First I did email support yesterday, but I am seeing if someone might have a clever idea as I would like to finish the project still this weekend.
I had not used my CNC for a couple months, started up seemingly normal. I went to test the spindle at 10k RPM and it did turn on but was like 8K RPM, so then I pushed it to 24K and the highest it got was 17K but was fluctuating between 13k-17k up and down.
I reseated the cables, same thing. I then updated carbide motion, same thing. I then power cycled it and it got worse! Now I can’t even get it to turn on at all. When running the Spindle Warmup macro, the VFD shows 75ish on the display, then it jumps a bit higher when the Macro speeds up, but it never turns on.
I tried unplugging and reseating all the connections, checking grounds, leaving it completely unplugged overnight, and today, it continues it’s decline where now it only shows 45rpm on the VFD when asking for 8000
I saw in another thread looking at the voltage the VFD is receiving, it reads at 24.2 v, which I think is correct.
I had a similar problem a year ago. Two of the solder joints on the H-20 plug had broke and were barely making contact, I assume it was from moving up and down and not being properly attached to anything. After resoldering them I haven’t had a problem.
Well, I got it off, didn’t realized it also unscrewed.
Generally, I think the connections look pretty good. I unscrewed the receiving end from the Spindle, its connections looked good too. Maybe its loose in the VFD end?
Try cleaning up the connectors, they look awful dirty. Using a product “corrosion block” or similar will provide better conductivity thru the circuit. It’s possible you may have a VFD board failing or it could be a connector in the spindle itself.
