Two five-way solenoid valves
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May I ask everyone: in what situations should a two-electrovalve two-position five-way solenoid valve be used to control a double-acting cylinder, and in what situations should a single-electrovalve two-position five-way solenoid valve be used? Thank you! !
The typical usage pattern for dual-control electromagnetic directional valves is such that the solenoid valve remains powered on for long periods of time; over time, this can cause the coil of the solenoid valve to burn out. Therefore, using a dual-control system is a safer option. The usage pattern for single-control electromagnetic valves is the opposite of that in the case of dual-control systems!
I thought that for FC double-acting cylinders, a single electronically controlled solenoid valve should be used: the cylinder opens when power is applied, and it closes when power is cut off or there is a circuit fault. However, under certain special operating conditions where a strict distinction between power loss and circuit failure is required, dual-electronic control solenoids are used. When the first circuit is powered, the cylinder opens; when the second circuit is powered, the cylinder closes. In the event of a circuit fault, it stays in the intermediate position of the solenoid valve. This way, it will not be confusing whether the cylinder has stopped working due to control requirements or a circuit fault.
The double-acting ones on the upper floor have no distinction between FC and FO.
Firstly: To achieve automatic control of double-acting cylinders, 2-position 5-way or 2-position 4-way control valves are typically used. When a 2-position 5-way solenoid valve is employed, the following requirements are generally followed: 1\ When it is necessary for the cylinder to open or close under electrical control, a single-electric-control system can be used; after opening or closing, the solenoid remains powered, and the cylinder returns to its original state once the power is cut off. This function is commonly referred to as electric-opening or electric-closing functionality. 2\ When the cylinder needs to both open and close under electrical control, a dual-electric-control system is used; after opening or closing, the solenoid is de-energized.
Is it in the middle when there’s no power at all?