AMETEK SLM-4 User Manual

Smart choice for power

Xantrex Technology Inc. Programmable Products

9250 Brown Deer Road San Diego, CA 92121 USA

858 450 0085 Phone 858 458 0257 Fax www.programmablepower.com

SLM-4 Electronic

Load Chassis

Operating and Programming

Manual

M540069-01 Rev B www.programmablepower.com

About Xantrex

Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from small mobile units to utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup power applications in both gridconnected and stand-alone systems. Xantrex products include inverters, battery chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute electrical power.

Trademarks

SLM-4 Electronic Load Chassis is a trademark of Xantrex International. Xantrex is a registered trademark of Xantrex International. Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright

SLM-4 Electronic Load Chassis

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED XANTREX CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Operating and Programming Manual © December 2007

Date and Revision

December 2007 Revision B

Part Number

M540069-01

Contact Information

Telephone: 800 733 5427 (toll free in North America) 858 450 0085 (direct) Fax: 858 458 0267 Email: sales@programmablepower.com service@programmablepower.com Web: www.programmablepower.com

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Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your particular application.

WARNING

Only

qualified personnel

perform installation and servicing. Ensure that the AC power line ground is connected properly to the Power Rack input connector or

chassis. Similarly, other power ground lines including those to application and maintenance equipment

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.

In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The customer/user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.

must

Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuit boards, test points, and output voltages also may be floating above (below) chassis ground.

who deal with attendant hazards in power supplies, are allowed to

be grounded properly for both personnel and equipment safety.

SAFETY SYMBOLS

iii

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ABOUT THIS MANUAL

This manual has been written expressly for the Sorensen SL series of electronic loads, which have been designed and certified to meet the Low Voltage and Electromagnetic Compatibility Directive Requirements of the European Community.

Since the goal of the Low Voltage Directive is to ensure the safety of the equipment operator, universal graphic symbols have been used both on the unit itself and in this manual to warn the operator of potentially hazardous situations (see Safety Information page).

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vi M540069-01 Rev B

CONTENTS

SECTION 1 FEATURES, FUNCTIONS, AND SPECIFICATIONS ....1-1

1.1 Introduction...................................................................................................... 1-1

1.2 Features and Functions................................................................................... 1-2

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

1.4 Regulatory Compliance ................................................................................... 1-2

1.5 System Block Diagram .................................................................................... 1-3

SECTION 2 CONFIGURATION AND MAINTENANCE....................2-1

2.1 INSPECTION................................................................................................... 2-1

2.1.1 Line Voltage......................................................................................... 2-1

2.1.2 Grounding Requirements..................................................................... 2-2

2.1.3 Environmental Requirements .............................................................. 2-3

2.1.4 Rack Mount.......................................................................................... 2-3

2.1.5 Tilt Adjustment ..................................................................................... 2-3

2.1.6 Service or Repair ................................................................................. 2-3

2.1.7 Accessories ......................................................................................... 2-3

2.2 CONNECTIONS .............................................................................................. 2-3

2.2.1 GPIB Connection ................................................................................. 2-3

2.2.2 RS-232C Connection........................................................................... 2-4

2.2.3 Analog Programming Input .................................................................. 2-4

2.3 Maintenance .................................................................................................... 2-4

2.3.1 Cleaning............................................................................................... 2-4

SECTION 3 OPERATION...............................................................3-1

3.1 Introduction...................................................................................................... 3-1

3.2 Power Connection ........................................................................................... 3-1

M540069-01 Rev B vii

3.2.1 Power-On Status..................................................................................3-2

3.3 STORE / RECALL Function .............................................................................3-2

3.3.1 STORE Procedure: ..............................................................................3-2

3.3.2 RECALL Procedure:.............................................................................3-3

3.4 SEQUENCE Function ......................................................................................3-4

3.4.1 EDIT MODE .........................................................................................3-5

3.4.2 TEST MODE ........................................................................................3-5

SECTION 4 GPIB/RS-232 PROGRAMMING OPERATION ............. 4-1

4.1 Introduction ......................................................................................................4-1

