What are the common sensor failures and their solutions for motor automatic rotor test vision all-in-one machine?
Motor automatic rotor test vision machine relies on a variety of sensors to ensure accurate operation, once the failure will affect the test results and production efficiency. Below for you to analyze the common sensor failure and the corresponding solution:
1、Position sensor failure
Failure phenomenon: During the operation of the equipment, it can not accurately obtain the position information of the rotor or moving parts, resulting in abnormal operation. Such as rotor testing, the table can not accurately stop at the specified position, affecting the visual inspection and testing accuracy; the equipment may appear false alarms, suggesting abnormal position, but the actual position does not have a significant deviation.
Reason analysis: the position sensor itself is damaged, such as internal circuit short circuit, disconnection, failure of the sensing element, etc.; the sensor's installation position is shifted, resulting in inaccurate sensing distance; the sensor's connecting wires are loose, broken, resulting in signal transmission interruption or instability; the surrounding environment has a strong electromagnetic interference, which affects the normal work of the sensor.
Solution: the use of professional testing tools, such as multimeter, etc., the position of the sensor test, determine whether it is damaged, if damaged, then timely replacement of the same type of sensor; recalibration of the sensor's installation position, to ensure that the sensing distance in line with the requirements of the equipment, with the aid of precision measuring instruments to assist in the installation; check the connection line, repair the damage, re-insertion and removal of loose connectors to ensure a solid connection; the sensor to take Electromagnetic shielding measures, such as the installation of metal shielding, away from strong electromagnetic interference sources, such as large motors, inverters and other equipment.
2、Pressure sensor failure
Failure phenomenon: In the process of rotor testing, the pressure sensor can not accurately measure the pressure value, the display data is abnormal, such as excessive fluctuations in the value of the value of the display is zero or a fixed value, etc.; equipment control based on the wrong pressure data, which may lead to inaccurate test results, or even damage to the rotor or test equipment.
Reason analysis: the sensitive components of the pressure sensor is subject to physical damage, such as impact by hard objects, resulting in a decline in measurement accuracy; the sensor for a long time in harsh environments, such as high temperature, humidity, corrosive gases environment, so that the sensor performance degradation or damage; the sensor's signal conditioning circuit failures, such as amplifier circuit components are damaged, the failure of the filter capacitor, etc.; the pressure sensor's calibration parameters are lost or incorrect, resulting in Inaccurate measurement data.
Solution: If the pressure sensor sensitive components are damaged, need to replace the sensor; improve the sensor's working environment, such as the installation of protective devices, ventilation and heat dissipation equipment, moisture-proof equipment, etc.; check the signal conditioning circuit, the use of professional instruments to detect the components, the replacement of damaged components; recalibration of the pressure sensor, you can use the standard pressure source for calibration operations, to restore the correct measurement data.
3, photoelectric sensor failure
Failure phenomenon: the photoelectric sensor can not normally detect the presence of rotors or objects, resulting in equipment misjudgment. Such as the rotor into the detection area, the sensor did not send a signal, the device fails to start the corresponding test process; the sensor appears to be triggered incorrectly, in the absence of an object also sends a signal, affecting the normal operation of the device.
Reason analysis: photoelectric sensor light-emitting element or receiving element aging, damage, resulting in the emission of light intensity is weakened or receiving sensitivity is reduced; the sensor's lens surface has dust, oil and other stains, affecting the emission and reception of light; the sensor's detection distance is not set properly, beyond its effective detection range; the sensor's installation angle is unreasonable, resulting in the light can not be accurately aligned.
Solution: replace the aging or damaged light-emitting components, receiving components; use a clean soft cloth and special cleaner to clean the sensor lens; according to the equipment requirements and the actual situation, re-adjust the detection distance of the sensor to ensure that it works within the effective range; adjust the sensor's mounting angle, you can find an excellent angle through multiple tests to ensure that the light can be accurately launched and received.
4、Temperature sensor failure
Failure phenomenon: temperature sensor measurement of the rotor or the key parts of the equipment temperature data is inaccurate, the display temperature and the actual temperature deviation is large; equipment may be triggered by the wrong temperature data overheating protection, resulting in downtime, affecting the production schedule.
Cause analysis: poor contact of the temperature sensor probe, not fully in contact with the measured object, resulting in inaccurate measurement of temperature; the sensor's internal circuit failures, such as changes in resistance value, chip damage, etc.; the sensor is used for a long time, the performance of the performance drift, the measurement accuracy has decreased; the ambient temperature is too high or too low, exceeding the normal operating range of the sensor, affecting the accuracy of the measurement.
Solution: Check the installation of the temperature sensor probe to ensure that it is in close contact with the object to be measured; test the internal circuit of the sensor, replace the damaged components; regular calibration of the temperature sensor to correct the error brought about by the performance drift; provide the temperature sensor with a suitable working environment, such as the installation of thermal insulation or heating devices, so that it works within the normal temperature range.
※ If you still can't solve the problem by the above ways and means, please contact the technical specialists of Xinhui Electromechanical Equipment Co.
