Brushless motor motor automatic lock screw machine what are the common control unit failure and solution?
Brushless motor motor automatic locking screw machine control unit is to ensure the normal operation of the core part of the equipment, common failures and solutions are as follows:
1, power supply failure
Failure phenomenon
Control unit can not start, the display does not show, all functions are disabled; or intermittent work, sometimes normal and sometimes abnormal.
Failure causes
External power supply is unstable, such as excessive voltage fluctuations, sudden power failure, etc.
Damage to the power supply module inside the control unit, such as aging of filter capacitors, overheating and burning of the power supply chip.
Loose power line connection, poor contact, or broken or short-circuited lines.
Solution
Use a voltage regulator to stabilize the external power supply and ensure that the input voltage is within the range allowed by the control unit.
Test the power supply module, if you find damaged components, such as capacitor bulging, chip burning, etc., replace the corresponding components in time; if it can not be repaired, replace the whole power supply module.
Check the power supply line, re-insert and remove loose connectors, repair broken lines, and eliminate short-circuit faults.
2、Program operation failure
Fault phenomenon
Screw machine running process is chaotic, not according to the preset program execution, such as skipping a step, repeat a step; or program frequently crash, need to restart to recover.
Failure causes
There are loopholes or errors in the control program itself, which may be due to a low software version or logical defects during development.
The control unit is subject to electromagnetic interference, resulting in errors in program operation.
The memory module storing the program is faulty, such as data loss, read/write errors, etc.
Solution
Contact the equipment manufacturer to obtain a new version of the control program and upgrade it to fix known program vulnerabilities.
Add electromagnetic shielding to the control unit, such as a metal shield, and ground it reliably to reduce the effects of electromagnetic interference.
Test and repair the memory module, and if it cannot be repaired, replace it with a new memory module.
3、Signal transmission failure
Failure phenomenon
Poor signal transmission between the control unit and various sensors and actuators leads to inaccurate action of the screw machine. For example, the screw position information detected by the sensors cannot be accurately transmitted to the control unit, or the locking commands issued by the control unit cannot be effectively communicated to the actuator.
Cause of Failure
Damage to the signal transmission line, such as broken cables, loose interfaces, oxidation, etc.
Interference during signal transmission, e.g. strong electromagnetic equipment nearby, signal cable parallel to power line, etc.
The signal input/output interface of the control unit is damaged and cannot receive or send signals normally.
Solution
Check the signal transmission line, replace the damaged cables, re-insert and unplug the loose interfaces, and clean the oxidized connectors.
Reasonable wiring of the signal cable, avoid parallel with the power line, use shielded cable to transmit the signal, and ground the shielding layer.
Detect the signal input and output interfaces of the control unit, if damage is found, replace the interface or repair in time.
4, parameter setting fault
Fault phenomenon
The operating parameters of the screw machine can not be set or saved normally, such as locking torque, speed, feeding time and other parameters after setting automatically restore the default value, or set the parameters can not take effect.
Fault cause
Failure of the parameter storage area of the control unit, which may be caused by damage to the storage chip or loss of data.
Improper operation of parameter setting, such as sudden power failure or misoperation during the setting process.
There is a problem with the processing logic of the control program for parameter setting.
Solution
Check the parameter storage chip and replace it if it is damaged; try to perform data recovery or initialization operation on the storage area.
Strictly follow the operation manual for parameter setting to avoid abnormalities in the setting process.
If it is suspected that the control program problem, contact the manufacturer to debug and optimize the program.
5、Communication fault
Fault phenomenon
If the screwdriver supports communication with other devices (e.g., host computer, PLC, etc.), problems such as communication interruption and data transmission errors may occur.
Failure causes
Communication protocol mismatch, the communication protocol used by the control unit and other devices is inconsistent.
Communication line failure, such as network cable damage, loose serial cable, etc.
Communication interface failure, the communication interface of the control unit or other devices has hardware damage.
Solution
Check and standardize the communication protocol between the control unit and other devices to ensure that both sides use the same protocol for communication.
Check the communication line, replace the damaged cable, and re-plug the loose interface.
Check the communication interface and repair or replace it if it is damaged.
※ If the above ways and means still can not solve the equipment failure, please contact Xinhui Electromechanical Equipment Company Limited technical specialists through the page chat tool to seek help.
