What are the common control unit failures and solutions for brushless motor motor automatic stator press end plate machine?
The common faults and solutions of the control unit of brushless motor motor automatic stator press end plate machine are as follows:
1、Controller failure
Failure performance: the equipment can not start, sudden stop during operation, or motor speed, pressure and other parameters are not controlled.
Failure causes: the controller's internal electronic components are damaged, such as chips, capacitors, resistors, etc.; the controller's program error or loss; external interference caused by the controller works abnormally, such as electromagnetic interference, power supply fluctuations and so on.
Solution: Check the controller's internal electronic components, if damaged, replace the appropriate components; re-download or update the controller program; shielding of the controller, such as the use of metal shell shielding electromagnetic interference, while installing power filters to stabilize the power input.
2, drive circuit failure
Failure performance: abnormal motor start, such as unable to start, start abnormal noise; motor operation is unstable, large fluctuations in speed or vibration.
Failure causes: power switching components (such as MOSFET, IGBT, etc.) is damaged; drive circuit capacitance, inductance and other components fail; control signal transmission line breaks, shorts or poor contact.
Solution: Use a multimeter, oscilloscope and other tools to detect the working status of the power switching components, replace the damaged components; check the capacitors, inductors and other components, if damaged, replace them in a timely manner; check the control signal transmission lines, repair breaks, short-circuit problems, to ensure that the connection is firm.
3、Sensor interface circuit failure
Failure performance: the device can not accurately detect the pressure, position, speed and other parameters, resulting in inaccurate position of the pressure end plate, unstable pressure control and other issues.
Failure causes: sensor interface circuit chip damage; interface circuit of the solder joints loose, false welding; sensor and interface circuit between the connection line failure.
Solution: Check the chip of the sensor interface circuit, replace the chip if it is damaged; re-weld the loose, false welding joints; check the connection line, repair or replace the damaged line.
4, communication failure
Failure to perform: the control unit and other equipment (such as the host computer, touch screen, etc.) can not be normal communication between the data transmission error or interruption .
Failure causes: communication interface damage, such as RS - 232, RS - 485, USB and other interfaces; communication line problems, such as circuit breakers, short-circuit; communication protocol settings are wrong.
Solution: Check the communication interface, repair or replace it if it is damaged; check the communication line to ensure that the line is connected properly; reset the communication protocol to ensure that the protocol is consistent with other devices.
5、Power failure
Failure to perform: the control unit can not be normal power supply, resulting in equipment can not start; unstable power supply voltage, affecting the normal work of the control unit .
Failure causes: power module damage, such as transformers, rectifiers, voltage regulators and other components failures; power line breaks, short circuits or poor contact; external power supply is unstable.
Solution: Check the components of the power supply module and replace the damaged components; check the power supply line, repair the breaks and shorts, and make sure that the connection is firm; use the voltage regulator and other equipment to stabilize the external power supply.
※ If the above ways and means still can not solve the equipment failure, please contact Xinhui Electromechanical Equipment Co., Ltd. through the page chat tool to seek help.
