Would there be anything wrong with using a Toggle Switch (i.e. On-On 4PDT) to change between controls sets (built into lathe and remote) like I mentioned?
Note:
- Lathe wouldn't automatically start at the wrong speed when switching because the right start button needs to be pressed.
- Stops buttons wouldn't be switched so either button could be available for emergency stops (i.e. similar to the knee bar on the newer Vicmarc lathes).
- One of the poles on the toggle switch would be used for an indicator lights to signify which control set is currently active. Voltage for the led light would come from the VFD.
Btw, have you seen the conjoined Hensel twins drive a car? Talk about some coordination... One twin presses the gas and brakes while the other uses the turn signals, and both control the steering.
-Karl