Please, can someone help me understand what I’m looking at?
I set out to reverse the coil pairs on my rotary and was confronted with a very strange surprise. My 2 phase stepper motor only has three wires coming out of it.
I scratch my head and search everywhere trying to figure out the right way to reverse the direction / wiring.
I’ve applied a volt meter to the pins. I’ve read resistance. I’ve read voltage (while turning the chuck). No matter what two pins I measure, values are always the same.
I figured if the coils were in series… I’d get half / double reading depending on the pins and then I’d be able to determine how they were wired. Nope.
Hank. That is EXACTLY what I have convinced myself of as well (especially considering that my Y stepper motor is 3 phase and the rotary borrows that same driver - a Yako YKD3505M 3 Phase Stepper Driver). But then I am hit with the only specifications I can find for this motor:
Well that’s interesting. If it was 2-phase with the 2 windings tied together, then one would expect to find one combination of wires with double the resistance of the other 2.
It’s also interesting to note that the tag on the side of the motor in that photo says “0.3A-4A” and the text below says “0.4A - 2A” so there’s already reason to wonder what other info may be incorrect.
Just for fun, what was the resistance you got between each pair?
Well, I can’t remember. However none of that matters now. I just swapped position of two of the wires on the connector and tested it. It works exactly as expected, and now I don’t have to mirror my image in LB when using the rotary.
?
