Clay L wrote:
Unless you can tell exactly when the steps have reached their full in or out extension you will draw a lot of current when they reach the stops. I suppose you could rig a couple of micro switches at the stops to interrupt the current. A diode in series with each micro switch would also be needed so that the opened switch would not be bypassed by the closed one.
i have read posts by other people that have done what you are talking about and they didn't mention using micro switches and diodes so maybe that isn't a problem.
If it's like ours the motor has a thermal switch inside of it, that's what cuts power to the motor when it hits the limit. The controller senses the lack of current flow and shuts the power off. Now leaving the switch on for an extended period could cause a problem, the thermal switch will cool, the motor will try to turn and the thermal switch will open again. This cycle will continue until the power is switched off.
A DPDT momentary switch would be best. Let go when the steps reach their limit, you can't leave the switch in an on position.