Issue:
Troubleshooting an SCF3 fault on an Altivar Process Drive.
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All products of Altivar Process Drive
Cause:
N/A
Resolution:
Description
SCF3 - Ground Short Circuit Fault
Earth fault at the output
Possible causes
 
Troubleshooting an SCF3 fault on an Altivar Process Drive.
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All products of Altivar Process Drive
Cause:
N/A
Resolution:
Description
SCF3 - Ground Short Circuit Fault
Earth fault at the output
Possible causes
- Short circuit or earth fault at the inverter output.
- Short circuit on a motor with long cables.
- Insulation fault in the motor or in the cables.
- Perform Diagnostic Test - IGBT or Transistor Test
 
- Check the cables connecting the drive to the motor and the motor insulation. - Megger motor from cables. Use at least 1000v
- Check for proper grounding
 
- Check distance between drive and motor - Over 165 ft may require the use of a load reactor or filter
 
- Check Switching Frequency - Lower it if possible
 
Publié pour: Schneider Electric Belgium




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