Danfoss VLT FC 102 Programming Manual page 747

Programming Guide | VLT® HVAC Drive FC 102
3 = Third drive module from the left (in 4-module systems).
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4 = Fourth drive module from the left (in 4-module systems).
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Troubleshooting
Check the power card.
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Check the gate drive card.
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Check the ribbon cable between the power card and the gate drive card.
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ALARM 246, Power Card Supply
Cause
The supply on the power card is out of range. This alarm is only for multi-drive systems. It is equivalent to Alarm 46, Power card supply.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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ALARM 247, Power Card Temperature
Cause
This alarm is only for multi-drive systems. It is equivalent to Alarm 69, Power card temperature.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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ALARM 248, Illegal Power Section Configuration
Cause
This alarm is only for multi-drive systems. It is equivalent to Alarm 79, Illegal power section configuration.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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Troubleshooting
Check the current scaling cards on the MDCIC.
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WARNING 249, Rect. Low Temperature
Cause
The temperature of the rectifier heat sink is too low, which indicates that the temperature sensor may be detect.
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Troubleshooting
AU430028034214en-001901 / 130R0310 | 747