I have the PP heavy duty gantry with drives both sides. I set Mach 3 to the settings Ron supplied for the motors I have from Tom at CandCNC bladerunner.
If I jog slow or medium speed, the gantry works well. At fast jog, it will seem to bind up and stop losing steps. This also happens at rapid speeds to the start of a cut at the middle of a sheet. This is an intermittent problem. I have removed the drives, cleaned and re-installed the drives. I reset the motors and checked the belts. Everything seem fine there. If I remove the motors, the gantry will glide along the rails nice and smooth. The rack and pinions seem to be in alignment and run well.
I am thinking maybe the acceleration might be too high for the axis or the rapid travel speed. Any suggestions on changing the speeds and where?
Any ideas or suggestions would be appreciated.
Thanks
Gary