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Common fault detection methods for automatic production line
Time:2020-01-07
Views:938
Automatic production line fault common detection methods 1. Check all power supply and air supply of automatic test equipment. Problems with power and air sources often lead to problems with automation equipment. For example, power supply problems, including the entire plant power failure, such as low power, burn insurance, bad contact with the power plug, and so on; Air compressor did not open, pneumatic three or two pieces did not open, the current limiter was closed. Testing automation equipment should include the following aspects: power supply, including the power supply for each equipment and workshop power supply and pneumatic equipment required by the pressure source. 2. Check the sensor position of the automation equipment for any offset. Due to the negligence of equipment maintenance personnel, some sensor location errors may occur, such as not in place, sensor failure, sensitivity failure and so on. Always check the sensor position and sensitivity, deviation timely adjustment, if the sensor is broken, immediately replace. In addition, due to the vibration of automation equipment, most of the sensors in the long-term use, there will be a loose position of the situation, so in the daily maintenance to check whether the position of the sensor is correct, whether fixed firmly. 3. Check the automatic equipment relays, current LIMITER, pressure relief valve, relays and magnetic induction sensors, as long-term use will also appear to tie adhesion, which can not guarantee the normal electrical circuit, need to be replaced. In the gas loop system, the pressure regulating spring of the current limiter and the pressure reducing valve also loosens or slips with the vibration of the equipment. These devices, like sensors, are parts of automated equipment that require routine maintenance. 4. Check electrical, solenoid, and gas loop connections. If none of the above steps is found to be faulty, check all circuits. Check the circuit of the wire is broken, in particular, the wire slot is torn by the wire slot. Check the trachea for any damaging creases or cracks. If the trachea is badly creased or cracked, replace it immediately. 5. Check the SOLENOID valve has no reverse action, solenoid valve is by solenoid suction valve core so that the cylinder to reverse action, when the SOLENOID failure, valve core does not act, resulting in the cylinder can not act. If the air loop more moisture, dust, will also lead to spool stuck, blocked, resulting in the cylinder can not move, 6. After making sure that these steps are correct, the failure is likely to occur in the controller of the automation device, but it can never be a procedural problem. First of all, do not be sure that the controller is destroyed, as long as there has not been a serious short circuit, the controller internal short circuit protection, General Short circuit will not burn out the controller.
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