Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: mediumSasuage on August 02, 2023, 06:11:00 AM
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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
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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?
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check the steps per rev are not 1024, some are and some are 1000. or 512/500, 256/250