Hello,

I am currently using closed loop oriental motors and drivers on my CNC machine. It has been having troubles with accuracy. Recently I checked the distance travelled vs the distance commanded and it was out by 3.15 mm over 240 mm. I used the wizard and recalibrated the counts/unit. Then, it was still out by 3.15 mm over 240 mm (also out by 1.575 mm over 120 mm so I know that it scales.)

Basically, I heard that using closed loop motors can cause similar problems and wondered if anyone has experienced something similar?

Also if I was to disable the encoders, will that cause further problems? EDIT: is it even possible to disable the encoders?

Many thanks,
Dan

Are the motors and/or machine new?  If yes then it should be the supplier's responsibility.  Which wizard did you use, in in-built Mac one?  What is the steps/rev of the motors/encoders?  I very much doubt if the drivers would work without the encoders.  Are they servos or closed loop steppers?

check the steps per rev are not 1024, some are and some are 1000. or 512/500, 256/250