So I have a g540 rev3 and im running mach3. I have a 400w brushless spindle (400W 48V Brushless Spindle Motor Kit 55mm Mount Bracket Speed Driver Controller | eBay).
The g540 and spindle each have their own power supply. Right now I control the spindle using the pot that came with it but I'd like to connect the spindle driver to the g540 so it can be controlled through mach3. I'm having trouble figuring out how this thing should be wired. I know the g540 uses pins 7, 8 and 9 for VFD output and since the pot on the spindle driver only uses 3 wires I thought it should be simple enough but every time I think I've figured it out I come across something else that makes me doubt myself. I've tried a few setups with no success and I'm nervous to keep messing around because I've read several warnings saying to make sure you don't mix up the wires or I can damage the g540. Anyone know the right way to wire this thing?
Attachment 249406