Troubleshooting a 36V Goldant motor

[ebrom]

Hi All, I have a 36V Goldant motor that just had a major breakdown. I am using it with ecrazyman controller with 6 fet 3077 210A fet. 24v thumb throttle. 12s lipo 44.4v-50.4v.

Has run fine for me until recently. At the start of a ride, the motor ran for a few seconds, then stopped, only making slight clicking noises. It seems almost as if it is missing one phase of the three phases? I switched the controller and the same noise is made so I believe it is the motor. I have not tested with another throttle as I need to find my spares or order another one.

How can I test/isolate the problem?

 

[Deleted member 4366]

Check the hall sensors first, if it has them. With the controller connected to the motor and switched on, check that you have 5v between the red and the black, then measure between the black and each other colour whilst rotating the wheel backwards slowly. The voltage should switch from zero to 5v several times per rotation. .

Changing controllers doesn't necessarily prove anything. Those E crazyman controllers often have different phase sequence to other ones. You need one with automatic phase and hall sequence detection to test if the motor is working, just by connecting it.

On Your Ecrazyman controller, measure the resistance between each phase wire and the positive, and then again to the negative. They should be something like 14k, but the main thing is that each three readings should be the same.

 

[ebrom]

Thanks d8veh,
I will test the controller. I am sensorless so do not have hall sensors to test. I believe I did set the phase sequence correctly on the spare. That is, I am aware that the green, yellow, blue wire colors can be different sequences from one controller to the next. When I got the controllers, I set them both up to run correctly on the bike, the colors happen to be the same sequence.