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IndustryArena Forum > WoodWorking Machines > Commercial CNC Wood Routers > Chinese Machines > Redid almost all electronics on 6040, except spindle/VFD, which isn't working now
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  1. #1
    Join Date
    May 2013
    Posts
    17

    Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    So I changed the steppers to closed loop hybrids, put in limit and home switches, and changed to a computer water cooling system. I also got an AXBB-E controller with UCCNC. All that seems to work just fine so far.

    The parts I kept - the spindle and nowforever VFD, aren't working anymore. I did change the VFD-to-spindle cable to a shielded one. I added the 4th pin (ground) to the spindle and soldered it to the spindle top cap inside. The cable ground is then also attached to earth which is also attached to the VFD ground. Originally the VFD was never earthed.

    The controller sends a 0-10v signal to the AIN1 pin on the VFD. at S24000 it's 9.87v, at S120000, it's 4.97v and so on. The X1 pin is receiving 13v since it's a different common on the controller.

    I see the freq on the VFD display go from 0 to a max of 379.something when I change the S values, but nothing happens with the spindle. I did remove the resistor the VFD originally had between the 12v pin and the AIN1. Putting it back doesn't seem to help.

    All the settings on the VFD are what it used to be on the old setup, which used to display a constant 400 no matter what. Not sure why that's different now.

    I'm looking for any advice on how to troubleshoot this. I'm a total newb.

    Here are some pics of the new setup (I still need to clean the wires up a bit)

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    Do you have a relay to control the VFD's FWD or Run terminal?
    The analog voltage doesn't start the spindle, it just controls the speed.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #3
    Join Date
    May 2013
    Posts
    17

    Re: Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    It should just be the X1 pin, which is the forward run. It's getting 13v. I have it connected exactly as it used to be with the Chinese electronics. Maybe 13v is overvolting it? I'm also not sure why it's not hitting 400 hz at S24000.

    Attached is the old connection, which is the same way it is now.
    Attached Thumbnails Attached Thumbnails 20190314_164750.jpg  

  4. #4
    Join Date
    May 2013
    Posts
    17

    Re: Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    I just noticed in the instructions X1 needs to be shorted to com. I could have sworn I also tried active low in the pin setting with no effect. I'll try that again when I get home, although it's a different common, so not sure if it will go to 0v.

  5. #5
    Join Date
    Mar 2003
    Posts
    35538

    Re: Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    I just noticed in the instructions X1 needs to be shorted to com
    Most people would wire X1 and COM to a relay, and have the AXBB switch the relay.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  6. #6
    Join Date
    May 2013
    Posts
    17

    Re: Redid almost all electronics on 6040, except spindle/VFD, which isn't working now

    Ok, I'll try this relay.

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