What are the common electrical faults and solutions for the fully automatic material receiving machine of brushless motor?
The common electrical faults and solutions for the fully automatic material receiving machine of brushless motor are as follows:
I. Power Supply-related Faults
1. The equipment cannot be powered on and started
Reasons for the Fault
The power plug is loose, has poor contact, or is damaged, resulting in the inability to transmit electrical energy normally.
The power switch is damaged and cannot connect the power circuit.
The fuse is blown. It may be due to a short circuit fault in the circuit, and the excessive current causes the fuse to blow to protect the circuit.
The power cord is open-circuited. It may be because the cable ages and is damaged due to long-term use, or it is pulled by external force and other reasons.
Solutions
Check the power plug to ensure it is firmly inserted into the socket. If the plug is damaged, replace it in a timely manner.
Test the power switch. If the switch is damaged, replace it with a new power switch.
Check the fuse. If it is blown, first check whether there is a short circuit fault in the circuit. After eliminating the fault, replace the fuse with the same specification.
Check the power cord. If an open circuit is found, locate the break point and repair it or replace the power cord.
2. The power indicator light does not light up, but the equipment can operate
Reasons for the Fault
The power indicator light itself is damaged, such as a burned-out bulb.
The connection of the indicator light circuit is loose or open-circuited.
Solutions
Replace the damaged power indicator light.
Check the indicator light circuit, reconnect the loose circuit, and repair the open-circuited part.II. Motor-related Faults
1. The motor does not run
Reasons for the Fault
The motor winding is short-circuited or open-circuited. It may be due to the damage of the winding insulation caused by the motor running overheated for a long time, getting damp, etc.
The motor driver has a fault, such as damage to the power module of the driver, a fault in the control circuit, etc., which makes it unable to provide a normal driving signal for the motor.
The motor control signal is abnormal, such as an incorrect or lost control signal sent by the controller, which may be caused by a wrong controller program, a wiring connection problem, etc.
The motor load is too large. It may be that there are jams, blockages, etc. in the mechanical part of the material receiving machine, resulting in the motor being unable to drive the load normally.
Solutions
Use tools such as a multimeter to detect the resistance value of the motor winding to determine whether there is a short circuit or open circuit. If there is a problem, repair or replace the motor.
Check the motor driver to see if there are obvious signs of damage, such as burned components, short circuits on the circuit board, etc. If necessary, replace the driver.
Check the motor control circuit to ensure a firm connection. At the same time, check the program and parameter settings of the controller and correct them if there are any errors.
Check the mechanical part of the material receiving machine, eliminate problems such as jams and blockages, and reduce the motor load.
2. The motor speed is abnormal
Reasons for the Fault
The parameter settings of the motor driver are wrong, such as improper settings of the speed setting value and the speed regulation range.
The motor feedback signal is abnormal, such as an encoder fault, which causes the driver to be unable to accurately obtain the actual speed of the motor, and thus unable to perform precise speed regulation.
The power supply voltage is unstable. Both too high and too low voltages will affect the motor speed.
Solutions
Reset the parameters of the motor driver to ensure that they match the rated parameters of the motor and the actual working requirements.
Check the working status of the encoder. If it is damaged, replace the encoder in a timely manner.
Use a voltmeter to detect the power supply voltage. If the voltage is unstable, consider using a voltage regulator to stabilize the power supply voltage.
III. Sensor-related Faults
1. The sensor cannot detect the material
Reasons for the Fault
The installation position of the sensor is inappropriate, resulting in the inability to accurately detect the material.
There are contaminants such as dust and oil stains on the surface of the sensor, which affects the detection accuracy of the sensor.
The sensor itself is damaged, such as damage to the light-emitting diode or receiving diode of the photoelectric sensor, damage to the sensing head of the proximity sensor, etc.
The sensor circuit connection is loose or open-circuited, resulting in the inability to transmit the signal normally.
Solutions
Adjust the installation position of the sensor so that it can accurately detect the material.
Clean the surface of the sensor to remove contaminants such as dust and oil stains.
Test the working status of the sensor. If the sensor is damaged, replace it with a sensor of the same model.
Check the sensor circuit, reconnect the loose circuit, and repair the open-circuited part.
2. The sensor makes false detections
Reasons for the Fault
There are interference sources in the surrounding environment, such as strong light and electromagnetic interference, which affect the normal detection of the sensor.
The sensitivity setting of the sensor is too high or too low, resulting in inaccurate detection.
The characteristics of the material do not match the sensor, such as the color and material of the material, which affect the detection effect of the sensor.
Solutions
Take shielding measures, such as installing a light shield and an electromagnetic shielding cover, to reduce the interference from the surrounding environment.
Adjust the sensitivity setting of the sensor so that it can accurately detect the material.
Replace the sensor suitable for the characteristics of the material, or appropriately process the material to improve the detection effect of the sensor.
IV. Controller-related Faults
1. The controller display is abnormal
Reasons for the Fault
The controller display screen is damaged, such as a cracked screen, a fault in the display chip, etc.
The controller program has an error. It may be due to the program being interfered with, incorrect parameter settings, etc., resulting in abnormal program operation.
There is a communication fault between the controller and other devices, such as loose connection of the communication line, mismatch of the communication protocol, etc., resulting in incorrect data transmission and abnormal display.
Solutions
Replace the damaged controller display screen.
Reload the correct controller program, or debug and correct the program.
Check the communication line between the controller and other devices to ensure a firm connection. At the same time, check the communication protocol settings to make them match.
2. The controller cannot control the equipment normally
Reasons for the Fault
The internal components of the controller are damaged, such as damage to the chip, capacitor, etc., resulting in the failure of the control function.
The input and output interfaces of the controller are faulty, and it cannot receive or send control signals normally.
The power supply of the controller is unstable, affecting the normal operation of the controller.
Solutions
Repair the controller or replace the damaged internal components.
Check the input and output interfaces of the controller. If they are damaged, repair or replace the interface modules.
Check the power supply of the controller and use a voltage regulator to ensure the stability of the power supply voltage.
※ If the equipment fault still cannot be solved through the above methods, please contact the technical specialist of Xinhui Electromechanical Equipment Co., Ltd. through the page chat tool for help.