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What can cause an OC3 fault on the ATV21 and ATV212 drives?

Issue:
What can cause an OC3 fault on the ATV21 and ATV212 drives?

Product Line:
Altivar ATV21 and ATV212 including the S-Flex 212

Environment:
All

Cause:
The drive is running and intermittently trips out on the OC3 fault.

Resolution: 
OC3 means overcurrent during constant speed operation.
Possible causes: Abrupt fluctuations in the load or abnormal load conditions.
Remedies: Reduce the load fluctuations, check your load or try setting the parameter F316 to 1 or 3.
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