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What can cause an EFP1 external fault on the ATV61 and ATV71 drives?

Issue:
What can cause an EFP1 external fault on the ATV61 and ATV71 drives?

Product Line:
Altivar ATV61 and ATV71 drive

Environment:
All

Cause:
Assigned input for external fault is open or not closed triggering an external fault.

Resolution:
EPF1 [External flt-LI/Bit] • Fault triggered by an external device,
depending on user.  check the external fault assignment to see if that logic input is active or not. 
 
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