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OP1 fault on the ATV212 and ATV21 drives.

Issue:
OP1 fault on the ATV212 and ATV21 drives.
Product Line:
Altivar ATV21 and ATV212 drives.
Environment: 
All
Cause:
Overvoltage during acceleration
Resolution:
Enable catch on the fly, Parameter F301= 3,  Set overvoltage fault operation level F626 to 150%, Increase your ACC time for ramp up.
 
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