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The pump has stopped flowing a few times already, although i think i have solved that problem now by fixing airleak and raising tank. I would still expect something that relies on external devices...

one last question. Does this motor have any protection against overheating? if not what is the max safe operating temperature so i can buy a digital thermostat.

Ok. I added some lower limits and set No.X paragraph frequency from 50-15hz like manual asks. All parameters are set how manual says now.

No improvement to oscillation problem from software speed...

It's an ebay 2.2kw water cooled spindle. 220v

I just shorted XGND to FWD on VFD to check if it starts, now i'm back to using VFD control panel until relay arrives.

Spindle RPM and the frequency display on VFD oscillates quite noticeably at...

Cheers, i checked min and max pulley speed settings in mach3 and max was set to 240k instead of 24k. AVI is now showing 0-10v correctly.

I also changed parameter 07.08 to 3 so it's finally...

Okay, i see a feature called 'Calibrate Spindle' in mach3. I seem to be able to increase AVI voltage by increasing spindle speed percentage so hopefully that works out. I got it over 7v before
...

thanks, i shorted FWD and XGND which started it, and i connected the other wire like this but it's not showing RPM on mach 3 or adjusting the frequency.

1) +10v from VFD to controller 10V
2) VI1...

Thanks for reply. I couldn't get mach3 to accept that code but i ran some gcode to check voltages.

I'm getting 12v on output side while running gcode but i don't get any voltage between ground and...

Update. Turns out FWD and REV are assigned to output pins 1&2 consecutively.

This is how i think it might be wired. Please can somebody confirm before i fry anything

1) 12v to spindle FWD
...

i found this post that sounds promising. Googled "vfd 13v 10v" and got this. God bless Google

"1) Wire #1 from controller ground to VFD XGND (DC ground)
2) Wire #2 from controller output defined...

I thought i would know how to do this but i can't find any documentation for this 220v spindle. Pinout looks unique

I am using an all in one breakout board/drivers with 3 pins for the spindle.
...