Originally Posted by
Jason3
Hi Pete,
I had a quick scan back through the thread to refresh, but didn't find out what you're intending to use to isolate the PC from the machine?
.
Just as a reminder, if you are using a Desktop or Tower PC, the MB 5v is most likely not going to be isolated from the machine, regardless of any BOB you use.
The MB supply and any mains powered spindle, VFD, SCR DC controller & the MB is going to be referenced to each other through their ground reference connections.
The big question is what is the nature of the path and how is it is being referenced?
This is often forgotten and overlooked by many, and the source of noise problems.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.