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What can cause an OLF1 fault on the Altiivar 12 drive?

Published date: 23 September 2019

Issue: 
What can cause an OLF1 fault on the Altiivar 12 drive?  

Product Line:
ATV12

Environment:
All serial numbers 

Cause:
1 output phase loss

Resolution:
• Check the drive settings. (nCr, ITh, CLI)
• Loss of one phase at drive output
• Check the connections from the drive to the motor
• In case of using downstream contactor, check the right connection, cable and contactor

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