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  1. #1
    Hi for everyone
    after big boom on the first VFD.
    I'm trying to marry the New vfd with same characteristics ( 220 v / 380v 2.2kw CHINT) and the two spindles with no support no information no data sheet....
    according to mr google... It's :
    2 pole
    and I have set the Motor Stator Impedance to 6 homs.
    Everything went well
    But i noticed two things
    1) the display shows negative values
    2)strange sounds like an old radio
    PS I am a mechanic so electricity is a bit difficult for me.
    it is a machine for smoothing the edges of wooden plates.
    it's my brother's machine...i appreciate your help and sorry for my bad English

    Envoyé de mon A1601 en utilisant Tapatalk

  2. When a VFD displays negative values, it often indicates a reverse rotation direction. Reversing the direction is usually a simple adjustment in the VFD's settings.
    Now, let's address the strange old radio-like sounds. These peculiar noises can be attributed to electrical noise interference. When a VFD operates, it generates harmonics and electromagnetic interference, which can manifest as audible sounds resembling static from an old radio. Some VFDs have built-in motor filters that can be enabled to reduce noise. Check if your CHINT VFD has this feature and activate it if available.

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