All the questions about electric cars
Controller fault (brush) (2) Troubleshooting: speed control, if normal, indicating that the controller is normal, you should check the speed control, and the ground. Disconnect the speed control, the car still does not stop, then the controller is damaged, replace the controller. If a power supply wheel will turn, increasing speed is very fast, commonly known as "speed", the majority of the turn of the ground contact is caused by bad cycle. Therefore, the key to check the turn to the ground. 8, instrument panel no power display, motor operation is normal (1) fault reason: instrument positive and negative lead wire, no voltage, lead or connector short circuit. Instrument damage. (2) Troubleshooting: use the multimeter DC 50V files, detect positive and negative voltage instrument. If the voltage is normal, the instrument is damaged. Without voltage, wires or connectors are broken open, and cables and connectors are checked. 9, the instrument voltage shows normal, speed display abnormal, motor operation is normal (1) failure reason: instrument damage. Speed signal line (black / white) short circuit. The controller has no speed display. (2) Troubleshooting: brush and brushless 48V: using a multimeter voltage blocking detection speed signal line and a power supply cathode (48V brushless speed signal detection and negative) between the two potential with the motor speed, the voltage varies from low to high (36V models have 0 ~ 36V change, 48V brush 0 the change of 48V ~ 48V brushless, it varies from 0 to 25V). If there is no change, check whether the speed signal line plug is normal or not Is there a short circuit? If the voltage change is normal, it belongs to the instrument fault, for example, the speed display is low. The speed adjustment potentiometer can be adjusted to the normal by the screwdriver. 36V brushless: first check the instrument panel and controller speed line (black / white), the connection line is short circuited
The common faults and troubleshooting of electric vehicles, 1 meter display is normal, the motor does not turn the handle (1) causes damage to the judgment to the governor and judge the motor damage damage judgment controller damage (2) trouble shooting out the brakes to socket (normally open type brake handle). For example, when the motor is running, the brake handle shall be replaced by the brake handle. Turn the voltage of the source 5V normal, detect the signal voltage, turn to turn, the signal voltage should be from 0.8 to 4.2V, from low to high. If there is no change in voltage and less than 1V, the switch is turned or the circuit is short circuited. If the voltage is greater than 1V and the change is normal, check the motor Holzer signal (yellow, green and blue lines). If the three-phase Holzer signal line voltage is all 5V, and good contact, then the motor Holzer damage, should replace the motor or motor Holzer components. Third, the motor Holzer signal line is detected, and the motor is rotated slowly by hand. Each phase voltage should change between 0 and 5V. If there is no change in the voltage, the motor is damaged by Holzer, and the motor or motor Holzer component should be replaced. If the voltage of each phase is changed normally and the power supply is normal, the controller is damaged and the controller is replaced. Use multimeter to check the input voltage of controller power supply, the voltage should be greater than 36V (battery sufficient electricity), if there is no voltage, the input line should be checked. Check the controller to turn the power supply voltage (then turn red, black line), the normal voltage is 5 ~ 6V, if no 5V voltage, turn off voltage socket, recovery of 5V, may be Holzer motor short circuit, if there is no 5V voltage for controller failure, should replace the controller
