Let the fun begin !!! ???

[JAZZCNC]

Hi sorry I'm a little snowed under with work so been doing some late nights and I'm knackerd when come out of workshop late.

Ok I wasn't sure if the Steps per setting would have any affect but wanted you to check. Obviously it doesn't so forget this now.
Well look at the PWMBase Freq & MinPWM now and see how this affects things. I've still not had time to check this out further but I'll suggest some more things to try.
Only Try one at a time and reset back if it doesn't work before trying next.

First set Pulley back to 0 and 24000. Try using pulley #4 and see what affect this as.?

Next lets try to get 0V @ M5 so set Min base Freq to Zero and check with meter. If it has some affect then also check the voltage @ S12000.

Then try altering PWM base Freq and see what affects going up or down has to voltages. You should see some difference.

I would think playing with the Basefreq along with Pulleys should get you sorted. But again only try one thing at a time.

Unfortunately your at the point where helping from a distance isn't really possible as your down to fine tuning for speeds etc and that can only be done at the machine.