VFD but it must connect directly to the motor, no contacters.

I wired the VFD to the motor and removed all the wiring, contacters, transformers etc. from the big wiring box and rewired the power feed, coolant pump (new 110V) and lights to 110V.

Mine has the Varispeed head so I use it to control spindle speed and set the VFD to 60Hz.