Maintenance
Solution: replace the controller.
2. Malfunction cause: the motor is damaged; Such as turn-to-turn short circuit of the motor winding, large interference of Hall signal output,
etc. .
Solution: this kind of fault is difficult to be measured, detected and processed by multimeter, so replacement method can be used to
replace the new motor to see if the problem still exists, and if the problem is solved, the motor is faulty.
3. Fault cause: the mismatch between the controller and the motor Hall will also cause the motor noise;
Solution: replace the controller.
V.Fault: When riding on a steep hill or under heavy load, twist the throttle to the maximum position to activate the electric
motor. Sometimes, you may feel the motor pushing forward, but the bike does not move. After a few seconds, the power
fades away. You need to release and twist the throttle again, but the same issue occurs repeatedly.
Fault cause: This phenomenon is often called "locked-rotor" in electric vehicles. When starting, the load is very large, but the motor does not
rotate, so the controller will not produce commutation action. Large current will pass through the same set of MOS tubes on the upper and
lower bridges of the controller and the same winding of the motor, which will easily burn down the controller and the motor for a long time. In
order to protect the controller and the motor, the motor drive output must be stopped in a safe time period, which is the "locked-rotor
protection" of the controller.
Solution: in case of the above situation, it is necessary to reduce the load of the electric vehicle or wait for the electric vehicle to
restart at a place with a small slope.
Tips: do not let low-power electric vehicles run for a long time under heavy load (heavy load or climbing a steep slope), so as not to
affect the service life of the motor or controller.
VI. Fault: when the electric vehicle starts, sometimes it needs help.
1. Fault cause: controller fault;
Solution: replace the controller.
2. Fault cause: poor contact of motor phase line;
Solution: reconnect the motor phase line.
VII. Fault: While riding, the motorcycle will walk for a moment and stop for a moment
1. Fault cause: poor contact of power cord, handle cable, motor phase cable and Hall cable;
Solution: check the connection of each node to ensure that the contact parts are firmly contacted without poor contact.
2. Fault cause: low battery voltage;
Solution: check the battery voltage and replenish it in time.
VIII. Fault: If you keep the throttle twisted while riding, the brake will not cut off the power supply to the motor.
1.Fault cause: the brake switch is damaged;
Solution: test and replace the brake switch (or brake handle).
2.Fault cause: the brake switch circuit is not connected or falls off;
Solution: check the circuit and eliminate corresponding faults.
3.Fault cause: the brake input circuit inside the controller is broken;
. 31 .
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