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    Can you put an output contactor between the motor and the output of the VFD drive to cycle motor off and on?

    Issue:
    Can you put an output contactor between the motor and the output of the VFD drive to cycle motor off and on?

    Product Line:
    Altivar drive

    Environment:
    All

    Cause:
    Contactor installed on the output of VFD drive.

    Resolution:
    It is not recommended because when the contactor opens while running it can damage the IGBT`s ( output devices ).
    This is not a suitable application for starting and stopping a motor that is running.

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