Sorensen SL-60-30-150 Use and care manual

SL-SERIES
SLM DC MODULAR/
SLH HIGH POWER DC
ELECTRONIC LOADS
Calibration Manual
Elgar Electronics Corporation
9250 Brown Deer Road
San Diego, CA 92121-2294
1-800-73ELGAR (1-800-733-5427)
Tel: [phone] www.elgar.com
Fax: [phone]
Email: [email protected]
©2006 by Elgar Electronics Corporation
This document contains information proprietary to Elgar Electronics Corporation. The information contained herein is not to be
duplicated or transferred in any manner without prior written permission from Elgar Electronics Corporation.
July 31, 2006 Document No. M540070-04 Rev A

CONTENTS
SECTION 1 OPERATION DESCRIPTION 1-1
1.1 NAVIGATION AND SETTING 1-2
SECTION 2 CALIBRATION 2-1
2.1 CALIBRATION SETUP 2-1
2.1.1 Equipment Required ......................................................................................... 2-1
2.2 DVM CALIBRATION 2-1
2.2.1 DVM, Range I Offset and Gain, Items 1 and 2.................................................. 2-2
2.2.2 DVM, Range II Offset and Gain, Items 3 and 4................................................. 2-3
2.3 VSENSE CALIBRATION 2-4
2.3.1 VSense, Range I Offset and Gain, Items 5 and 6 ............................................. 2-4
2.3.2 VSense, Range II Offset and Gain, Items 7 and 8 ............................................ 2-5
2.4 DAM AND CC MODE CALIBRATIONS 2-7
2.4.1 DAM, Range I Offset and Gain, Items 9 and 10................................................ 2-7
2.4.2 DAM, Range II Offset and Gain, Items 11 and 12............................................. 2-9
2.4.3 CC Mode, Level Low, Range I Offset and Gain, Items 13 and 14 .......... 2-10
2.4.4 CC Mode, Level High, Range I Offset and Gain, Items 15 and 16 ......... 2-12
2.4.5 CC Mode, Level Low, Range II Offset and Gain, Items 17 and 18......... 2-13
2.4.6 CC Mode, Level High, Range II Offset and Gain, Items 19 and 20 ........ 2-15
2.5 CR MODE CALIBRATION 2-16
2.5.1 CR Mode, Level Low, Range I Offset and Gain, Items 21 and 22 .......... 2-17
2.5.2 CR Mode, Level High, Range I Offset and Gain Items 23 and 24........... 2-19
2.5.3 CR Mode, Level Low, Range II Offset and Gain, Items 25 and 26........ 2-21
2.5.4 CR Mode, Level High, Range II Offset and Gain, Items 27 and 28 ........ 2-23
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2.6 CV MODE CALIBRATION 2-25
2.6.1 CV Mode, Level Low, Offset and Gain, Items 29 and 30................................ 2-26
2.6.2 CV Mode, Level High, Offset and Gain, Items 31 and 32........................ 2-28
2.7 CP MODE CALIBRATION 2-29
2.7.1 CP Mode, Level Low, Offset and Gain, Items 33 and 34 ................................ 2-30
2.7.2 CP Mode, Level High, Offset and Gain, Items 35 and 36................................ 2-32
2.8 STORE CALIBRATION DATA 2-33
SECTION 3 CALIBRATION DATA RECORD 3-1
LIST of FIGURES
Figure 1-1. SLM Series Front Panel .....................................................................................................1-1
Figure 2-1. Connections for DVM Calibration Items 1-4)......................................................................2-1
Figure 2-2. Connections for Vsense Calibration (Items 5-8).................................................................2-4
Figure 2-3. Connections for DAM and CC Mode Calibrations..............................................................2-7
Figure 2-4. Connections for CR Mode Calibration..............................................................................2-16
Figure 2-5. CV Mode Calibration Connections ...................................................................................2-25
Figure 2-6. Connections for CP Mode Calibration..............................................................................2-29
LIST of TABLES
Table 2-1. DVM, Range I Offset Adjustment Settings (Item 1).............................................................2-2
Table 2-2. DVM Range I Gain Adjustment Settings (Item 2)................................................................2-2
Table 2-3. DVM, Range II Gain Adjustment Settings (Item 3)..............................................................2-3
