Quote Originally Posted by JAZZCNC View Post
Most data sheets nearly always quote peak ratings, so if doesn't state RMS always go with peak.



Couple of reason why he'll be getting that speed. If he really is because 2000rpm is high for a stepper.? (Have you checked the machines moving correct distance.? If steps Per is wrong you'll get false reading)

#1 He's only running at 400 Ms so will have more torque but the motors will be running very rough.
# 2 He's running well above 70vdc and close to 80V
I'm running at 68-70v with load from the stepper a couple of volts higher without, the steps are setup right dimensions spot on, 1:1 coupling on all axis, now I turned on 8 microsteps it faults at 20m/min but dialed back to 15m/min and it's very happy and does seems smoother.

I have the cutting speed set to 8m/min seems to make nice parts 2mm cuts, might try it at 10m/min.

Only doing wood if I ever do aluminium I'll dial the speed right back and only cut to the sides on the machine where it's strongest.