Single electronically controlled solenoid valve: that is, there is only one solenoid coil, generally used in 2-position 3-way solenoid valve, coil voltage level is generally used DC24V, AC220V and so on. Two three-way solenoid valve is divided into normally closed type and normally open type two, normally closed type refers to the coil is not energized when the gas path is broken, normally open type refers to the coil is not energized when the gas path is open.
Normally closed two-position three-way solenoid valve operation principle: the coil is energized, the gas path is connected, and once the coil is powered off, the gas path will be disconnected, which is equivalent to “point”. Normally open two-position three-way single electronic control solenoid valve operation principle: power to the coil, the gas path is disconnected, once the coil is powered off, the gas path will be connected, which is also “point”.
Double electronically controlled solenoid valve: that is, there are two electromagnetic coils, generally used in two five-way solenoid valve, two five-way double electronically controlled solenoid valve action principle: to the positive acting coil power, then the positive acting gas path is connected (positive acting air outlet), even if the positive acting coil is powered off, the positive acting gas path is still connected, will be maintained until the anti-acting coil power so far. When the anti-acting coil is energized, the anti-acting gas path is connected (the reaction producing hole has gas). Even if the anti-acting coil is powered off, the anti-acting gas path is still connected and will be maintained until the positive acting coil is energized. This is equivalent to “self-locking”. Based on this characteristic of the two-position five-way double-controlled solenoid valve, when designing the electromechanical control circuit or preparing the PLC program, the solenoid valve coil can be operated for 1 to 2 seconds, which can protect the solenoid valve coil from being easily damaged.
1, the number of electromagnetic coils is different.
Single electronically controlled solenoid valve has only one solenoid coil; The double electrically controlled solenoid valve has two electromagnetic coils.
2. Different uses.
Single electronic control solenoid valve is generally used for 2-position 3-way solenoid valve; Double electronically controlled solenoid valves are generally used for 2-position 5-way solenoid valves.
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