Table 2-4. DVM, Range II Gain Adjustment Settings (Item 4)..............................................................2-3
Table 2-5. VSense, Range I Offset Adjustment Settings (Item 5).........................................................2-4
Table 2-6. VSENSE, Range I Gain Adjustment Settings (Item 6).........................................................2-5
Table 2-7. VSENSE, Range II Offset Adjustment Settings (Item 7)......................................................2-5
Table 2-8. VSense, Range II Gain Adjustment Settings (Item 8)..........................................................2-6
Table 2-9. DAM, Range I Offset Adjustment Settings (Item 9).............................................................2-7
Table 2-10. DAM, Range I Gain Adjustment Settings (Item 10)..........................................................2-8
Table 2-11. DAM, Range II Offset Adjustment Settings (Item 11).......................................................2-9
Table 2-12. DAM, Range II Gain Adjustment Settings (Item 12)........................................................2-10
Table 2-13. CC Mode, Level Low, Range I Offset Adjustment Settings (Item 13)..............................2-10
Table 2-14. CC Mode, Level Low, Range I Gain Adjustment Settings (Item 14)................................2-11
Table 2-15. CC Mode, Level High, Range I Offset Adjustment Settings (Item 15).............................2-12
Table 2-16. CC Mode, Level High, Range I Gain Adjustment Settings (Item 16)...............................2-13
Table 2-17. CC Mode, Level Low, Range II Offset Adjustment Settings (Item 17).............................2-13
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Table 2-18. CC Mode, Level Low, Range II Gain Adjustment Settings (Item 18)...............................2-14
Table 2-19. CC Mode, Level High, Range II Offset Adjustment Settings (Item 19)............................2-15
Table 2-20. CC Mode, Level High, Range II Gain Adjustment Settings (Item 20)..............................2-16
Table 2-21. CR Mode, Level Low, Range I Offset Adjustment Settings (Item 21)...............................2-17
Table 2-22. CR Mode, Level Low, Range I Gain Adjustment Settings (Item 22)................................2-18
Table 2-23. CR Mode, Level High, Range I Offset Adjustment Settings (Item 23).............................2-19
Table 2-24. CR Mode, Level High, Range I Gain Adjustment Settings (Item 24)...............................2-20
Table 2-25. CR Mode, Level Low, Range II Offset Adjustment Settings (Item 25).............................2-21
Table 2-26. CR Mode, Level Low, Range II Gain Adjustment Settings (Item 26)...............................2-22
Table 2-27. CR Mode, Level High, Range II Offset Adjustment Settings (Item 27)............................2-23
Table 2-28. CR Mode, Level High, Range II Gain Adjustment Settings (Item 28)..............................2-24
Table 2-29. CV Mode, Level Low, Offset Adjustment Settings (Item 29)............................................2-26
Table 2-30. CV Mode, Level Low, Gain Adjustment Settings (Item 30)..............................................2-27
Table 2-31. CV Mode, Level High, Offset Adjustment Settings (Item 31)...........................................2-28
Table 2-32. CV Mode, Level High, Gain Adjustment Settings (Item 32).............................................2-29
Table 2-33. CP Mode, Level Low, Offset Adjustment Settings (Item 33)............................................2-30
Table 2-34. CP Mode, Level Low, Gain Adjustment Settings (Item 34)..............................................2-31
Table 2-35. CP Mode, Level High, Offset Adjustment Settings (Item 35)...........................................2-32
Table 2-36. CP Mode, Level High, Gain Adjustment Settings (Item 36).............................................2-33
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iv SLM/SLH Calibration Manual

SECTION 1
OPERATION DESCRIPTION
This section provides a brief orientation for how to enter, navigate, adjust and
store settings, and exit the calibration mode.
