I bought a turntable where the electronics were damaged. I found out that the damage was caused by connecting a Pioneer turntable intended for the Japanese market (110V) to 230V. Since most of the electronics on the motor are completely destroyed, I would like to use only the coils (there are 4 on the motor, but 2 are connected), so I believe it is a two-phase motor. There are 2 Hall sensors used, which I would replace, as they are likely also defective. Could you advise if it is possible to use a SimpleFOC board to control this motor? Each coil has a resistance of about 27 Ohms. The rotor consists of a single ring of permanent magnets. Should I use the code for a two-phase stepper motor? Thank you for any advice.
Hey @markeye,
Interesting project.
The schematic you’ve drawn makes me think that you’d be able to run the motor as a stepper. It has effectively 2 independent phases and 1 pole pair.
You could try running it in the open loop maybe.
I found in the schematic of another Pioneer turntable, which uses the same motor, that it is a 4-phase motor. I also examined the rotor with the magnet, which contains 7 poles. Therefore, it is a 7-pole, 4-phase motor with two Hall sensors.
Thank you,
M
I’d say that’s 4 phases like a 4 wire stepper.
Regarding the rotor, is it 7 pole pairs as in 14 magnets, or just 7 magnets?