[Al_The_Man]

They don't usually go bad as far as my experience has been, and they are not always a cure-all.
If you have been adding devices, you may not have observed grounding and bonding, motor frame etc.
i.e. ensure motor frame is earth bonded.
Is the VFD supplied from a different source to the Mach3 etc?
Al.

[Chris D]

They don't usually go bad as far as my experience has been, and they are not always a cure-all.
If you have been adding devices, you may not have observed grounding and bonding, motor frame etc.
i.e. ensure motor frame is earth bonded.
Is the VFD supplied from a different source to the Mach3 etc?
Al.

Hi Al The Man,

The VFD is 220 single phase and is powered independently of the rest of the machine which is powered with 120. However, the VFD is in the same metal box (enclosure) as all the other electronics EXCEPT the stuff that I have been adding which is outside the box.

Thanks for chiming in!

Chris