Figure 1-1. SLM Series Front Panel
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Operation Description Elgar Electronics Corporation
1.1 NAVIGATION AND SETTING
1. Press MODE and LEVEL keys simultaneously to enter calibration mode.
2. Press ©(large up arrow) key to move to the next item.
3. Press ª(large down arrow) key to move to the previous item.
4. Press  (smaller arrow) keys to adjust the calibration settings.
5. Press the SHORT key to store the calibration settings.
6. Press the LIMIT key to exit the calibration mode.
1.1.1 CALIBRATION PROCEDURE FLOW CHART
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SECTION 2
CALIBRATION
2.1 CALIBRATION SETUP
Prior to starting the calibration procedure, gather the necessary equipment
(Section 2.1.1), then power up the chassis and allow it to warm up for 15
minutes.
2.1.1 EQUIPMENT REQUIRED
• DC Voltage Standard: Krohn-Hite EDC 521
• Current Shunt: Prodigit 7550
• Digital Multi-Meter (DMM): Agilent 34401A
• DC Power Supply: Sorensen SG Series (Supply depends upon
models being calibrated.)
2.2 DVM CALIBRATION
Connect the SL Series electronic load as shown in Figure 2-1
Figure 2-1. Connections for DVM Calibration Items 1-4)
Press MODE and LEVEL keys simultaneously to enter Calibration Mode and
to be at Item 1 to start calibration.
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Calibration Elgar Electronics Corporation
2.2.1 DVM, RANGE I OFFSET AND GAIN, ITEMS 1 AND 2
7. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-1 for the load model being calibrated.
8. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
MODEL MODEL
Input Voltage Input Voltage
SLM-60-30-150 0.200V
SLH-60-120-600 0.200V
SLM-60-60-300 0.200V
SLH-60-120-1200 0.200V
SLM-250-10-300 0.200V
SLH-60-120-1800 0.200V
SLM-500-10-300 0.400V
SLH-60-240-1200 0.200V
SLM-60-15-75 0.200V
SLH-60-240-1800 0.200V
SLH-60-360-1800 0.200V
SLH-500-60-1800 0.400V
Table 2-1. DVM, Range I Offset Adjustment Settings (Item 1)
9. Press the ©key to go to Item 2.
10. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-2 for the load model being calibrated.
11. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
12. Repeat steps 1 through 5 (press ªto return to Item 1) until no further
adjustments are necessary for the load DVM to match the DMM
reading.
MODEL MODEL
Input Voltage Input Voltage
SLM-60-30-150 15.00V
SLH-60-120-600 15.00V
SLM-60-60-300 15.00V
SLH-60-120-1200 15.00V
SLM-250-10-300 30.00V
SLH-60-120-1800 15.00V
SLM-500-10-300 60.00V
SLH-60-240-1200 15.00V
SLM-60-15-75 15.00V
SLH-60-240-1800 15.00V
SLH-60-360-1800 15.00V
SLH-500-60-1800 60.00V
Table 2-2. DVM Range I Gain Adjustment Settings (Item 2)
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2.2.2 DVM, RANGE II OFFSET AND GAIN, ITEMS 3 AND 4
1. Press the ©key to go to Item 3.
2. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-3 for the model being calibrated.
3. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
Item 3 Item 3
Input Voltage Input Voltage
SLM-60-30-150 0.200V SLH-60-120-600 0.200V
SLM-60-60-300 0.200V SLH-60-120-1200 0.200V
SLM-250-10-300 0.200V SLH-60-120-1800 0.200V
SLM-500-10-300 0.400V SLH-60-240-1200 0.200V
SLM-60-15-75 0.200V
SLH-60-240-1800 0.200V
SLH-60-360-1800 0.200V
SLH-500-60-1800 0.400V
Table 2-3. DVM, Range II Gain Adjustment Settings (Item 3)
4. Press the ©key to go to Item 4.
5. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-4 for the model being calibrated.
6. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
7. Repeat steps 1 through 6 (press ªto return to Item 3) until no further
adjustments are necessary for the load DVM to match the DMM
reading.
