How to troubleshoot relay film type faults

The faults of the relay are mainly manifested as no signal and false signal, such as thin-film faults. details as follows:

1. Due to the poor fit between the plunger and the towel body (or skeleton), or due to burrs and uncleanness, the plunger is stuck and the pressure relay does not operate. The matching problem of the valve core (plunger) and Zhongtianan L should be guaranteed to be 0.007~0.015mm, the burrs should be removed, cleaned first when assembling, and then coated with disulfide metal wire {(black) lubrication on the surface, users often It is wrong to think that molybdenum disulfide is a dirt and wash it off. In this way, the plunger will not move flexibly and cause a malfunction.

2. The film pressure relay is a kind of pressure relay that uses the oil pressure to rise to make the film bulge up and push the plunger up. When the oil film ruptures, the pressure oil directly acts on the plunger, leaking the oil from the matching gap between the plunger and the middle body hole, causing obvious changes in the action value and retreat range, resulting in misoperation of the action. Only replace with new membrane.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

3. Inaccurate positioning of the micro switch or not pressed tightly. The micro switch of the pressure relay is at the position of the compression screw. Therefore, when connecting and disconnecting wires, the force of the screwdriver on the micro switch and the collision force on the wire when repairing the shell may cause the micro switch to be misaligned, resulting in a change in the action value, that is, changing the original adjusted action. Pressure, and false start signal.

4. The micro switch is not sensitive and has poor resetability. The spring force of the reed in the micro switch is insufficient, and the contact will not bounce up after being pressed down; or the micro switch signal is abnormal due to excessive dust and the contact is stuck, and the micro switch signal is incorrectly activated. At this time, the micro switch should be repaired or replaced. switch.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

5. The manufacturing accuracy of the relay is poor. If the handle is unstable in the towel body groove, the matching gap between the spring seat and the upper body is too small, the size of the plunger is wrong, etc. In addition, the main and auxiliary adjustment screws of the pressure relay are loose, and the lever cannot play the role of pressing down the micro switch. Cause the pressure relay to fail.