theres a few possible reasons for stalling.
1: the torque curve drops off rapidly at a certain rpm. - this is unlikely to be your issue here though.
2: the gibs are too tight and have have sticky spots. does the machine stall in the same place each time?
3: mach 3 pulse width is incorrect. on my machine, i would get random stalling because the pulses were not correct.
4: your acceleration is set too fast. what is it at? 20-40 is probably where it should be on this mill.
i just set up an NM200 to go 150 ipm, acceleration at 40. it runs like butter. but at 175ipm it would stall beacause the big nema42 motors drop of that quickly. it was obvious because all 3 axes would quit at the same speed, even the Z on linear rails. |