What would cause an EPF fault on the Altivar ATV31 and ATV312 drives?

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Issue:
EPF fault on the Altivar ATV31 and ATV312 drives.

Product Line:
Altivar ATV31 and ATV312

Environment:
All

Cause:
Drive is tripping on EPF fault on power up?

Resolution:
EPF is an external fault. Check your logic inputs in the FLT menu code EtF to see if its an logic input.