The switch I have does have the center off position.I don't reset the controller with the hall effect. I use the hall efect and a magnet epoxied to the spindle as a rpm input to my Shumatec 550 DRO. I still have to turn the speed down and back up to restart the motor.
The DPDT sw sounds o.k. Just check it for getting hot when running. Does the switch have a center off?
Got to run to Knoxville for a while. Be back this afternoon.
Chuck
Have you tried the on-off switch in the white wire to the pot, I seen a guy doing it on you tube and then I heard it again here, to restart at your previous speed setting?
I am new to DRO, I just finished putting the Mtech three axis on my mill and I put the two axis Mtech on my 13 x 40 lathe a few months ago. I do not know their full capabilities yet.
Can the Shumatec do anything with the RPM reading or is it just acting as the display versus a separate display for the rpm. I was thinking about the speed display off the treadmills, if it could be re calibrated to read rpm.