Stepper Motor Wiring

[ravihotwok]

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

[Zeeflyboy]

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

[john swift]

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

[Desertboy]

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.

[ravihotwok]

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/

[Clive S]

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

[ravihotwok]

hello Clive mate,
yes now that I have been doing a bit of readying screened seems to be the preferred cable to reduce interference or something. Im trying to also find a cable with the same colours as my existing cable (red, blue, green and yellow)