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

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

    Product Line:
    ATV12

    Environment:
    All serial numbers 

    Cause:
    Drive shuts down

    Resolution:
    • Check the drive settings. (nCr, ITh, CLI)
    OPF1 1 output phase loss
    • Loss of one phase at drive output
    • Check the connections from the drive to the motor
    • In case of using downstream contactor, check the connections, cable and contactor, continuity on the contactor

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