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What would cause the ATV71 to fault on EPF2?
Issue:
ATV71  EPF2 fault

Product line:
Altivar 71, ATV71

Environment:
All model number, all serial numbers

Cause:
Customer replaced ATV61 with ATV71, and moved the Bacnet card over to the ATV71 drive.  Now, it trips on EPF2 all the time.

Resolution:
EPF2 is a communication network fault. In this case, the ATV71 drive is not compatible with Bacnet communication. The Bacnet card will fit into the drive, but will cause the EPF2 error.  In order to clear the fault, remove the Bacnet card and cycle power the drive.

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