Hello all, I am new to this forum.
I use a stepper for a work rotation spindle. I normally turn the work at about 350 rpm.
I am having trouble understanding the setup for this. I don't think what I have is working properly.
The velocity, by the manual, is rev's per second, which would mean I should set mine to 12.5. (750 rpm / 60 seconds) when I do this my stepper moves really slow when commanded to 60 rpm. If I bump it up to 750 for rev's per minute I get much faster speed, but not 60 rpm. If I continue to increase it the motor speed continues to go up, but if I increase it substantially, the motor tries to overspeed and stalls.
I would expect that the velocity would set a cap, and as long as I was under the cap, then my motor speed would be a function of the set rpm and the steps per unit for my motor and driver. If this is true, the changing the velocity would not affect the spindle speed unless i was commanding a speed in excess of the current velocity setting.
I'm hoping someone has been through this already.
Royce Bunnell
www.obcues.com