Xantrex SLM-4 Owner's manual

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
Smart choice for power
M540069-01 Rev B www.programmablepower.com
SLM-4 Electronic
Load Chassis
Operating and Programming
Manual

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 grid-
connected 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 Operating and Programming Manual © December 2007
Xantrex International. All rights reserved.
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.
Date and Revision
December 2007 Revision B
Part Number
M540069-01
Contact Information
Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email: [email protected]
[e-mail]
Web: www.programmablepower.com
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ii

Important Safety Instructions
Before applying power to the system, verify that your product is configured properly for your
particular application.
WARNING
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.
Only qualified personnel who deal with attendant hazards in power supplies, are allowed to
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
must be grounded properly for both personnel and equipment safety.
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.
SAFETY SYMBOLS
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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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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
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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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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 100 W
DIMENSIONS (W*H*D) 17.3x7.0x17.5 in. (440 x177 x445 mm)
WEIGHT NET : 20.9 lbs. (9.3 kg)
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.
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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
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Features, Functions, Specifications Sorensen SLM-4 Chassis
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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.
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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.
CH1+
CH1-
CH2+
CH2-
CH4+
CH4-
CH3+
CH3-
15
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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