Irregular Spindle Speed

[HipoPapi]

Ok well the chinese spindle is wired Star(380v) so you need to change it to delta. This will cure your speed problem.
Remove the screws and those gold jumpers can be changed around. Set them like the pic.

Regards the Speed changing when code runs then are you 100% sure the code isn't changing the speed.? Other than that then would need to see the XML to make sure spindle is set correctly.

Regards the VFD Speed then unfortunatly it's one or the other. Yes can make speed adjustable from VFD with quick parameter change but you will lose external control via Mach3.

Just one more thought as I am a bit more confused now. Since you have thought the wiring posted was the Chinese spindle wiring although it was the colombo that makes me think they are both wired 380V so that would mean the speed issue lies some other place. Please correct me if I am wrong.

Thanks
BoX

[JAZZCNC]

Just one more thought as I am a bit more confused now. Since you have thought the wiring posted was the Chinese spindle wiring although it was the colombo that makes me think they are both wired 380V so that would mean the speed issue lies some other place. Please correct me if I am wrong.

Thanks
BoX

Yes your thinking is correct. This is why I asked you several posts back to check the Supply voltage. If that pic is the columbo wiring then it's wired Star and 380V so your supply must be 3 phase 380V.
In which case the chinese spindle should work and I'm not going to be able to suggest anything more than have done already ie: check wiring etc and test the 0-10v is working correctly.