How do I know if the wire of the EV controller is a signal cable?

Green line. In the yellow, green and blue three-phase wire docking (the same color docking) that connects the controller and the motor, in the docking hall wire, the plug of the red, black, yellow, green and blue five thin wires on the controller is docked to the corresponding interface on the motor line.

The positive and negative poles connected to the controller are connected to the positive electrode stage of the battery wire, red is the positive electrode, and black is the negative electrode. Some electric vehicles have a brown or other color red line, if you can't distinguish the positive and negative lines and you can't see the connection at the end of the battery wire, use a multimeter.

Take a measurement. After connecting the positive and negative poles, connect the electric gate wires as well.

The communication signal line on the electric vehicle controller is generally a thin white wire, the connector is very small, and it is a single wire. It's not a speed line, it's not a gauge line.

It's just a computer line, isn't it? It is output to the motor of one of the 3 thick wires of the green pass of the other, if there is no direct connection to the green wire

If you are talking about the Hall signal line on the controller, it is a plug with 5 wires, the top is 5V voltage, the red is the positive pole and the black is the negative pole, and the other 3 are the Hall signal wires.

1. Observe whether the connecting wires on the controller are burned together. If the instrument wire is adhered to the positive wire of the controller, it will be electrified.

2. If there is no adhesion, disconnect the instrument line to see if the instrument indication is lowered, and if it is lowered, the controller is broken, and if it is not down, the instrument line is connected from the controller to the instrument line, or the instrument is damaged.

3. Disconnect the instrument line, and the instrument is reset to normal, indicating that the controller is broken. This problem is usually caused by a breakdown of one of the controller's MOS tubes. The maintenance method is generally to replace the controller, and the MOS tube can be replaced if there is technology.

To put it simply, the maintenance method for this problem is to find the controller, disconnect the instrument cable, the instrument is normal, and replace the controller; Abnormal, repair line.

Here's how it works:

1. Find the positive and negative poles of the power supply and the lock wire of the electric door

The positive electrode refers to the end of the power supply with a higher potential (potential); The negative electrode is the lower end of the power supply (potential). Therefore, we can use a multimeter to find the positive and negative poles, first hit the DC gear, and see which potential is higher and lower to distinguish it.

2. Connect the power cord and the electric door lock wire

The thick black line is the negative pole of the battery, the thick red line is the positive pole of the battery, and there is a thin red line next to these two wires, which is the electric door lock wire. The correct way is to find the lock wire and lock the two positive and negative pole wires directly. When wiring, carefully check whether there are other positive wires in the line from the car body to the controller that are controlled by the lock.

3. Docking white learning line:

If the reversal line has been reversed, pull the motor forward and then unplug the learning line.

4. How to test Hall's good or bad:

Hall faces itself (stamp side), the pins are down, from left to right: positive (switch Hall 4 5V to 24V, linear Hall 5V), negative, input (signal), positive and output resistors (1 to 10K). At the negative pole and the output of an indirect light-emitting diode, the voltage is measured with a multimeter, and the high level is equal to the low level of the supply voltage is approximately equal to zero.

After receiving power, use a magnet to move closer or farther away from Hall to see if the LED emits light changes. If there is a change, it is good, and if there is no change, it is bad.

5. Connect the instrument line and find the handle line

6. Connect the brake and disconnect the wire

The brake cable is usually a single purple one, and there is also a purple and black one. Some electric vehicle controllers have two brake wires behind the wire, as long as the two brake wires are put together, the car will be powered off, and the front brake lever also has two wires to figure out, and the back controller of the wires are connected, you just need to connect the back wires to the front brake wires for a long time.

Related introductions

An electric motor is a rotating electric machine that converts electrical energy into mechanical energy, which mainly consists of an electromagnet winding or distributed stator winding to generate a magnetic field and a rotating armature or rotor.

Under the action of the rotating magnetic field of the stator winding, an electric current passes through the armature squirrel cage aluminum frame and is rotated by the magnetic field. Some of these types of machines can be used as electric motors or generators. It is a machine that converts electrical energy into mechanical energy.

Usually the work part of the motor is rotated, and this kind of motor is called a rotor motor; There are also those that do linear motion, which are called linear motors.

It depends on whether you are chartered or a simple car? The simple car is relatively simple, as long as you find the power supply terminal to separate the positive and negative poles, you can find the power supply from the controller and connect it, as for whether there is a headlight circuit in the instrument, the horn circuit has to see the line diagram. If it is a chartered car, it is complicated, there is a power indication circuit and a computer circuit, and there are many terminals, so there is no way to explain it in detail!

