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    My external device is making noise when installed next to an Altivar Process Drive. What could be the cause?

    Issue:
    My external device is making noise when installed next to an Altivar Process Drive. What could be the cause?

    Product Line:
    Altivar Process Drive

    Environment:
    All serial numbers for Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

    Cause:
    Related to noise issues

    Resolution:
    Noise is typically not generated by the drive but in some cases here are a few things check:
    [Complete settings] [Motor parameters] [Switching frequency]
    - Switching Frequency [SFr] (Increasing may reduce noise but increase heat generated by the drive)
    - Noise Reduction [nrd] 

    NOTE: In the event of excessive temperature rise, the drive automatically reduces the switching frequency
    and reset it once the temperature returns to normal.
    In case of high-speed motor, it is advised to increase the PWM frequency [Switching frequency] SFr at
    8, 12 kHz or 16 kHz


    - Check for possible electrical interference from nearby devices
    - Check installation cables
      Recommend the use of proper VFD or shielded cables in separate conduits. Refer to Installation Manual for Guide Lines.
     

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