After talking about 5 common problems, let me give you a detailed explanation of the wiring diagram of the electric bicycle controller: determine the positive and negative poles of the power supply and the electric door lock wire

First, put the multimeter on the DC gear first, then connect the negative pole (black wire) of the multimeter to the negative pole (ground wire) of the battery, and then use the positive pole (red line) of the multimeter to measure one by one. The voltage of the power supply is high), and the one without voltage is the negative pole. Let me explain here that there are three wires with a power supply, one of which is the electric door lock wire. The characteristics of this wire are: the voltage of the power supply is the same when the key is opened, and there is no voltage when the key is closed.

Second, turn off the key and connect the three wires of the power cord and the electric door lock wire

The thick red wire of the electric bicycle controller is the positive pole, and the thick black wire is the negative pole. After connecting it, turn on the key, and then measure whether the power supply voltage and the voltage of the electric door lock line are normal, and then measure the power supply voltage of the handlebar line at about 5V (red and black lines), and the power supply voltage of the Hall line at about 5V (red and black lines). black line) (don't forget to put the multimeter on the DC file).

Third, each voltage is normally connected to the white learning line

If it is reversed, unplug it and connect it once, and then unplug the learning line after the motor rotates forward. Connect the transfer wire, generally according to the color connection on it. If it is still not possible, the transfer handle may be broken, then unplug the transfer handle cable, and directly connect the red and green wires of the controller transfer handle cable. If the motor rotates normally, it proves that there is something wrong with the handlebar. Change the handlebar.

Fourth, after the motor rotates normally, the brake breaks the wires, Hall wires, instrument wires, etc.

Fifth, how to determine the meaning of each line on the tram

Follow the motor to find 3 phase wires and 5 Hall wires of the motor, remove the handle to find 3 handle wires, and remove the brake handle to find 2 brake wires. Disassemble the battery and you can see "+" the positive pole of the power supply and "-" the negative pole of the power supply. Generally speaking, it is the easiest to understand and the most accurate to find and install according to the bulk.

Sixth, if the motor does not turn normally, the method of testing whether the Hall is good or bad

For live detection on the vehicle, first, connect all the lines and connectors, pull the multimeter to the DC voltage 20V position, first confirm that the controller has 5V power output, and then connect the black test lead to the ground wire of Hall, and the red test lead Connect three signal wires respectively and turn the motor gently by hand while measuring. When the Hall is normal, the multimeter will display the pulse voltage data of 0V~5V. If there is no pulse voltage when measuring a certain Hall, then the Hall It's broken. (This situation can also be detected with a pointer multimeter. If the pointer swings between 0V and 5V, the Hall is good; if the pointer does not swing, the Hall is bad.) This method is the most reliable method, provided that Live operation.

Seventh, connect the instrument line

When you disassemble the meter, you will find that the meter has 2 wires, one is connected to the anti-theft interface and the other is connected to the controller's meter wire.

Eighth, find the transfer line

Remove the handle and you will find that there are only 3 wires on the handle, you can find it by looking at the color, or measure it with a multimeter.

Ninth, connect the brake disconnection wire

When you remove the brake lever, you will find that there are 2 wires on the brake lever (the brake lever is a normally open switch), and you can connect these 2 wires directly to the brake power off of the controller.

Tenth, the installation is complete

After the installation is complete, use the pedal scale to prop up the whole vehicle, connect the controller, insert the learning wires, and then open the electric door lock. At this time, it will enter self-learning. When the rotation is normal, if you find that the motor is running in the opposite direction, adjust it Adjust the speed and turn the handle to change the running direction of the motor, and then open the learning line.

Installation points:

1. The positive and negative poles of the power supply must not be reversed;

2. First connect the power cord, electric door lock wire, handle wire, and motor wire to four groups of wires;

3. Connect the wires and open the electric door lock, turn the handle, if it is reversed, connect the learning wires, it will turn forward, then unplug the learning wires, and connect other wires.

Mingcheng Zhizao is a professional electric vehicle controller manufacturer with good quality products. Our sales mechanism is complete and our after-sales service mechanism is reliable. We have successfully supplied electric vehicle controllers to many domestic and foreign companies. Our controllers are made of high quality materials and have passed strict quality control before delivery. In addition, we also offer customized services to meet the specific needs of our customers.