Cause : Output phase loss - comes when motor circuit fault due to missing motor connection due to any of the three phases not connected.

1. In scalar control mode, the drive detects fault only when the output frequency is above 10% of the motor nominal frequency.
2. This fault can be disable - programmable fault: 31.19 Motor phase loss Connect motor cable.
3. If the drive is in scalar mode and nominal current of the motor is less than 1/6 of the nominal output current of the drive, set parameter 31.19 Motor phase loss to No action.