4.2 GPIB Commands .............................................................................................4-1

4.3 RS-232 Interface and Commands....................................................................4-1

4.4 GPIB/RS-232C Command List.........................................................................4-2

4.4.1 Command Syntax Abbreviations..........................................................4-2

4.5 GPIB/RS-232 Command Description...............................................................4-7

4.5.1 Setting Commands...............................................................................4-7

4.5.2 Query Commands ..............................................................................4-20

Appendix A GPIB Programming Example Appendix B RS-232 Programming Example Appendix C SLM-series AC Load GPIB/RS-232 Operating Flow Chart Appendix D SLM-series DC Load GPIB/RS-232 Operating Flow Chart Appendix E SLD-series BPIB/RS-232 Operating Flow Chart

LIST OF FIGURES

Figure 1–1 System Block Diagram .............................................................................. 1-3

Figure 2–1 Input Power Setting Switch........................................................................ 2-2

Figure 2–2 Fuse Holder in AC Line Input Connector ................................................... 2-2

Figure 2–3 SLM-4 chassis Rear Panel ........................................................................ 2-4

Figure 2–4 Diagram of Analog Programming Input ..................................................... 2-4

Figure 3–1 SLM-4 Chassis Front Panel....................................................................... 3-1

Figure 3–2 SLM Front Panel Keys and LEDs .............................................................. 3-2

Figure 3–3 Auto Sequence Function Set-Up and Operation Flowchart....................... 3-4

Figure 4–1 RS-232 Interface Diagram ......................................................................... 4-2

Figure 4–2 Protection Status Register....................................................................... 4-23

Figure 4–3 Error Status Byte Register ....................................................................... 4-23

viii M540069-01 Rev B

LIST OF TABLES

Table 1–1 SL-Series Maximum Ratings Specifications................................................1-1

Table 1–2 SLM-4 Chassis Specifications.....................................................................1-2

Table 4–1 GPIB Command Terminator ........................................................................4-3

Table 4–2 GPIB/RS-232 Setting Command Summary.................................................4-4

Table 4–3 GPIB/RS-232 Preset Query Command Summary with Applicable Module

Types ..........................................................................................................4-4

Table 4–4 State Command Summary ..........................................................................4-5

Table 4–5 System Commands - All Modules ...............................................................4-6

Table 4–6 Measure and Limit Commands....................................................................4-6

Table 4–7 Global Commands.......................................................................................4-6

Table 4–8 Waveform Information ...............................................................................4-14

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x M540069-01 Rev B

SECTION 1

FEATURES, FUNCTIONS,

AND SPECIFICATIONS

1.1 INTRODUCTION

The SLM electronic load chassis is designed with open bays to easily receive up to four load modules, which slide into their respective bays from the rear of the chassis. The specification ratings for the SL-series plug-in modules are shown in Table 1-1. Please refer to the Xantrex catalog or to the applicable module operation manual for detailed specifications.

Model Max. current Max. voltage Max. power

SLM-60-20-300 20 Arms 60 Vrms 300 W SLM-150-8-300 8 Arms 150 Vrms 300 W SLM-300-4-300 4 Arms 300 Vrms 300 W SLM-500-1-300 1Arms 300Vrms/500Vdc 300 W SLM-60-30-150 30A 60V 150W SLM-60-60-300 60A 60V 300W SLM-250-10-300 10A 250V 300W SLM-500-10-300 10A 500V 300W SLM-60-15-75 15A 60V 75W SLD-60-505-255 50A/5A +60V/+60V 250W/50W SLD-61-505-255 50A/5A +60V/-60V 250W/50W SLD-60-20-102 20A/20A +60V/+60V 100W/100W SLD-61-5-752 5A/5A +60V/-60V 75W/75W SLD-62-5-752 5A/5A -60V/-60V 75W/75W SLD-60-105-550 100A/5A +60V/+60V 500W/50W

Table 1–1 SL-Series Maximum Ratings Specifications

M540069-01 Rev B 1-1

Features, Functions, Specifications Sorensen SLM-4 Chassis

1.2 FEATURES AND FUNCTIONS

The SLM chassis provides high performance, easy operation and a cost-effective solution for power source testing. The features of the SLM-4 electronic load chassis are:

• Plug-in design allows for easy replacement of different load modules as applications

change.

