Automated intelligent equipment fault diagnosis

Publication Time:

2022-07-03 12:30

Source:

In 50% of fault diagnosis cases for automated intelligent equipment, almost all errors are related to power, gas, and hydraulic source problems. For example, power supply problems include power failures in the entire workshop, such as low power supply, blown fuses, and poor power plug connections; air pumps or hydraulic pumps are not turned on, and pneumatic three-in-one or two-in-one units are not turned on. Safety valves or certain pressure valves in the hydraulic system are not open. Check all working power sources, gas sources, and hydraulic sources, including the power sources of each device and the workshop's power source, i.e., all power sources involved in the equipment. Air supply, including the air pressure source required for pneumatic devices. Hydraulic source, including the liquid required for operation

Automated intelligent equipment fault diagnosis

　　In 50% of fault diagnosis problems with automated intelligent equipment, almost all errors are power, gas, and hydraulic source problems. For example, power problems, including power failures in the entire workshop, such as low power supply, blown fuses, and poor power plug connections; air pumps or hydraulic pumps are not turned on, and pneumatic three-in-one or two-in-one units are not turned on. The safety valve or some pressure valve in the hydraulic system is not open. Check all your working power sources, gas sources, and hydraulic sources, including the power sources of each device and the workshop's power source, i.e., all power sources involved in the equipment. Air supply, including the air pressure source required for pneumatic devices. Hydraulic source, including the hydraulic device required for the hydraulic pump required for operation. These basic problems are usually common, so let's learn about the fault diagnosis of automated intelligent equipment together!

Automated intelligent equipment

　　Check if sensor position information can be offset

　　Due to the negligence of maintenance personnel of automated intelligent equipment, some sensor position errors may occur, such as misalignment, sensor failure, sensitivity failure, etc. Regularly check the position and sensitivity of the sensor, adjust the deviation in time, and replace it immediately if the sensor is broken. In many cases, if the supply of power, gas, and hydraulic sources can be guaranteed, more problems are sensor failures. In particular, magnetic induction sensors, due to long-term use, may have the internal iron bonded to each other and cannot be separated, resulting in a normally closed signal, which is also a common failure of this type of sensor, and can only be replaced. In addition, due to equipment vibration, most sensors will loosen their positions during long-term use, so the position of the sensor should be checked in daily maintenance to ensure that it is correctly and firmly fixed.

　　Check relays, flow control valves, and pressure control valves

　　Relays and magnetic induction sensors in automated intelligent equipment may also stick after long-term use, which cannot guarantee a normal circuit and needs to be replaced. In pneumatic or hydraulic systems, when the device vibrates, the throttling opening and the pressure regulating spring of the pressure valve may also loosen or slide. These devices, like sensors, are part of the equipment that requires daily maintenance. Therefore, these devices need to be carefully checked in daily work.

　　Check electrical, pneumatic, and hydraulic circuit connections.

　　If no problems are found after the above three steps, then we check all our circuits. Check if the wires in the system circuit are broken, especially if the wires in the wire trough are broken due to pulling and scraping by the wire trough. Check if the air tube has any damaging creases. Check if the hydraulic oil pipe is blocked. When checking the circuit in this step, use the necessary multimeter, switch to the buzzer file, and check the connection status of the circuit. If the air tube has serious creases, it should be replaced immediately. The hydraulic oil pipe should be replaced equally.

　　The controller of automated intelligent equipment will only malfunction after the above steps are correctly ensured, but this is not a program problem! First, it is uncertain whether the controller is damaged. As long as there is no serious short circuit, the controller has internal short-circuit protection, and generally, a short circuit will not burn out the controller.

　　First, check if there are any high-frequency interference devices near the controller. If so, take action immediately. If outdoors, strong lightning may also cause the controller to malfunction at that time. Now, clear all possible interference devices and then restart the controller.

　　Secondly, if the restart fails, check if the wiring of the controller is loose and the contact is poor.

　　If the wiring is correct. Determine if the company's PLC storage card has some problems. Replace a new card, download the application, and check if the previous memory card is faulty.

　　The above is the fault diagnosis of automated intelligent equipment. If you need to know more, please feel free to contact us!

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