Series excitation motor motor stator automatic slotting paper machine what are the common electrical faults and solutions?
I. Sensor failure
l Failure phenomenon
The slot paper insertion position is inaccurate. Because the sensor can not accurately detect the position of the stator slot, resulting in the depth or angle of slot paper insertion does not meet the requirements.
Frequent malfunctioning of the device. For example, the sensor may misjudge the position or state of the stator, causing the slot paper machine to operate when it should not be inserting slot paper.
Equipment fails to start up properly. If the sensor malfunctions, the control system may assume that the equipment is in a defenseless state, preventing the equipment from starting.
l Cause Analysis
The sensor surface is contaminated. Contaminants such as dust, oil, or metal shavings adhere to the sensor surface, affecting its signal transmission and reception.
Sensor damage. Long-term use, mechanical collision or electrical overload may cause damage to the internal components of the sensor, such as the failure of the light-emitting diode or photosensitive element of the photoelectric sensor, or the damage of the sensing coil of the proximity sensor.
Sensor mounting position offset. During the operation of the equipment, due to vibration or human collision, the installation position of the sensor may change, making it unable to accurately detect the target object.
l Solution
Clean the sensor. Use a clean soft cloth and a suitable cleaning agent (such as alcohol) to gently wipe the sensor surface to remove contaminants. For areas that are difficult to clean, use compressed air for blowing.
Replace the damaged sensor. Replace the sensor using the same model as the original sensor. After replacement, the sensor needs to be calibrated to ensure that it can accurately detect the position and condition of the stator slot.
Readjust the installation position of the sensor. According to the installation manual of the equipment, use tools such as gauges (e.g., calipers, micrometers) to readjust the position of the sensor so that it is aligned with the stator slot and to ensure that its detection range and accuracy meet the requirements.
II. Motor Failure
l Fault phenomenon
The speed of slot paper transmission is unstable. The motor speed is not uniform, resulting in the slot paper transfer speed is sometimes fast and sometimes slow, affecting the quality and efficiency of slot paper insertion.
The motor fails to start. After pressing the start button, the motor does not have any response, and the equipment cannot run normally.
Motor overheating. During operation, the temperature of the motor casing is too high, which may trigger the overheating protection device and stop the equipment.
l Cause Analysis
The motor winding is short-circuited or disconnected. Long-term operation, moisture or overloading of the motor may result in damage to the insulation of the windings, resulting in a short circuit or disconnection, which affects the normal operation of the motor.
Power supply problem of the motor. Unstable power supply voltage, lack of phase or loose or damaged power cord may cause the motor to fail to start normally or run erratically.
The mechanical load of the motor is too large. For example, a jammed slot paper transfer mechanism, damaged bearings or excessive friction of the transmission parts may cause the load of the motor to exceed its rated range, resulting in the motor overheating or failing to start.
l Solution
Check the motor winding. Use a multimeter to measure the resistance of the motor winding to determine whether there is a short circuit or broken circuit. If the winding is found to be damaged, the motor needs to be repaired or replaced.
Check the power supply. Use a voltmeter to check whether the power supply voltage is stable, and check whether the power cord is intact and firmly connected. For the case of power supply missing phase, you need to check the power supply line and related electrical equipment, such as contactors, circuit breakers, etc., to find out the failure point and repair it.
Check the mechanical load. Clean up the foreign matter in the transmission mechanism, check whether the bearings are damaged, lubricate the transmission parts or replace the worn parts to reduce the mechanical load of the motor.
Third, the electrical control cabinet failure
l Failure phenomenon
The control system fails. The equipment is unable to carry out slot paper insertion operation according to the preset program, such as the sequence of slot paper insertion is confused and the action time is inaccurate.
The electrical components in the control cabinet are damaged. For example, components such as relays, contactors, etc. are burnt, contacts stick, etc., resulting in the circuit not being able to turn on and off normally.
Short circuit or leakage inside the control cabinet. This may cause accidents such as fuse blowing and electrical fire.
l Cause analysis
Control program error. It is possible that the control system cannot operate normally due to wrong program writing, loss of program or electromagnetic interference.
Aging or quality problem of electrical components. Long-term use, frequent action or poor quality of the components themselves may cause damage to the electrical components.
Confused wiring or damaged insulation in the control cabinet. If the wires are not laid in accordance with the requirements, such as crossed wires, broken insulation, etc., it may lead to short-circuit or leakage phenomenon.
l Solution
Check the control program. Use programming software to check and debug the control system program to find and correct errors in the program. At the same time, take electromagnetic shielding measures to prevent the program from being interfered.
Replace damaged electrical components. For components such as relays and contactors that are burnt and have sticky contacts, replace them with new components of the same type. After replacement, the action parameters of the components need to be adjusted to ensure their normal operation.
Organize the wiring in the control cabinet. Recheck and reorganize the laying of wires to ensure that there is sufficient clearance between wires to avoid crossovers. For wires with damaged insulation, repair them using insulating tape or replacing them with new ones. At the same time, install leakage protection devices to improve the protection of the equipment.
※ 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.
