Pin electromagnetic coil special for high frequency valve 3130J

Common sense sharing of solenoid valve coil maintenance

1, the effect of solenoid valve coil

When the active central pilot valve in the solenoid valve coil is excited by the coil, the driving shaft moves, and then the valve conduction condition is changed; The so-called dry or wet coil only refers to the working environment and the action of the valve, and there is no big difference. When the coil is electrified, the resistance of the coil will be different. When the same control coil is electrified at the same time and frequency, the inductance will change with the orientation and difference of the core, that is, its impedance will change with the orientation of the core structure. When the impedance is small, the current flowing through these coils will increase.

2, the reason why the solenoid valve coil is often too warm

When the solenoid valve coil is in working condition (power supply), the magnetic core is attracted to form a closed magnetic circuit. That is, when the inductance is timed under a long-term power-on operation condition, the calorific value is normal, but the iron core can't be smoothly attracted after power-on, the inductance of the coil decreases, the impedance decreases, and the current increases accordingly, resulting in excessive coil current, which affects the service life. Oil pollution hinders the iron core's activity, and it runs slowly after power-on, or even can't be completely attracted normally.

3, solenoid valve coil is good or bad detection

Use a multimeter to measure the resistance of the solenoid valve. The resistance of the coil should be between 100 ohms! If the infinite resistance of the coil is broken, the solenoid valve with iron products can also be put on the solenoid valve coil, because the solenoid valve can attract iron products after the solenoid valve coil is electrified. If you can absorb iron products, it means that a coil is good, but it means that the coil is broken!

4, solenoid valve coil power conditions

According to the type of power supply, communication solenoid valve and DC solenoid valve are selected. Generally speaking, it is convenient for enterprises to access power for communication.

Ac220v and DC24V are used for voltage specifications, and DC24V is selected as much as possible.

Generally, the operating voltage fluctuation of power supply can be +10%-15% through communication, and the DC commitment is about% 10. If it is out of tolerance, it is necessary to take voltage stabilization measures or put forward a special economic order management requirement.