I have a santec bed mill it has a 220/440 3hp 3phase motor. I got a vfd for it to go from single phase to three phase. I think I have all of the settings right but it is not working. Based off my research everyone wires their buttons to the vfd as an input, so I was wondering if I can use the original controls on the machine, and just hook the mills original power cord to the vfd. Or do I need to hook the vfd directly to the motor and wire the buttons to the vfd.