Is it possible to somehow wire this spindle inverter up to Mach3?
Currently I need to turn on the spindle by pressing the blue button on the inverter then press cycle start, I'd like to use Mach to start the spindle, control the rpm and stop the spindle.....is it possible?
Easy, find the manual for it. See how to program the I/O lines to do what you want and wala. The I/O lines usually take 0-10 volts and 4-20 mA. Or put up manual i'll look at it. You can make it control the speed also.
Does it only have the Network plug in it?
Most vfd's i've seen also have i/o lines
The network plug is for RS-485/232 serial com. Using that it will get compliated. Did you open up the front cover of the vfd to see if there are any other connectors?
There you go! Just get the manual and it will tell you exactly how to set the settings so the i/o lines do what you want. With out a manual it will be very hard.
EDIT:
You would use one to turn it on anf off and to vary the speed that depends on what the manual says.
It looks like terminal 6,7,8 are for speed control with a external POT.