It is recommended to find an after-sales agent who sells the car to help you repair!

The instrument line is the phase line of the motor.

I don't know about this, sorry.

Positive and negative poles: 2 poles, coarse red, coarse black, the positive and negative electrodes are all on the same plug, and the fine red is the lock wire.

Motor wires: 3, coarse yellow, coarse green, coarse blue.

Hall wire: 5, red, black, yellow, green, blue (fine).

The distinction is as follows: Generally, the three-speed plug of the key is the same as the hall plug of the motor, three wires in a row, two wires in a row One of the wires in the two-wire row is a common wire, that is, a negative wire.

The other is the control line, and the three-wire row is the three-gear display line. Use the multimeter to find the common line first and then find the one with positive voltage is the display line, after separating, these two wires are connected to the light-emitting diode or the display wire is connected to the display gear of the LCD instrument, and the remaining three are shorted with the common wire.

If the light-emitting diode or liquid crystal gear is extinguished, it means that this line is the control line, and the remaining two wires are also display lines, which are connected to these three display lines according to the speed of the vehicle.

The speed gauge has two wires, one black ground wire is connected to the negative pole wire, and the other is connected to the instrument wire of the controller or to any phase wire of the motor.

Why is there only one instrument line for the electric vehicle controller and how does it work1A wire that the computer leads out of the controller.

Turn the handlebar, and the two wires of the brown wire and the black wire on the negative pole of the controller will have a voltage of 0 27V and a 48V car.

2.If there is no voltage change, the controller is broken or the wire is off.

3.There is only one instrument line for the electric vehicle controller, and the ground wire is shared.

4.The instrument line is used to display the speed, and the faster the speed, the higher the voltage of the instrument line.

5.When braking, connect the high level and the positive terminal of the battery, and the controller will stop working.

The meter actually calculates the speed according to the voltage.

Generally, there are only 2 follow-lines.

One is connected to the controller and the other is connected to the negative electrode.

Other line voltmeters or something are controlled by the head of the car.

Such as turning. The light line on the left is connected in parallel with the left turning lights before and after.

The same goes for the others.

Electric Vehicle Controller Line:

1. Power cord 3ay, three wires, red, red, black.

2. The motor line, yellow, green, blue, generally connected to the corresponding color line, if it cannot rotate normally, it needs to be debugged with 36-phase wire connection.

3. Hall signal 6ay: generally the corresponding line corresponding to the street, red, black, yellow, green, and blue.

4. Variable speed line 3ay, three, red, black and green.

5. Brake line 2ay, two. Black, purple.

6. The cruising line is 2ay, which is quite a turning line, red and black.

7. The speed limit is generally white or blue alone, and the two lines are connected, which will limit a certain speed.

The electric motor control system of electric vehicles should choose a more suitable microprocessor system according to the complexity of its control algorithm. The simpler single-chip controller is selected, the complex DSP controller can be used, and the latest motor drive special chip can meet the motor control needs of some auxiliary systems. For electric vehicle motor controllers, it is generally more complex and suitable to use DSP processors.

A +5V power supply cable (red line) supplies power to the handlebars.

One is grounded (black wire) to the negative pole of the controller.

One is the speed regulation signal (blue), when the handle is screwed from small to maximum, the voltage changes from low to high, and the motor speed changes from slow to fast.

Hall wire is easier to connect, are 6pin plastic shell 5 wires, the main thing is to adjust the phase after connecting, the motor line yellow, blue and green three thick wires, first according to the color of the motor wire docking, turn it and then see if it is a reversal or abnormal noise, and then the color cross-connection try.

until it adjusts to a positive rotation.

Dear, hello cruising line words, two lines. One is the signal line, the other is the ground wire, the specific situation needs to know the controller model, etc., it is recommended that you go to the local after-sales point for consultation. 1. Power cord:

3 (fixed, bullet (plug spring)) 1, thick red, wire diameter power supply) 2, thick black, wire diameter power supply) 3, fine red, behind the wire diameter electric door) 2, motor phase wire: 3 (fixed, round jack, wire diameter coarse yellow (a) 5, thick blue (b) 6, coarse green (c) 3, motor Hall: 5 (fixed, bullet (plug spring) wire diameter fine red (+5V) 8, fine black (-) 9, fine yellow (x) 10, fine blue (Y) 11, fine green (Z) four, turn:

3 (fixed, bullet shell (insert), wire diameter fine red (+5V) 13, fine black (-) 14, fine green (turn signal 1 Fifth, learning line: 2 white wires, docking to play a learning role. Sixth, the instrument speed line:

1 root, purple or brown. 7. Brakes: 1 or 2.