Issue:
Troubleshooting a SCF4 on an Altivar Process Drive.
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All serial numbers for Altivar Process Drive
Cause:
N/A
Resolution:
The SCF4 code is an IGBT Short Circuit Error
Cause:
During the power up routine all IGBTs are checked for short circuit. This error indicates a bad test result (short circuit or interruption) has been detected for at least one IGBT module.
Remedies:
Troubleshooting a SCF4 on an Altivar Process Drive.
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All serial numbers for Altivar Process Drive
Cause:
N/A
Resolution:
The SCF4 code is an IGBT Short Circuit Error
Cause:
During the power up routine all IGBTs are checked for short circuit. This error indicates a bad test result (short circuit or interruption) has been detected for at least one IGBT module.
Remedies:
- Check the motor and cable for possible short, phase to phase or phase to ground.
- If the drive will reset after a power cycle, perform the Diagnostic Test
- [Diagnostics] [Diag. data] [Diagnostics]
- [IGBT Diag w motor] if motor is connected to the drive
- [IGBT Diag w/o motor] if motor is not connected to the drive
- [Diagnostics] [Diag. data] [Diagnostics]
- If test reads a short on an IGBT, with the motor connected, then disconnect it and re-test. If the drive still has an issue with out the motor connected, the drive may need to be replaced
- Follow the steps in this FAQ to test the IGBT's: https://www.se.com/ww/en/faqs/FA314404/
- If test passes (no shorted IGBT),:
- Check motor connections
- Reduce switching frequency
- Run drive with no motor connected and OPL turned off
- To disable Output Phase Loss:
- [Complete settings] [Error/Warning handling] [Output phase loss]
- To disable Output Phase Loss:
- Check Ctt: Motor Control Type in [Complete settings] [Motor Parameters] and change to U/F VC Standard
- Be sure to change settings back after testing is complete