• Flexible configuration allows any bay to accept any SLM-(single module) or

SLD-(dual) series load module.

• Four analog programming inputs on the rear panel DB9 connector can control the

four SLM load modules' load current with arbitrary waveforms.

• Built-in GPIB/RS232 interface, which uses one GPIB address to control up to four

electronic load modules with set load status and read back meter capabilities.

1.3 SPECIFICATIONS

Specification details of the SLM-4 chassis are shown in Table 1–2.

LINE 100V/115V±10% 200V/230V±10% FREQUENCY 50/60 HZ AC INPUT FUSE T2A/250V (5x20mm) T1A/250V (5x20mm) MAX. POWER

CONSUMPTION DIMENSIONS (W*H*D) 17.3x7.0x17.5 in. (440 x177 x445 mm) WEIGHT NET : 20.9 lbs. (9.3 kg)

100 W

Table 1–2 SLM-4 Chassis Specifications

1.4 REGULATORY COMPLIANCE

• Certified to UL 61010-1, CSA C22.2 No. 61010.1 and IEC/EN 61010-1

• CE Compliant:

o Low Voltage Directive (73/23/EEC) using EN 61010-1, and o EMC Directive (89/336/EEC) using EN 61326

• FCC Compliant to 21 CFR, Subpart J.

1-2 M540069-01 Rev B

Sorensen SLM-4 Chassis Features, Functions, Specifications

1.5 SYSTEM BLOCK DIAGRAM

The system block diagram is shown in Figure 1–1. There are five power supplies in the SLM-4 chassis, one for the system controller and one for each of the four optically isolated channels.

Figure 1–1 System Block Diagram

M540069-01 Rev B 1-3

Features, Functions, Specifications Sorensen SLM-4 Chassis

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1-4 M540069-01 Rev B

SECTION 2

CONFIGURATION AND

MAINTENANCE

2.1 INSPECTION

The SLM-4 chassis was carefully inspected before shipment. If instrument damage has occurred during transport, please inform the Xantrex sales and service office or representative per the Warranty instructions of this manual. SLM-4 chassis was shipped with a power cord for the type of outlet used at your location. If the appropriate cord was not included, please contact your nearest Xantrex sales representative to obtain the correct cord. Refer to Section 2.1.1 to check the line voltage selection and fuse type.

2.1.1 Line Voltage

The SLM-4 chassis and SL-series electronic loads can operate with 100, 115, 200 or 230VAC input as indicated on the label on the rear panel (Figure 2–1). Make sure that the factory check mark corresponds to your nominal line voltage. If not correctly marked, perform the following procedures:

1. With the mainframe power OFF, disconnect the power cord.

2. Set the switches on the rear panel to the proper voltage as follows:

a. Set Switch to 100V/115V for 100Vac or 115Vac line voltage b. Set Switch to 200V/230V for 200Vac or 230Vac

M540069-01 Rev B 2-1

Configuration Sorensen SLM-4 Chassis

Figure 2–1 Input Power Setting Switch

3. Check the rating of the line fuse and replace it with the correct fuse if necessary.

4. The AC line fuse is located below the AC line receptacle (Figure 2–2). With the power cord removed, use a small screwdriver to extract the fuse holder from under the AC socket. Replace the fuse with the appropriate type as indicated in Table 1–2. These fuses are slow-blow fuses.

5. Reinstall fuse holder and reconnect the power cord.

Figure 2–2 Fuse Holder in AC Line Input Connector

2.1.2 Grounding Requirements

The SLM-4 chassis is equipped with a three-conductor cable that plugs into an appropriate receptacle to ground the instrument's cover.

