Micro electric vehicle motor

Product introduction: Rated voltage: DC60V Maximum speed: 5000rpm Insulation level: H-class Working system: S9 Rated power: 2.8KW Rated torque: 11Nm Protection level: IP55

1. Wiring of the motor: The four outgoing cables of the motor are marked as follows: A1- the first end of the armature winding, A2- the end of the armature winding, D1 (D3) - the first end of the series excitation winding, D2 (D4) - the end of the series excitation winding. Connect D2 to A1, apply voltage between D1 and A2, and the motor can rotate. If you want to switch back to either D1, D2 or A1, A2, you can achieve it.

2. There are four inspection windows at the commutator end of the motor for observing and maintaining the commutator and replacing the brushes.

3. The minimum allowable insulation resistance of the motor is (250V megohmmeter): 0.5M Ω for motors below 45 volts and 1 M Ω for motors between 45-100V.

4. If necessary, clean the small grooves between the commutator segments and the carbon powder on the commutator surface.

5. The motor is not allowed to start at high speed idle.

6. Regularly open the hundred page window to check if the reversing part and electric brush are normal.

(1) The electric vehicle instrument display is normal, but the motor does not rotate. The reason for the fault is

① Damage assessment of brake handle

② Judgment of damage to the speed control handle

③ Motor damage assessment

④ Controller damaged

① Remove the brake lever socket (normally open brake lever). If the motor is running, it is a brake lever malfunction and the brake lever should be replaced.

② The 5V voltage of the handle source is normal. Check the handle signal voltage and turn the handle. The signal voltage should change from low to high within 0.8-4.2V. If there is no change in voltage and it is less than 1V, it is a fault in the handle or a short circuit in the handle wire. If the voltage is greater than 1V and changes normally, detect the motor Hall signal (yellow, green, blue lines). If the voltage of all three-phase Hall signal lines is 5V and the contact is good, the motor Hall is damaged and the motor or motor Hall element should be replaced.

③ Detect the motor Hall signal lines separately, slowly rotate the motor by hand, and the voltage of each phase should vary between 0-5V. If there is no change in voltage, it is a damaged motor Hall, and the electric vehicle motor or motor Hall element should be replaced. If the voltage transformation of each phase is normal and the power supply is normal, the controller is damaged and needs to be replaced.

④ Use a multimeter to check the voltage at the power input terminal of the controller. The voltage should be greater than 36V (when the battery is fully charged). If there is no voltage, check the input line. Check the power supply voltage of the controller handle (red and black wires connected to the handle). The normal voltage is 5-6V. If there is no 5V voltage, unplug the handle socket and restore the voltage to 5V. It may be a short circuit in the motor Hall element. If there is still no 5V voltage, it is a controller fault and the controller should be replaced.

⑤ Firstly, check whether there is a short circuit between the speed control handle and the Hall switch of the electric vehicle motor. Generally, it is more likely to cause a short circuit in the joint after rain and moisture. Therefore, attention should be paid to waterproof the handle joint. If the controller is damaged and replaced with a new controller, first check whether the handle and motor Hall switch are short circuited? Otherwise, it will cause continuous damage to the replacement controller!

⑥ Or if the motor does not rotate, focus on checking the motor Hall switch and handle signal. If the controller housing is very hot when powered on, it is usually due to a short circuit in the power tube inside the controller, and the power should be cut off immediately.