Motor Hall is bad (***3 only), the motor does not turn or turn weakly or appear strange noise (click), this is the appearance.
Judge the motor hall has not burned out method:
1, first of all, will be the motor phase line and hall line and the controller connected; and then to the controller power supply, the voltage will be adjusted to the DC +20V multimeter black pen and the negative line connected to the hall with the red pen to measure the motor motor in turn another three hall line SA, SB, SC voltage, in the measurement of each hall line needs to be Slightly rotate the motor to see if the multimeter voltage in the range of 0 ~ 5V change, there is proof that the Hall components are intact, and vice versa, it shows that the Hall components have been damaged.
Hall connecting line and the motor within the Hall damage is this phenomenon, you can first find the motor and the controller of the five-wire plug, which is yellow, green and blue three colors, in turn, unplugging the rotation of the power handle to see if the phenomenon is the same as the original, if you unplug one of them and the original fault is the same, then it is the motor Hall is bad.
2, open the power supply, find the Hall socket red, black line, measuring 5V normal, respectively, measuring the voltage between yellow, green, blue and black line, at this time, hand-turned wheels, see if they are every time in a fixed position of 5V or 0V, and the three lines appeared in the 5V position are 120 degrees apart, so that you can judge whether the Hall is normal.
Extended information:
The Hall effect is a basic method of studying the properties of semiconductor materials. Hall coefficients determined by Hall effect experiments can determine the type of conductivity, carrier concentration and carrier mobility of semiconductor materials and other important parameters
Hall principle of operation
There is a Hall semiconductor sheet in the magnetic field, and a constant current I passes through it from A to B. A constant current I passes through it from A to B, and a constant current I passes through the sheet. Under the action of the Lorentz force, the electron flow of I is deflected to one side as it passes through the Hall semiconductor, causing a potential difference in the CD direction of the sheet, which is known as the Hall voltage.
The Hall voltage varies with the strength of the magnetic field, the stronger the magnetic field, the higher the voltage, the weaker the magnetic field, the lower the voltage, the Hall voltage value is very small, usually only a few millivolts, but by the amplifier in the integrated circuit amplifier, you can make the voltage amplified enough to output a stronger signal.
To make the Hall IC work as a sensor, you need to mechanically change the magnetic induction. The method shown below uses a rotating impeller as a switch to control the magnetic flux, and when the impeller blades are in the air gap between the magnet and the Hall integrated circuit, the magnetic field is deflected away from the integrated piece and the Hall voltage disappears.
In this way, the Hall integrated circuit of the output voltage change, can indicate a certain position of the impeller drive shaft, the use of this principle of operation, the Hall integrated circuit piece can be used in the role of ignition timing sensor. Hall effect sensor belongs to the passive sensor, it has to have an external power supply in order to work, this feature makes it possible to detect low speed operation.
Reference:
Baidu Encyclopedia ? Hall sensors