2-2 M540069-01 Rev B

Sorensen SLM-4 Chassis Configuration

2.1.3 Environmental Requirements

• For indoor use only

• Installation Category II (over voltage)

• Pollution Degree 2

• Altitude up to 2000 meters (with power derating)

• Relative Humidity 80% RH Max

• Ambient Operating Temperature 0-40 C

2.1.4 Rack Mount

The SLM-4 chassis is designed to permit mounting in a standard 19-inch rack for system application.

2.1.5 Tilt Adjustment

The SLM-4 chassis is equipped with tilt stands on its two front feet, which can be flipped forward to provide an inclined viewing angle of the front panel for bench-top use.

2.1.6 Service or Repair

If the instrument is damaged, please attach a tag to the instrument, identifying the owner and indicating the required service. Follow the procedures detailed on Page iii of this manual.

2.1.7 Accessories

For each module configured, the following parts should be included in the shipment:

• Three-conductor 18 gauge power cord, 1 ea.

• SLM-4 electronic load chassis operation manual, 1 ea.

• Vsense cable(s) for each input

• Hook terminals for each input

• Banana plugs for each input

• Imonitor BNC cable (if applicable)

2.2 CONNECTIONS

2.2.1 GPIB Connection

The GPIB connector on the rear panel (Figure 2–3) connects the to a controller and to other GPIB devices. A GPIB system can be connected in any configuration (star, linear, or both), with the following provisions:

• The maximum number of devices including the controller is no more than 15.

• The maximum length of all cables is no more than 2 meters times the number of

devices connected together, up to 20 meters maximum.

Ensure that the lock screws are firmly hand-tightened; use a screwdriver only for the removal of screws. Figure 2–3 shows the rear panel of the SLM-4 chassis, where the GPIB connector is located. The GPIB address of the SLM-4 chassis is set on the front panel (Figure 3–1).

M540069-01 Rev B 2-3

Configuration Sorensen SLM-4 Chassis

SLM

Figure 2–3 SLM-4 chassis Rear Panel

2.2.2 RS-232C Connection

The RS-232C connector (female) on the rear panel connects the SLM-4 chassis to the computer's RS-232C port.

2.2.3 Analog Programming Input

The D-sub 9-pin connector on the rear panel connects the SLM-4 chassis to the SLM-Series single input, the DC load module analog programming input, or to the external sync input of SLM-Series AC load module. The pin connections are defined as shown in Figure 2–4.

CH2+

CH2-

CH1+

CH1-

CH4CH4+

CH3CH3+

Figure 2–4 Diagram of Analog Programming Input

2.3 MAINTENANCE

2.3.1 Cleaning

WARNING:

To avoid electrical shock or damage to the meter, do not get water inside the case.

Periodically wipe the case with a damp cloth and detergent; do not use abrasives or solvents.

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3.1 INTRODUCTION

The front panel of the SLM-4 chassis is shown in Figure 3–1.

SECTION 3

OPERATION

Figure 3–1 SLM-4 Chassis Front Panel

3.2 POWER CONNECTION

Before connecting AC power to the SLM chassis, make sure the power source matches the power requirements of the SLM Electronic load chassis (as marked on the rear panel) per Section 2.1.1. The power switch in the lower left corner of the chassis turns power On/Off to the chassis and to all SL-series electronic load modules.

PREVENT DAMAGE TO THE LOAD: Do NOT apply voltage or current with power

switched OFF. Turn ON the power switch to the load PRIOR to applying voltage or current to the input terminals (i.e., before turning on the power supply under test).

M540069-01 Rev B 3-1

Operation Sorensen SLM-4 Chassis

3.2.1 Power-On Status

Local/manual operation displays:

STORE/RECALL: All LEDs are OFF; BANK LED display shows 01; SL-series

electronic load is in Power On initial state (please refer to the appropriate SL-series Electronic Load Operations Manual for the startup state of each module).

