Stepper Motor question

[benn0280]

So, first off -- i'm what you'd call a CNC noob. got that outa the way... ok, so i just got my Xylotex driver and Xylotex 425oz steppers hooked up and can move them around with mach3 no problem. Then i set mach3 "steps per" to 8000 (using 1/8 step and 1/2" 2 start, 5 turn per inch acme thread -- please correct me if i'm wrong) once i changed the "steps per", my motors basically start to move, then lock up. until i stop the program, or the g-code changes direction...

Firstly, i want to know... is this damaging any of my motors/driver? are my steps per correct? advice how to fix it? Thanks in advance.

[ger21]

You're not damaging anything, and your steps are correct. Try slowing down your accel and velocity. What are they set at?

[benn0280]

my motor gets stuck at velocities anything greater than 55in/min. weird thing is that only one motor does this. the other two can go 100+ in/min. Thanks for your reply Gerry

Jon

[ger21]

Resonance is a common problem with those motors and the Xylotex. If they are dual shaft motors, here's one solution.

http://www.cnczone.com/forums/showth...639#post256639

[benn0280]

oh, and my accel is set to 4 - the default i think... these are going on a jgro thats in progress... right now, however they are not attached to any screw, so there is no load on them. thanks again.

Jon

[ger21]

You might find that they work much better on the machine.

[benn0280]

Originally Posted by ger21 You might find that they work much better on the machine.

I had suspected that. Well, hopefully this weekend my brother and i will get some quality build time in and i can test it further. thanks Ger for your input.