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  1. CheEng123

    Intermittent Vibration in motor connect to VFD

    I have a VFD connected to a small motor (5 HP). The motor operates fine when its not connected to the VFD, but when it operates connected to the VFD (and with no load) it intermittently vibrates and it has a frame-to-ground voltage of about 50 Volts. What could be the problem, and how do I fix it?

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