Short Circuit or Ground Fault During Constant Speed

What does OC3P mean?

This fault indicates a short circuit or ground fault condition detected while the Altivar 212 drive is operating at a constant speed, potentially also due to a malfunctioning cooling fan.

• Short circuit or ground fault during constant speed operation.
• The drive cooling fan is not working.

Click steps to track your progress.

1. 1

   Use a 1000 V testing tool (megger) to check the motor and motor cables for ground faults.

2. 2

   Check the operation of the drive's cooling fan.