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What causes a OP3 fault on the ATV212 drive?

Issue:
OP3 fault on the Altivar 212 drive

Product Line:
ATV21 ATV212 Altivar 212, Altivar 21 drives

Environment:
All models, All serial numbers

Cause:
OP3 fault is caused by overvoltage during constant speed operation.  This could be caused by abnormal fluctuation of the input voltage, Power networks greater than 200kVA, Power factor correction switching, SCR's switching on the Power network, the load regenerating into the drive or intermittent output phase loss. 

Resolution:
Confirm the motor nameplate information matches settings in the drive.  Confirm that the drive is sized correctly for the load and application.

tYP = 2 (60Hz)
tHr = motor FLA
uLu = motor voltage
F415 = motor FLA
F417 = motor RPM

Set AU1 = 0. 

Check the setting of Pt matches the application. 


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