­rent limit set to maximum. In this way the battery will not be discharged while the output is OFF.
However, even if properly calibrated, the zero current has a tolerance of ±0.01% of nominal
rated current. Therefore the battery will be very slowly charged or discharged by this non-zero
current value, depending on its polarity. For constant-voltage-type active electronic loads this
mode stops energy flow during the OFF state. Table 3-6 indicates how the power supply
responds to a command to go from Output ON to OFF.

CAUTION: When working with battery mode, if the output is set to ON by *RST (see

PAR. 3.5.3.3) and the battery is charged above 0.01V, the unit will sink 105%
of I

max.

O

To configure, press
modify. (If a Password is required, see PAR. 3.2.4.3 for instruction s.) press
Highlight Active, Resistive or Battery (see explanations and associated WARNINGS above) and
press

$ to save or # to abort. Then press $ to save for power-up, # to abort, or % to

apply the changes (without saving for power-up) and exit. After configuring, the new setting will
be effective when the power supply goes from output on to output off.

To restore factory default (Active), press
press

!, then press @ to restore default. Press $ to save for power-up or % to exit.

3-24 BOP HIPWR 091719

% from the power-up screen, then highlight Load Type and press ! to

! to show choices.

% from the power-up screen, highlight Load Type,