atomarc
Diamond
- Joined
- Mar 16, 2009
- Location
- Eureka, CA
I have a Rockwell 12" sanding disc powered by a 1.5 HP, 230v single phase motor. When its running and you shut it off, as the RPM's wind down and it comes to the centrifugal switch threshold, you hear the switch 'click' and something happens inside the motor and it give a momentary shudder. Because the machine is housed in a floor mounted sheet metal stand, it give a noticeable 'rattle' as all the tin shakes.
Not being very smart..is this some kind of back EMF kind of thing, not even knowing what the heck that means. I find it strange as there is no power applied when this happens, it's only coasting to a stop.
Stuart
Not being very smart..is this some kind of back EMF kind of thing, not even knowing what the heck that means. I find it strange as there is no power applied when this happens, it's only coasting to a stop.
Stuart