I burn wood and salvaged an old 1/20 hp 1550 rpm two speed GE single phase motor (5KSM59CS12K6AS if anyone can find more info, curious what speeds are). I'm trying to make a digital fan controller that will kick onto low as stove heats up, high while hot, and then step back down.
I found some pretty slick (from my limited knowledge of chinese) dual relay controllers Inkbird ITC-2000 that has 10A hot/cold and an alarm relay. I'm not sure that it shuts off the temperature relay when the alarm relay is powered. Ie low and high would be simultaneously powered.
What I'm wondering is how exactly is the speed decided on this motor (three wires)? Right now I'm running the stove the stove on wire nuts choosing which coil/speed to power, but the other day I powered the black AND red wire and nothing blew up and the speed remained unchanged on high. I'm just looking for a some sort of confirmation that I won't burn up the motor or some knowledgeable person telling me I'll eventually burn it up as motor is fighting itself.
Thanks in advance