MODEL Input Voltage MODEL Input Voltage
SLM-60-30-150 60.00V SLH-60-120-600 60.00V
SLM-60-60-300 60.00V SLH-60-120-1200 60.00V
SLM-250-10-300 250.00V SLH-60-120-1800 60.00V
SLM-500-10-300 500.00V SLH-60-240-1200 60.00V
SLM-60-15-75 60.00V SLH-60-240-1800 60.00V
SLH-60-360-1800 60.00V
SLH-500-60-1800 500.00V
Table 2-4. DVM, Range II Gain Adjustment Settings (Item 4)
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Calibration Elgar Electronics Corporation
2.3 VSENSE CALIBRATION
Make the connections for VSENSE calibration as shown in Figure 2-2.
Figure 2-2. Connections for Vsense Calibration (Items 5-8).
2.3.1 VSENSE, RANGE I OFFSET AND GAIN, ITEMS 5 AND 6
1. Press the ©key to go to Item 5.
2. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-5 for the model being calibrated.
3. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
MODEL Input Voltage MODEL Input Voltage
SLM-60-30-150 0.200V SLH-60-120-600 0.200V
SLM-60-60-300 0.200V SLH-60-120-1200 0.200V
SLM-250-10-300 0.200V SLH-60-120-1800 0.200V
SLM-500-10-300 0.400V SLH-60-240-1200 0.200V
SLM-60-15-75 0.200V SLH-60-240-1800 0.200V
SLH-60-360-1800 0.200V
SLH-500-60-1800 0.400V
Table 2-5. VSense, Range I Offset Adjustment Settings (Item 5)
4. Press the ©key to go to Item 6.
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5. Set the DC Voltage Standard to the Input Voltage value shown in
Table 2-6 for the model being calibrated.
6. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
7. Repeat steps 1 through 6 (press ªto return to Item 5) until no further
adjustments are necessary for the load DVM to match the DMM
reading.
MODEL MODEL
Input Voltage Input Voltage
SLM-60-30-150 15.00V
SLH-60-120-600 15.00V
SLM-60-60-300 15.00V
SLH-60-120-1200 15.00V
SLM-250-10-300 30.00V
SLH-60-120-1800 15.00V
SLM-500-10-300 60.00V
SLH-60-240-1200 15.00V
SLM-60-15-75 15.00V
SLH-60-240-1800 15.00V
SLH-60-360-1800 15.00V
SLH-500-60-1800 60.00V
Table 2-6. VSENSE, Range I Gain Adjustment Settings (Item 6)
2.3.2 VSENSE, RANGE II OFFSET AND GAIN, ITEMS 7 AND 8
1. Press the ©key to go to Item 7.
2. Set the DC Voltage Standard to the Input Voltage value shown in Table
2-7 for the model being calibrated.
3. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
MODEL Input Voltage MODEL Input Voltage
SLM-60-30-150 0.200V SLH-60-120-600 0.200V
SLM-60-60-300 0.200V SLH-60-120-1200 0.200V
SLM-250-10-300 0.200V SLH-60-120-1800 0.200V
SLM-500-10-300 0.400V SLH-60-240-1200 0.200V
SLM-60-15-75 0.200V SLH-60-240-1800 0.200V
SLH-60-360-1800 0.200V
SLH-500-60-1800 0.400V
Table 2-7. VSENSE, Range II Offset Adjustment Settings (Item 7)
4. Press the ©key to go to Item 8.
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Calibration Elgar Electronics Corporation
5. Set the DC Voltage Standard to the Input Voltage value shown in Table
2-8 for the model being calibrated.
6. Use the  keys to adjust the load DVM display until it matches the
DMM reading.
7. Repeat steps 1 through 6 (press ªto return to Item 7) until no further
adjustments are necessary for the DVM display to match the DMM
reading.