GPIB address setting:

1. GPIB address is set by pressing STATE 4+STATE 5 simultaneously.

2. Press UP or DOWN on the BANK keys to select the address number (0-31).

3. Press STATE 2 to exit GPIB address setting mode.

Figure 3–2 SLM Front Panel Keys and LEDs

3.3 STORE / RECALL FUNCTION

The eight function keys on the front panel of SLM chassis are designed for high throughput testing. There are 30 banks of 5 operation states for a total of 150 testing steps that can be stored in EEPROM memory. Each state can save or recall the load status and level for four electronic load modules simultaneously. For more detail about the STORE and RECALL functions, refer to the operation flow-chart in the applicable SL-Series Electronic Load Module Operations Manual.

3.3.1 STORE Procedure:

1. Set the load status and load level for each load module within the chassis.

2. For AC loads, go to the next step in this procedure. For DC load modules, select the Memory Bank (01-30) for storing the load status and level.

3. Press the STORE key on the SLM chassis, the STORE LED begins flashing to indicate ready to store. Either press a State key (next step in this procedure), or Exit by pressing Store key again or by waiting 20 seconds, at which time the STORE LED will turn off to prevent accidentally overwriting a memory state.

4. Press one of the State 1-5 keys. The appropriate State key's LED will light immediately; the load level and status of SL-series load module is now stored into the EEPROM memory. The STORE procedure is completed when the STORE LED turns OFF.

Notes:

If more than one state is stored in the same State key, the last one entered will be treated as an update and will overwrite the previously input state.

After pressing the STORE key, the front panel keys on the SL-series electronic load module are still active. However, the STATE LED will turn off if any key on any load module is pressed. This indicates that the front panel state of the load module is not the same as stored state.

3-2 M540069-01 Rev B

Sorensen SLM-4 Chassis Operation

3.3.2 RECALL Procedure:

For SLM AC series:

Press one of the Memory State 1 through 5 keys; the appropriate LED will be lit, and

the stored states on the SLM chassis will be sent to all modules simultaneously. If any key is pressed on a load module, the state LED indicator turns off immediately, to indicate that the module state no longer matches the recalled state.

For DC loads:

Use UP and Down keys to select the Memory Bank, then follow the Recall operation in

the preceding paragraph.

M540069-01 Rev B 3-3

Operation Sorensen SLM-4 Chassis

3.4 SEQUENCE FUNCTION

There are two modes in the SEQUENCE function: EDIT MODE and TEST MODE, The AUTO SEQ function can be initiated by pressing State 3 + State 4 keys simultaneously. To enter EDIT MODE, press STORE; to enter the TEST MODE, press START key. Please refer to the flow chart in Figure 3–3. A brief description of each mode follows the flow chart.

Bank LED

Display

Start

Bank LED

Display

Step Number

Bank Number

"t1" when

STORE button

is held

t1 test time,

when STORE

is released

"t2" when

STORE button

is held

t2 delay time, when STORE

is released

Press

STORE Button

Select Memory Location: Press Bank Up/Down,

State 1-5

Press STORE

Button

Press BANK Up/

Down to select t1

time in 0.1sec

Press STORE

Button

Press BANK Up/

Down to select t2

time in 0.1sec

EDIT

S3+S4 Buttons

Simultaneously

BANK Up/Down

Keys to select

sequence number

EDIT Seq or

RUN Seq

Press

EXIT Button

Press

YES

RUN

Press

START Button

Testing

Exit?

End? Step = Step + 1

Test sequence

number nx

Test

sequence

number nx

Memory Bank

and State under test

YES

Pass/Fail

Press Exit Key

FAIL

GO / NG

YES

Press

EXIT Button

Is Step=16 (F)

End?

Press STORE

Button

Step=Step+1

PASS

Display GO Display NG

Figure 3–3 Auto Sequence Function Set-Up and Operation Flowchart

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