Hi all,

I actually have 2 hopefully easy basic questions. I have an older 4x4 Avid CNC and I am upgrading to a new VFD spindle. I am struggling badly to find a wiring diagram (if you know where I can get one PLS let me know). I have an older ethernet smooth stepper motion controller with the C10 breakout boards.
Q1, Since this is only 5v must I use a relay for the ON signal because the VFD has a 24v signal out from the MI1 back to DOM OR is there a relay in the C10 board that I am not aware of that can handle this?

Q2, Why can I never get the PWM reference voltage in Mach3 to change as it is always on a 5v signal. I believe I have all the correct settings in Mach but I am obviously missing one somewhere. I put a couple of quick snips to see in case someone had a thought