MODEL Input Voltage MODEL Input Voltage
SLM-60-30-150 60.00V SLH-60-120-600 60.00V
SLM-60-60-300 60.00V SLH-60-120-1200 60.00V
SLM-250-10-300 250.00V SLH-60-120-1800 60.00V
SLM-500-10-300 500.00V SLH-60-240-1200 60.00V
SLM-60-15-75 60.00V
SLH-60-240-1800 60.00V
SLH-60-360-1800 60.00V
SLH-500-60-1800 500.00V
Table 2-8. VSense, Range II Gain Adjustment Settings (Item 8)
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2.4 DAM AND CC MODE CALIBRATIONS
The following three steps apply to both DAM and CC Mode Calibration, Items
9-20:
1. Connect the DC Power supply to input terminal, as shown in Figure
2-3.
2. Set the power supply voltage to +5Vdc.
Figure 2-3. Connections for DAM and CC Mode Calibrations
2.4.1 DAM, RANGE I OFFSET AND GAIN, ITEMS 9 AND 10
1. Press the ©key to go to Item 9.
2. LOAD OFF.
3. PRES ON.
4. Set the load current as shown in Table 2-9 for the model being
calibrated.
5. PRES OFF.
6. LOAD ON.
7. Adjust using the  keys until the load DAM reading matches the
DMM reading.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 0.00A SLH-60-120-600 0.00A
SLM-60-60-300 0.00A SLH-60-120-1200 0.00A
SLM-250-10-300 0.00A SLH-60-120-1800 0.00A
SLM-500-10-300 0.00A SLH-60-240-1200 0.00A
SLM-60-15-75 0.00A SLH-60-240-1800 0.00A
SLH-60-360-1800 0.00A
SLH-500-60-1800 0.00A
Table 2-9. DAM, Range I Offset Adjustment Settings (Item 9)
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Calibration Elgar Electronics Corporation
8. LOAD OFF.
9. Press the ©key to go to Item 10.
10. PRES ON.
11. Set the load current as shown in Table 2-10 for the model being
calibrated.
12. PRES OFF.
13. LOAD ON.
14. Adjust using the  keys until the shunt current and the load DAM
reading match.
15. Repeat steps 1 through 14 (press ªto return to Item 9) until no
further adjustments are necessary for the load DAM to match the
DMM reading.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 3.000A SLH-60-120-600 12.00A
SLM-60-60-300 6.000A SLH-60-120-1200 12.00A
SLM-250-10-300 1.0050A SLH-60-120-1800 12.00A
SLM-500-10-300 1.0050A SLH-60-240-1200 24.00A
SLM-60-15-75 1.500A SLH-60-240-1800 24.00A
SLH-60-360-1800 36.00A
SLH-500-60-1800 6.000A
Table 2-10. DAM, Range I Gain Adjustment Settings (Item 10)
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2.4.2 DAM, RANGE II OFFSET AND GAIN, ITEMS 11 AND 12
1. LOAD OFF.
2. Press the ©key to go to Item 11.
3. PRES ON.
4. Set the load current as shown in Table 2-11 for the model being
calibrated.
5. PRES OFF.
6. LOAD ON.
7. Adjust using the  keys until the load DAM matches the DMM
reading.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 0.00A SLH-60-120-600 0.00A
SLM-60-60-300 0.00A SLH-60-120-1200 0.00A
SLM-250-10-300 0.00A SLH-60-120-1800 0.00A
SLM-500-10-300 0.00A SLH-60-240-1200 0.00A
SLM-60-15-75 0.00A SLH-60-240-1800 0.00A
SLH-60-360-1800 0.00A
SLH-500-60-1800 0.00A
Table 2-11. DAM, Range II Offset Adjustment Settings (Item 11)
8. Load OFF.
9. Press the ©key to go to Item 12.
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Calibration Elgar Electronics Corporation
10. PRES ON.
11. Set the load current as shown in Table 2-12 for the model being
calibrated.
12. PRES OFF.
13. LOAD ON.
14. Adjust using the  keys until the shunt current and the load DAM
reading match.
