mini mill spindle switch between Mach & pot
Hello, (I posted this in the bench top area but here seems more logical) I have my X2 mini mill spindle under Mach control now (via a Gecko G540) and I want to add a switch so I can have manual(pot) / off / Mach control. got this On-OFF-ON SPDT.
I have the 30-10006 version.
I've seen similar setups and would think this should work. I have the line from the pot wiper going to terminal 3, from my G540 VFD signal to terminal 1, and terminal 2 is connected to P2 on the motor control board.
But the behavior is odd so I must not be understanding something. When I have the switch ON for terminals 3-2, the pot controls the spindle like I would expect. At this point, my G540 is off while I test. Then, when I switch to OFF and click the spindle POT on but leave it at low, the spindle goes to full speed and the pot is ineffective. When I switch to ON for terminals 2-1 - which should be Mach control - I also get full speed when I click the pot to on and low (again, the G540 is off while I test so I would expect the spindle to be stopped) and the pot is ineffective. According to the switch's circuit diagram, this switch should work. I've tested Mach control through the G540. I don't want to turn on the G540 to test it until I have the manual pot working like I would expect. Anyone have any ideas on what I'm missing?
cheers,
Michael
Reelsmith, Angling Historian, and Author of "The Reelsmith's Primer"
www.EclecticAngler.com | www.ReelLinesPress.com