The difference between double control solenoid valve and single control solenoid valve

Dual control electromagnetic The difference between valve and single control solenoid valve

Single control solenoid valve:< /p>

That is, there is only one solenoid coil, which is generally used in 2-position 3-way solenoid valves. The coil voltage level is generally used DC24V, AC220V, etc. Two-position three-waySolenoid valve is divided into two types: normally closed type and normally open type. Normally closed type means that the air circuit is disconnected when the coil is not energized. , Normally open type means that the air path is open when the coil is not energized. The operating principle of the normally closed two-position three-way solenoid valve: energize the coil and connect the air path. Once the coil is deenergized, the air path will be disconnected, which is equivalent to "jogging". The operating principle of the normally open two-position three-way single solenoid valve: energize the coil and the air circuit is disconnected. Once the coil is deenergized, the air circuit will be connected, which is also a "jogging".

Dual control solenoid valve:

There are two solenoid coils, generally used in two-position five-way solenoid valves, two-position five-way dual control Solenoid valve action principle: When the positive action coil is energized, the positive action air path is connected (there is air in the positive action air outlet). Even if the positive action coil is deenergized, the positive action air path is still connected and will remain open until until the reaction coil is energized. When the reaction coil is energized, the reaction air circuit is connected (there is air in the reaction outlet). Even after the reaction coil is powered off, the reaction gas circuit is still connected, and it will remain connected until the forward action coil is energized. . This is equivalent to "self-locking". Based on the characteristics of the two-position five-way double electric control solenoid valve, when designing the electromechanical control loop or programming the PLC, the solenoid valve coil can be operated for 1 to 2 seconds, which can protect Solenoid valve The coilis not easily damaged.

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