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Nope. Checked the ground. It's fine.

Before I tell everyone how i solved the problem, I just want You all to know this.
I appreciate Your prompt help with my problem and I hope that I'll get the same response in future if I ever need...

As I've mentioned, VFD isn't connected to BOB or PC in any way.
The only thing VFD has in common with PC and BOB is that they draw electricity from same electric company.
I'm pretty sure my VFD...

- Electricity for the lights in my basement is supplied from diferent switchboard that is on different electrical counter than the current supplied for CNC machine.
- USB cable between PC and BOB is...

Did You contacted biesse service for that? That would be the fastest way to fix this.
When does the error show? You have to be more specific.

I've never said I know all this. Again, assumptions...
There is really no other way to connect the shield of a motor cable to earth therminal on VFD than by putting it between terminal clamps and...

It is amazing how people just assume things about other people that they don't know.
In case mactec54 doesn't know, I know how star ground is implemented and how shielded cable is terminated.
And...

No parallel cable. It's USB from PC to bob. Thanks, I'll look into it.

It's also connected to spindle chases.

What?
The lowest is 10$???
Where is that? I want to move there!!
Mine is 5 $/hour and I work 10 hours a day on a 200 000 $ CNC machine.
I can't even vote for this one. Damn!

Hi everyone.
I'm finishing my CNC machine and I have a problem.
It's a 3 axis engraver with Huanyang VFD, chinese 2.2 kw spindle and DDLMV1EN bob ,stepper motors with those standard chinese drivers...

Hello everyone!
I'm Ted, and I'm from Croatia.
I'm building 3 axis vertical CNC machine.
Will post pictures when I'm done.

Hi everyone.
I'm working in local joinery on a CNC machine bima300 from IMA.
I'm also an instructor with a certificate.
I'm here to learn more about CNC machining and programming.
Also I'm...