Hi all I have posted previously about changing out parts from a minor burnt out Epilog to run on a Ruida 6445 controller. X axis is good to go but my Y axis has drives both sides. I have machined the lead screws to fitted 2 closed loop stepper motors but now I am not sure on the wiring to the controller … I have wired both in the conventional way(piggy backed the encoders) then connected them both to the step and dir and they sort of worked,ie would just jog by tapping the controller. (It is very difficult to change to 1 motor and belts) If I leave the encoder unplugged on one motor all works but I’m afraid 1 side will get out of step…all comments greatly appreciated
Does Ruida have a controller that has 2 Y axis control and will talk to lightburn… I cant see which one will.
Cheers
That cannot work properly.
The “closed loop” part means the shaft encoders control their motors to position the shaft correctly. Because the
motors are on opposite ends of the same shaft, they will fight each other all the way.
Ordinary stepper motors will work fine, because they have no feedback and don’t care about slight mismatches in angular position.
Hi thanks for your reply, I don’t have both motors on the same shaft, I have 1 on the left axis shaft and the other on the right axis shaft both operating in the correct rotation.
Different arrangement, same problem: when one motor changes the other motor’s position, they’ll fight to the death.
Hmm that’s what I was afraid of… so as much as I don’t want to do it I think I have only 2 options
1 Convert to belt drive
2 Different controller that will allow for dual Y axis
That will make no difference, because the problem lies in having the two closed-loop controllers fight each other for the proper position.
Another problem: unless the X axis also has an identical stepper, the mismatched response times will cause poor results.
Previous discussions have more information:
https://forum.lightburnsoftware.com/search?q=%22closed%20loop%22
Thanks and I will go belt I think.