What are the common sensor failures and their solutions for series excitation motor motor stator press end plate machine?
What are the common sensor failures and their solutions for series excitation motor motor stator press end plate machine?
1、Pressure sensor failure
Failure phenomenon:
Pressure display abnormality: the pressure value output from the pressure sensor does not match with the actual pressure, and it may display too high or too low a pressure value, resulting in the operator not being able to accurately determine the working status of the press end plate machine.
Large fluctuation of pressure data: the pressure data is unstable and fluctuates greatly, which makes the pressure control of the press end plate inaccurate and affects the quality of press fitting of the end plate.
No pressure signal output: the sensor does not output pressure signal at all, so the control system of the press end plate machine can not get the pressure information, and thus can not carry out normal pressure control.
Solution:
Check the power supply and line: Make sure the power supply of the pressure sensor is normal, and check whether the connection line is loose, broken or short-circuited. If there is any problem, repair or replace the damaged wiring and reconnect it firmly.
Calibrate the sensor: According to the calibration procedure of the pressure sensor, use the standard pressure source to calibrate it and adjust the calibration parameters so that the output pressure value matches the actual pressure.
Cleaning and maintenance: Clean the probe and interface of the pressure sensor regularly to prevent dust, oil and other impurities from affecting the measurement accuracy. At the same time, check the sealing of the sensor to ensure that it is not disturbed by external environmental factors.
Replacement of the sensor: If the pressure sensor still does not work properly after inspection and calibration, the internal components may be damaged and need to be replaced with a new pressure sensor.
2, position sensor failure
Fault phenomenon:
Inaccurate position detection: the position sensor is unable to accurately measure the position of the stator or the press head, resulting in deviation of the end plate press fitting position, affecting product quality.
Loss of position signal: the sensor intermittently or completely lose the position signal output, so that the control system of the press end plate machine can not know the exact position of the components, which may lead to uncontrolled press fitting process.
False Alarm: The position sensor may incorrectly send out an alarm signal of abnormal position, even if the part is in normal position, which will lead to equipment shutdown and affect production efficiency.
Solution:
Check installation and fixing: Make sure the position sensor is installed in the correct position and firmly mounted. If there is any looseness or displacement, readjust and fix the sensor to ensure that it can accurately detect the position change.
Detection of sensor components: Use professional tools to detect whether the components of the position sensor are damaged, such as the light-emitting diode and photodiode of the photoelectric sensor, the inductor coil of the proximity switch and so on. If damaged, replace the corresponding components or the entire sensor.
Check signal interference: the surrounding electromagnetic interference may affect the position sensor signal transmission, check whether there are large motors, frequency converters and other sources of interference around the equipment. If there is interference, take shielding, grounding and other anti-interference measures, or adjust the layout of the equipment, away from the source of interference.
Cleaning and lubrication: For some mechanical structure of the position sensor, such as limit switches, etc., you need to regularly clean and lubricate its mechanical parts, to prevent the accumulation of dust or mechanical hysteresis resulting in inaccurate position detection.
3、Temperature sensor failure
Fault phenomenon:
Temperature display error: the temperature sensor shows a large difference between the temperature value and the actual temperature, which may lead to misjudgment of the operating temperature of the equipment, affecting the normal operation and service life of the equipment 13.
Temperature alarm abnormality: the temperature sensor sends out a temperature alarm signal too early or too late, so that the operator can not detect the overheating or overcooling of the equipment in a timely manner, which may cause damage to the equipment.
No temperature signal: the sensor does not output temperature signal, the control system can not monitor the temperature condition of the equipment, there are hidden dangers.
Solution:
Check the sensor connection: check whether the connection plug of the temperature sensor is loose or has poor contact, if there is any problem, re-plug and unplug the plug to ensure a reliable connection.
Measure resistance or voltage: Depending on the type of temperature sensor, use a multimeter to measure its resistance value or output voltage value and compare it with the value during normal operation. If the value is abnormal, the sensor may be damaged and needs to be replaced.
Check environmental factors: Ensure that the ambient temperature around the temperature sensor is within its normal operating range to avoid the sensor being directly affected by high or low temperatures. Also, check whether the heat dissipation or insulation measures of the sensor are good, and make improvements if necessary.
Calibrate or replace the sensor: If the temperature sensor has a large measurement error, try calibrating it according to the manufacturer's instructions. If the calibration is still inaccurate, the temperature sensor needs to be replaced with a new one.
4、Flow sensor failure
Fault phenomenon:
Inaccurate flow rate display: the flow rate value output by the flow sensor does not match the actual flow rate, which may lead to incorrect judgment of the flow rate of hydraulic oil or cooling water, affecting the normal operation of the equipment.
Flow signal instability: flow data fluctuate frequently, making it difficult for the control system to regulate based on accurate flow information, which may cause the equipment to work unstably.
No flow signal: The sensor is unable to output a flow signal, and the control system is unable to monitor the fluid flow situation, which may result in equipment damage due to lack of adequate cooling or lubrication.
Solution:
Check the piping connection: Check whether the connection between the flow sensor and the piping is tight and there is no leakage. If there are leaks, repair the leaks and make sure the connection is secure to ensure accurate flow measurement.
Clean the sensor: Clean the impurities, dirt and scale inside the flow sensor regularly to prevent them from blocking the measurement channel and affecting the normal transmission of the flow signal. Cleaning can be done with appropriate cleaning agents or tools, but care should be taken to avoid damaging the sensor.
Check the sensor impeller or probe: for impeller type flow sensor, check whether the impeller is damaged, stuck or badly worn; for ultrasonic, electromagnetic and other types of flow sensors, check whether the probe is dirty, corroded or damaged. If there is any problem, replace the impeller or probe in time.
Calibration and Adjustment: According to the calibration method of the flow sensor, use the standard flow meter to calibrate it and adjust the relevant parameters to make the flow measurement value accurate and reliable. If the sensor can not be calibrated to the normal range, consider replacing the flow sensor with a new one.
※ If 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.
