What are the common sensor failures and their solutions in motor motor rotor automatic core punching machine?
The common sensor failures and their solutions in the motor motor rotor automatic core punching machine are as follows:
1、motor speed sensor failure:
Failure phenomenon: the sensor does not work, the signal is unstable or no signal.
Solution: Make sure the power supply of the sensor is normal, check whether the power connection, interface and voltage are in accordance with the specifications. Use an oscilloscope or multimeter to measure the output signal and check whether there is a pulse signal output. If there is no signal, the sensor may be damaged or poorly connected.
2、Sensor signal output problem:
Fault phenomenon: signal loss or interference.
Solution: Check whether the connecting wire from the sensor to the controller is firm, broken or short-circuited. Replace the connection line if necessary.
3、Improper sensor position:
Failure phenomenon: unstable or inaccurate signal.
Solution: Confirm whether the installation position is correct, and the distance between the rotor or magnet in the specified range, to avoid contact with the rotor shaft.
4、Signal interference problems:
Fault phenomenon: signal waveform distortion.
Solution: Check whether there is electromagnetic interference (EMI), ensure and signal line away from high-voltage cables and other possible sources of interference.
5、 rotor and magnet problems:
Failure phenomenon: inaccurate speed.
Solution: Confirm whether there is a mark on the rotor or the magnet is working properly, make sure there is no wear or fall off.
6、Servo motor temperature sensor failure:
Fault phenomenon: temperature sensor signal abnormality, disconnection, short circuit, aging, high ambient temperature, pollution or damage.
Solution: Check the temperature sensor connection line to ensure that there is no broken or short circuit; for aging sensors, need to be replaced; for high ambient temperatures, need to improve the working conditions of the sensor; for contaminated or damaged sensors, need to be cleaned or replaced.
7、 Hall sensor failure:
Failure phenomenon: Once the Hall position sensor failure, the position signal it contains is then lost, which may lead to motor speed disorders, and even cause greater damage to the electric drive system.
Solution: Acquire the rotor position information fed back by the Hall sensor in real time, and select an appropriate drive voltage vector to be applied to the drive bridge arm. If the fault is not detected, troubleshooting of the control system is required to ensure that the motor can maintain its original steering and speed.
The above are the common sensor faults and their solutions in the motor motor rotor automatic core punching machine. For different fault phenomena, corresponding inspection and maintenance measures should be taken to ensure the normal operation and productivity of the equipment.
※: If through the above ways and means still can not solve the equipment failure, please contact Xinhui Electromechanical Equipment Co., Ltd. technical specialists through the page chat tool to seek help.
Case:
A factory's motor motor rotor automatic core punching machine has a sensor failure during the production process, resulting in the machine can not work normally. The fault manifested itself as unstable sensor signals, which affected the precise control and productivity of the machine.
Fault phenomenon:
1, the sensor signal output is unstable, sometimes and sometimes.
2、Abnormal vibration and noise during the operation of the machine.
3, the decline in production efficiency, product quality problems occur frequently.
Failure analysis:
Through the observation and analysis of the fault phenomenon, the technicians found that the instability of the sensor signal may be due to the following reasons:
The sensor itself is damaged or aged.
Problems with the sensor connection line, such as poor contact or broken line.
The sensor is subject to electromagnetic interference, resulting in signal distortion.
Solution:
1, check the status of the sensor:
First, the technician checked the sensor, including the power supply, the connection line and the working status of the sensor itself. Make sure that the power supply of the sensor is normal and there is no short circuit.
2, line check and repair:
The connection lines from the sensor to the controller were carefully checked, and it was found that some of the lines were worn out and had poor contact due to prolonged use. The technicians repaired and replaced these lines to ensure the stability of signal transmission.
3, electromagnetic interference processing:
Considering the possible problem of electromagnetic interference, the technicians evaluated the electromagnetic environment around the sensor and took corresponding shielding measures, such as the use of shielded wires and increased grounding measures to reduce the impact of interference on the sensor signal.
4, sensor replacement:
After eliminating the problems of wiring and electromagnetic interference, if the sensor signal is still unstable, the technician decides to replace the sensor. After the replacement, the sensor signal returns to normal, the machine runs stably, and the production efficiency and product quality are significantly improved.
Result: Through the implementation of the above solutions, the sensor failure was effectively solved and the automatic core punching machine resumed normal operation. The production efficiency and product quality of the factory were guaranteed, and the economic loss caused by the failure was reduced.
Summarize: This case shows that when facing a sensor failure in a motor motor rotor automatic core punching machine, through systematic fault analysis and targeted solutions, the problem can be solved effectively and production can be resumed. It also emphasizes the importance of regular maintenance and inspection to prevent such failures.
