oPL fault Emotron VSB Drive indicates Output phase loss. This means one or more phases in the power being delivered from the inverter to the motor are disconnected or severely unbalanced.
Possible Causes:
1: Motor cable connection abnormal.
2: Imbalance among motor three phases.
3: Incorrect setting of vector control parameters.
Solutions:
1: Check motor connection.
2: Check or replace the motor.
3: Correctly set vector control parameters.