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    How to troubleshoot an Altivar Process Drive with an Input Phase Fault

    Troubleshoot an Altivar Process Drive with an Input Phase Fault (PHF)

    Product Line:
    Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

    All serial numbers for Altivar Process Drive


    • Loss of one phase on the input side of the drive

    Probable cause:
    • Drive incorrectly supplied or a tripped fused.
    • One phase missing.
    • 3-phase drive used on a single-phase supply mains.
    • Unbalanced load.
    • Check the power connection and the fuses.
    • Use a 3-phase supply mains.
    • Disable the detected error by [Input phase loss] IPL = [No] nO if single phase supply mains or DC
      bus supply is used for programming only
    The Process drives are not currently available to work with 1 phase input 3 phase output. 

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