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  1. Hello,

    I am having to rewire my stepper motors, the motors themselves have 4 wires:

    red
    yellow
    blue
    green


    Are these all the same on each motor? Im just not sure which pins to wire them too on the control box you see
    Enthusiastic with CNC stuff but a proper novice so be gentle
    My build blog:
    Chinese 3020t Build

  2. #2
    not always the same I'm afraid. I've had to switch single pairs of wires around before.

    Do you have a model number on the stepper so you could google search a manual?

  3. Manual? christ chance would be a fine think lol.

    Motors have this labelled on them:

    Anchuan
    57HD0401-15SB
    1.8 2OA N1606

    Will it do any damage to the circuitry in the control box or the stepper motor if I just try trial and error ? or would it be impossible to work out?

    Cheers
    Enthusiastic with CNC stuff but a proper novice so be gentle
    My build blog:
    Chinese 3020t Build

  4. #4
    Do you own a multimeter?

    You just need to match your pairs really then polarity can be trial and error... see this guide here if you need help with how to do it:

    http://42bots.com/tutorials/stepper-...wiring-how-to/

  5. Mate that is very very helpful. Im just trying to sort some 4 core cable out from somewhere then I will get investigating.

    Cheers pal
    Enthusiastic with CNC stuff but a proper novice so be gentle
    My build blog:
    Chinese 3020t Build

  6. #6
    No problem.

    Just actually found this which is perhaps a slightly clearer explanation (especially regarding direction) and gives some other techniques if you lack a multimeter... though I'm not sure I would trust the complete trial and error one with expensive drivers/motors, but that's just my paranoia probably!

    http://reprap.org/wiki/Stepper_wiring

  7. you need to use a multimeter ( or a simple battery & bulb continuity tester )to confirm which two wires goes to each motor winding

    if you find you have 3 ohms or so between the red & yellow wires connect them to A+ and A- on your driver

    you should then find you that you have 3 ohms or so between the
    blue & green wires which you should connect them to B+ and B- on the stepper driver

    not all stepper drivers have the required fault protection to survive any connection between the A & B terminals

    if you find the motor runs the wrong way you can either change it in the controllers software - eg mach 3 changing the direction pin from active high to active low
    or
    reversing the wires on one winding
    eg
    changing from
    red to A+ and yellow to A-
    to
    red to A- and yellow to A+

    John
    Last edited by john swift; 14-07-2017 at 10:34 PM.

  8. #8
    Take any 2 wires from the 4 and cross them together and try and turn the motor shaft. When you feel resistance you have a matched pair. (The stepper's are working as a generator)

    Then wire 2 pairs next to each other in the 4 pin connector.

    Try it if the motor's run the wrong way either swap the wires around or change the setting in the firmware to invert axis.
    Last edited by Desertboy; 15-07-2017 at 10:33 AM.

  9. The Following User Says Thank You to Desertboy For This Useful Post:


  10. thanks very much, very helpful, also is this cable ok to use for my wiring:
    http://uk.rs-online.com/web/p/multic...cable/6604037/
    Enthusiastic with CNC stuff but a proper novice so be gentle
    My build blog:
    Chinese 3020t Build

  11. #10
    Quote Originally Posted by ravihotwok View Post
    thanks very much, very helpful, also is this cable ok to use for my wiring:
    http://uk.rs-online.com/web/p/multic...cable/6604037/
    I would go for a screened cable like 4 core CY. https://quickbit.co.uk/Cable/CY-Cabl...-0-75mm-4-core
    ..Clive
    The more you know, The better you know, How little you know

  12. The Following User Says Thank You to Clive S For This Useful Post:


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