Issue:
Cause of 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

Released for: Schneider Electric United Arab Emirates