Quote Originally Posted by Mogal View Post
OKAY!!
I'm up and running!! Woot woot!!

But things are not all doubt woot atm lol.

Seems I have VFD issues as the spindle fluctuates speed.

Spindle Specs: 2.2kw, 400Hz, 10A

The VFD outputs 9.98v

If I set the spindle to 12,000rpm, the return control voltage is 5.82v
Giving roughly 16,000rpm, but it fluctuates between 16-18,000rpm.

Any way to correct that? From everything I've found, seems it's the VFD itself?

https://youtu.be/ZaCGqST-Mbg
No, it is not the VFD Drive that is causing this problem.

You don't have a return voltage of 5.85v, you should have a range from 0-10v from your control at 12,000 RPM it should be around 5v, so your control is where that is coming from not the VFD Drive, you have to change settings in your spindle control settings at your computer to correct this