What Causes the Motor Not to Rotate?
1 Answers
Motor failure to rotate is generally caused by blown fuses, accelerator malfunctions, or damaged power switches. The solutions for motor rotation failure are as follows: Check the throttle signal voltage: If the throttle source 5V voltage is normal, check the throttle signal voltage. When rotating the throttle, the signal voltage should change from low to high. If the voltage does not change and remains below 1V, it indicates a throttle fault or a short circuit in the throttle wire. If the voltage is above 1V and changes normally, proceed to check the motor Hall signal. Check the motor Hall signal wires: Inspect each motor Hall signal wire separately. Slowly rotate the motor by hand, and the voltage for each phase should vary between 0 and 5V. If the voltage does not change, the motor Hall sensor is damaged, and the electric vehicle motor or motor Hall components should be replaced. If each phase voltage changes normally and the power supply is functioning correctly, the controller is likely damaged and should be replaced. Use a multimeter to test the controller: Measure the voltage at the controller's power input terminal with a multimeter. The voltage should be greater than 36V. If there is no voltage, inspect the input wires. Check the throttle power supply voltage of the controller; the normal voltage range is 5–6V. If there is no 5V voltage, unplug the throttle socket. If the voltage returns to 5V, the motor Hall components may be short-circuited. If there is still no 5V voltage, the controller is faulty and should be replaced.
