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What is a SCF3 fault on a ATV320 drive?

Published date: 22 June 2020

ATV320 drive showing an SCF3 fault

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Recheck all the motor parameters. Check all the cables connecting the drive to the motor, and the motor insulation. Reduce the switching frequency. Check the adjustment of speed loop and/or brake, if applicable. Increase the Time to Restart ( ttr parameter in Set menu) - if there is a brake?  Disconnect the motor leads and then turn off the OPL and try to run the drive open circuit and see if it still faults.  If it does, the drive appears to be inoperative 

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