Check the relays, flow control valves, pressure control valves of the automation equipment. The requirements for accessories should be very high.

Relays are the same as magnetic induction sensors. Long-term use can also lead to ground adhesion, which can not guarantee the normal electrical circuit and needs to be replaced. In pneumatic or hydraulic systems, the opening degree of the throttle valve and the pressure adjustment spring of the pressure valve may also loosen or slide with the vibration of the equipment. These devices, like sensors, are components that require routine maintenance in automated equipment.

Check electrical, pneumatic and hydraulic circuit connections

If none of the above three steps are found, then check all circuits. Check whether the wires in the circuit are broken, especially if the wires in the trunk are cut off by the trunk due to pulling. Inspect the trachea for damaging creases. Check if the hydraulic oil pipe is blocked. If the trachea is severely creased, replace it immediately. The hydraulic tubing must be replaced as well.

故障 After ensuring the above steps are correct, the fault may appear in the controller of the automation equipment, but it can never be a program problem. First of all, don't be certain that the controller is damaged. As long as no serious short circuit has occurred, the controller has short circuit protection inside. The general short circuit will not burn the controller.

First, check if the equipment with high frequency interference is near the controller. If so, remove it immediately. If you are outdoors, high-intensity lightning may also cause the controller to malfunction. In this case, remove all possible interfering devices before restarting the controller.

Secondly, if the restart is invalid, check the controller wiring for looseness and poor contact.

Finally, if the wiring is correct. Determine if there is a problem with the PLC's memory card. Replace the card with a new one, download the program, and check if the previous memory card is faulty.