Environment:
All serial numbers for Altivar Process Drive
Cause:
N/A
Resolution:
Description The drive is protected against short circuit between the phase output and phase and phase to the ground. When there is a short circuit, the inverter indicates the fault message SCF1
Cause
Short circuit at the inverter output.
Short circuit or earth fault in the motor or motor cable.
Earth fault.
Remedies
Verify the cables connecting the drive to the motor, and the motor insulation.
Adjust the switching frequency.
Connect chokes in series with the motor
Increase the [Time to restart] ttr
Connect chokes in series with the motor.
Verify the adjustment of speed loop and brake.
Disconnect motor from drive and disable Output Phase Loss [Complete settings] [Error/Warning handling] [Output phase loss], then run the drive with no motor connect.