15. Repeat steps 1 through 14 (press ªto return to Item 11) until no
further adjustments are necessary for the load DAM to match the
DMM reading.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 30.00A SLH-60-120-600 120.00A
SLM-60-60-300 60.00A SLH-60-120-1200 120.00A
SLM-250-10-300 10.050A SLH-60-120-1800 120.00A
SLM-500-10-300 10.050A SLH-60-240-1200 240.00A
SLM-60-15-75 15.000A SLH-60-240-1800 240.00A
SLH-60-360-1800 360.00A
SLH-500-60-1800 60.00A
Table 2-12. DAM, Range II Gain Adjustment Settings (Item 12)
2.4.3 CC MODE, LEVEL LOW, RANGE I OFFSET AND GAIN, ITEMS 13 AND 14
1. LOAD OFF (Power supply voltage should still be at +5Vdc).
2. Press the ©key to go to Item 13.
3. PRES ON.
4. Set the load current as shown in Table 2-13 for the model being
calibrated.
5. PRES OFF.
6. LOAD ON.
7. Adjust using the  keys until the shunt current and the current
setting match.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 0.00A SLH-60-120-600 0.00A
SLM-60-60-300 0.00A SLH-60-120-1200 0.00A
SLM-250-10-300 0.00A SLH-60-120-1800 0.00A
SLM-500-10-300 0.00A SLH-60-240-1200 0.00A
SLM-60-15-75 0.00A SLH-60-240-1800 0.00A
SLH-60-360-1800 0.00A
SLH-500-60-1800 0.00A
Table 2-13. CC Mode, Level Low, Range I Offset Adjustment Settings (Item 13)
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8. LOAD OFF.
9. Press the ©key to go to Item 14.
10. PRES ON.
11. Set the load current as shown in Table 2-16 for the model being
calibrated.
12. PRES OFF.
13. LOAD ON.
14. Adjust using the  keys until the shunt current and the current
setting match.
15. Repeat steps 1 through 14 (press ªto return to Item 13) until no
further adjustments are necessary for the shunt current and the
current setting to match.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 3.000A SLH-60-120-600 12.00A
SLM-60-60-300 6.000A SLH-60-120-1200 12.00A
SLM-250-10-300 1.0050A SLH-60-120-1800 12.00A
SLM-500-10-300 1.0050A SLH-60-240-1200 24.00A
SLM-60-15-75 1.500A SLH-60-240-1800 24.00A
SLH-60-360-1800 36.00A
SLH-500-60-1800 6.000A
Table 2-14. CC Mode, Level Low, Range I Gain Adjustment Settings (Item 14)
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Calibration Elgar Electronics Corporation
2.4.4 CC MODE, LEVEL HIGH, RANGE I OFFSET AND GAIN, ITEMS 15 AND 16
1. LOAD OFF.
2. Press the ©key to go to Item 15.
3. PRES ON.
4. Set the load current as shown in Table 2-15 for the model being
calibrated.
5. PRES OFF.
6. LOAD ON.
7. Adjust using the  keys until the shunt current and the current
setting match.
MODEL Current Setting MODEL Current Setting
SLM-60-30-150 0.00A SLH-60-120-600 0.00A
SLM-60-60-300 0.00A SLH-60-120-1200 0.00A
SLM-250-10-300 0.00A SLH-60-120-1800 0.00A
SLM-500-10-300 0.00A SLH-60-240-1200 0.00A
SLM-60-15-75 0.00A SLH-60-240-1800 0.00A
SLH-60-360-1800 0.00A
SLH-500-60-1800 0.00A
Table 2-15. CC Mode, Level High, Range I Offset Adjustment Settings (Item 15)
8. LOAD OFF.
9. Press the ©key to go to Item 16.
10. PRES ON.
11. Set the load current as shown in Table 2-16 for the model being
calibrated.
12. PRES OFF.
13. LOAD ON.
14. Adjust using the  keys until the shunt current and the current
setting match.
15. Repeat steps 1 through 14 (press ªto return to Item 15) until no
further adjustments are necessary for the shunt current and the
current setting to match.
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