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Thread: Stepper motor spins only CCW when jogging with Mach3

  1. #21
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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    All right everyone, thanks for replies. I will supply both 12V and 5V and mess with more options.

    One problem thought, since my capacitor blew up. I am going to replace it. Does anyone know or can someone take a look at the properties of that capacitor? I am unable to find any info about it on the internet.

    Here are the images:

    Stepper motor spins only CCW when jogging with Mach3-cc04-16-201711-27-54-copy-jpg

    Stepper motor spins only CCW when jogging with Mach3-cc04-16-201711-28-11-jpg



  2. #22
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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    I have the board in my hand, but I can't read anything on that capacitor, because of where it's located. It looks like 220uF, but I'm not sure.
    All 3 capacitors are different, though.

    Gerry

    UCCNC 2017 Screenset
    [URL]http://www.thecncwoodworker.com/2017.html[/URL]

    Mach3 2010 Screenset
    [URL]http://www.thecncwoodworker.com/2010.html[/URL]

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

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


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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    Maybe you'll get lucky and the cap is the only thing that went. I'd be concerned that a chip or something else on the board got fried also. Might be less hassle and just as cheap to just order a couple more.



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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    On my board, it is a 220uF 16volt.



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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    As i know cw and ccw is diferent from step and dir and u need an coverter to make it work like this one http://www.cnczone.com/forums/genera...ir-cw-ccw.html



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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    Hi, long time no see. I've been busy and couldn't get my hands on the project. I'm away from it now, but when I get back I will try what you guys said. In the meantime I have ordered the new (same) BOB so the capacitor isn't a problem anymore.

    Hope this thread isn't a problem for being alive for so long. I still haven't solved my problem, have I?



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    Default Re: Stepper motor spins only CCW when jogging with Mach3



    Look at my testing for single axis TB6560 driver board, it can rotate in both directions smoothly,
    Did you connect a resistance to 5V between driver and controller ?



  8. #28
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    Default Re: Stepper motor spins only CCW when jogging with Mach3

    Hello everyone! Good news! >>> IT WORKS! <<<

    First of all, the cause of the problem was not providing 5V via USB cable, which is used to power BOB's logic. Big thanks to coherent for pointing this out! Kudos to you!

    Second, everything works perfectly now. I keep the same connecting scheme as I posted in picture, except for these:
    1. I have disconnected 12-24V power supply to BOB. It's for spindle and I don't need it right now since I am testing only one axis.
    2. I have added 5V USB supply.
    That's all there is to it!

    Third, thank you everyone for helping me with this problem. It means a lot to me (and hopefully to many other people trying to make a CNC machine) and I will never forget this learning experience. Although the problem was fairly simple, it managed to get overcomplicated simply because of bad documentation, or probably my inability to read it properly.

    Thank you all again!



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Stepper motor spins only CCW when jogging with Mach3

Stepper motor spins only CCW when jogging with Mach3