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What would cause an FD1 or FD2 fault on the ATV212 drive?

Issue:
What would cause an FD1 or FD2 fault on the ATV212 drive?

Product Line:
Altivar ATV212 or S-Flex 212 enclosed

Environment:
All except the ATV21 and SFD21 drives

Cause:
Drive is intermittently tripping out on FD1 or FD2 faults with Damper feedback programmed.

Resolution: 
FD1 is the time to open damper fault (F581) is the F code for setting up the open timer.
FD2 is the time to close damper fault (F582) is the F code for setting up the closed timer
 
F580 is the feedback  input for damper feedback.
F583 is the damper behavior. 0= ignore, 1= freewheel, 2= ramp to stop.
You will have to power cycle to reset this fault code.
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