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IndustryArena Forum > CNC Electronics > Spindles / VFD > VFD A2-8022 wire connection with Bsmce04u-pp board
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  1. #1
    Join Date
    Oct 2022
    Posts
    1

    VFD A2-8022 wire connection with Bsmce04u-pp board

    Hello I built a homemade CNC, I can run the spindle from the VFD inverter, now I would like to connect it to the usb board.
    Does anyone know which pin I need to connect?
    Hello I built a homemade CNC, I can run the spindle from the VFD inverter, now I would like to connect it to the usb board.
    Does anyone know which pin I need to connect?
    Thank you very much

  2. #2
    Join Date
    Jan 2005
    Posts
    15362

    Re: VFD A2-8022 wire connection with Bsmce04u-pp board

    Quote Originally Posted by Rex12 View Post
    Hello I built a homemade CNC, I can run the spindle from the VFD inverter, now I would like to connect it to the usb board.
    Does anyone know which pin I need to connect?
    Hello I built a homemade CNC, I can run the spindle from the VFD inverter, now I would like to connect it to the usb board.
    Does anyone know which pin I need to connect?
    Thank you very much
    Do you have the VFD PDF Manual that you can post
    Mactec54

  3. #3
    Join Date
    Aug 2023
    Posts
    2

    Question Re: VFD A2-8022 wire connection with Bsmce04u-pp board

    Hi,
    I have same problem...or two problems...I think.
    This is what I have :
    https://eur.vevor.com/spindle-motor-...p_010384570403
    But is AIR cooled not water cooled.
    and this is user`s guide:
    https://www.et.byu.edu/~sorensen/A2%20VFD%20Manual.pdf
    and my controller card is this :
    https://studylib.net/doc/25734527/bi...verted-wjv-2.2

    First problem is that I cannot get spindle controled by mach3 trough controller card (bitsensor) no matter what I tried. Now the spindle is controled by VFD panel buttons.

    Second problem is that although I managed to run spindle (from VFD panel buttons), after 30-40 minutes of running is geting very hot (cannot keep fingers on spindle for more that 5 seconds (I don`t have a thermometer...)
    Is normal that air cooled spindle to run that hot ?...or how hotter this kind of spindle will be when is running.
    In spindle connection manual the connection plug is wrongly drawn. I use a multimeter to see which is motor coil and I get 3 pins with continuity between them and the forth pin is free without any connection (not ground, I tried to measure if is connexion between this and motor case but is not).
    I think the settings of that VFD is the problem but not shure.
    I use this spindle to carve styrofoam (polystyrene)
    Please help.
    Last edited by ionapostol; 08-07-2023 at 07:50 PM.

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