What is this motor?
T Chap
Posts: 4,198
Bipolar stepper?
I finally got around to taking apart one motor that I was suggested to be frozen up on my adaptive headlight. The main goal was to figure out how to point the light back level as it was low. Now that I see how it works in the assembly I am trying to see if the motor is dead as I was suggested by a dealer(guessing). It apparently has two windings. 4 pins. 1-3 have a few ohms. 2-4 have a few ohms. The driver module when powered off tests at 40k ohms on 1-3 and the same on 2-4( disconnected from motor). When connected the driver shows the same low ohms letting me know the motor is defininitly connected. I have replaced the motor driver. No luck. Maybe it is bad connections somewhere. But is this a bipolar stepper? The Magnet spins affixed to a bearing. It has threads that push out a threaded rod with a plastic ball that pushes the light. One pic shows me holding the magnet. I’d like to find a way to test.
I finally got around to taking apart one motor that I was suggested to be frozen up on my adaptive headlight. The main goal was to figure out how to point the light back level as it was low. Now that I see how it works in the assembly I am trying to see if the motor is dead as I was suggested by a dealer(guessing). It apparently has two windings. 4 pins. 1-3 have a few ohms. 2-4 have a few ohms. The driver module when powered off tests at 40k ohms on 1-3 and the same on 2-4( disconnected from motor). When connected the driver shows the same low ohms letting me know the motor is defininitly connected. I have replaced the motor driver. No luck. Maybe it is bad connections somewhere. But is this a bipolar stepper? The Magnet spins affixed to a bearing. It has threads that push out a threaded rod with a plastic ball that pushes the light. One pic shows me holding the magnet. I’d like to find a way to test.
Comments
-Phil
Agreed. Now that you have it out make sure the armature turns easily and the screw moves back and forth. Based on the resistance readings the motor coils are ok, although it might be a good idea to compare the readings to those of the working motor. If the resistance readings are close the next step would be to connect the non working motor to the driver of the working one and see if it works. If not the motor is bad, if so the other driver/control signal is not working.