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PROBLEM SOLVED!
I just had to connect to spindle to ground as well... Thank you so much for your help I don't know how long it would have taken me to figure this out by myself... Really really...

No it doesn't do it when the spindle is not running!

So the ground wasn't connected to the connector plug that plugs into the spindle. I opened up the spindle housing and the fourth plug where the...

Hi!
Yesterday I wired the shield of the spindle cable correctly but it didn't change anything. Then I separated the spindle cable from all the others and ran it separately to the spindle and the...

Update:
The spindle cable is shielded but it's not properly connected to the ground of the spindle and not at all to the ground of the vfd! I'll fix it tomorrow, hopefully that's my solution ...

ok right now i have the control box of the machine open in front of me and the usb cable ist just the power input of the breakout board... the computer is connected to the board via db-25 cable. i...

Hi!
So first of all I'm using single phase 230V (:
The last time I looked into the control box there was a usb cable curled up in loops and bound together in there... At the time it didn't come up...

Thank you! After a sleepless night of research I came to the same conclusion haha
The first thing I will do is separate the cable of the spindle from all the others, because right now it is running...

Hi there!
A few days ago I bought my first CNC machine! (:
It is a big F3000 from cnc1 from the year 2005. The deal was so good that I couldn't say no haha
Today I set everything up and tested the...