PREMIUM E-MOBILITY
YD-EM279
12
2.1.3.3 Connector interface definition
Connector Pin color function Pin color function
1 black GND 4 blue Hall signal
2 / / 5 green Hall signal
3 red Power + 6 Yellow Hall signal
2.1.3.4 Motor fault maintenance determination method
Function definition: the motor is a device that converts electrical energy into mechanical energy and
controls the vehicle speed with the controller. Common faults: motor non - rotation (no reaction when
starting), abnormal sound, motor locked (stuck), no load.
2.1.3.5 Fault diagnosis and troubleshooting steps
Motor non - rotation: trun on power lock and rotate the handle. The motor has no response
Fault diagnosis and troubleshooting steps:
Motor non - rotation: trun on power lock and rotate the handle. The motor has no response
(1) Motor Hall check:
Measure the Hall plug-in voltage, normal: red line 5V or so turn the motor, Hall voltage is 0 or 4V-5V
(2) Motor phase winding check:
To disconnect first, any short two phases, rotating the motor will have a sense of obstruction as normal
(3) Connecting wire and connector inspection:
Disconnect the power lock for inspection in
power - off status.
Connector appearance: no dirt, damage,
fracture, no dirt or oxidation in the internal
insert
Conductor appearance: conductor insulated
leather is free of damage and fracture.
Abnormal
Repair or replacement
Normal
Judge OK
Abnormal sound: trun on power lock, rotate the motor without load, and listen to whether there is ab-
normal sound.
(1) Bearing and oil seal inspection:
Failure of oil seal after long - term use, ab-
normal sound in the damaged bearing and
internal foreign bodies of the motor.
Abnormal
Repair or replacement
Normal
Judge OK
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