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General Mach Discussion / Steppers stalling only on activating Feed hold?

« on: March 07, 2014, 11:04:55 AM »

I have two Nema 34 steppers on the x axis (rack and pinion drive), running Mach3. the feedrate is 200 ipm, acceleration is 8. Never stalls at this rate during jogging, machining or rapids. However, on pressing the feed hold button one or both of the motors stall. Also, the motors stall on activating the Stop button. This stalling occurs when it changes direction, not before a direction change. Is there a way to change the feedhold settings to match those during jogging in terms of acceleration?
Thanks for your replies.