Causes

Possible Solutions

The carrier frequency and the resonant frequency of the connected machinery are the same.

  • Adjust C6-02 to C6-05 [Carrier Frequency].

  • Set C6-02 = 1 to 6 [Carrier Frequency Selection = Frequency other than Swing PWM].

    Note:

    If C6-02 = 7 to A [Carrier Frequency Selection = Swing PWM], the drive will not know if the noise comes from the drive or the machine.

The drive output frequency and the resonant frequency of the connected machinery are the same.

  • Adjust d3-01 to d3-04 [Jump Frequency].

  • Put the motor on a rubber pad to decrease vibration.