Quote Originally Posted by cncuser1 View Post
dazp: I bought a software licence from UCCNC after sending them my UC100 info, so I assume the UC100 is original.
The PSU is 48V/7.3A
The steppers are 270 Oz/In.(NEMA 23), inductance of 2.8mH.
I was running at 12 In/min with accel at .5in/min^2, which I think are very slow for an X2.
I also had this problem cutting air, no forces at the tool ( but of course I first saw the problem in my work)

When the machine was running I could push against axis movement with almost all my strength and the motors would not stall!

I am not an expert so maybe there is a possibility that the PSU is not working properly or not powerful enough? How could I verify this?
Just add an EMI Power Filter if you think there is any noise causing your problem UC100 do have problems with noise, add some ferrite cores at each end of the USB cable if you don't have it will also help do you have a VFD Drive running your spindle this too needs a EMI Power Filter close to the input power supply to the VFD Drive