The wiring method of solenoid valves is actually the simplest among all automatic control valves. Generally, the wiring methods we come into contact with are only two types: lead type and wiring box type. How to wire a Pneumatic Solenoid Valve? Summarize and generalize how to wire a Pneumatic Solenoid Valve in a simple and understandable way.
According to the type of wiring, there are two commonly used types of wiring for solenoid valves: lead type and wiring box type.
First, the principle is the same. The lead type is actually to unplug the plug in the wiring box and connect a power cord from the inside of the coil to form an integrated type.
1. Lead type; It is mostly used for waterproof and explosion-proof (flameproof) types. Its advantage is that the lead wire can be directly connected to the control system. The disadvantage is that if the distance from the control system is relatively far, additional wiring is required.
2. Wiring box type: At present, the most widely used wiring method is this one, which adopts DIN connectors. No matter how far the control system is, it will not be affected; there will be no broken wires in the middle, and no additional nodes will be added.
Power connection (DN32-DN150):
Before connecting the power supply, please confirm whether the rated power of the valve is consistent with the power supplied.
1. Turn off the power and unscrew the junction box.
2. On the connection body, you will find the rectifier circuit board as shown in the figure.
3. Connect the live wire and the neutral wire to terminals 1 and 2, respectively. These are grounding wires. Be careful not to reverse the connection of the live wire and the neutral wire. 4. Reinstall the junction box. Note: To extend the service life of the valve, please install all the gaskets correctly.
Power connection (DN200): The wiring method is the same as that for the output voltage of 12Vde or 24Vde from DN15 to DN25(Part B).
Second, classified by the type of coil, the common ones include single-coil switch control (90% of the products on the market are of this type), single-coil self-holding type, and double-coil self-holding type.
The wiring of the single-coil switch control type is the most common. Whether it is the lead type or the wiring box type, it has three wires.
If it is controlled by direct current, such as DC24V, there are positive poles, negative poles, and ground wires. There is no distinction between positive and negative poles. Remember not to distinguish between positive and negative poles!
② If it is controlled by alternating current ,such as AC220V, there are neutral wires, live wires, and ground wires. There is no distinction between neutral and live wires. Similarly, there is no distinction between neutral and live wires.
2. Wiring for single-coil self-holding control type solenoid valves; This type is only applicable to DC control systems. It has three wires, namely A, B, and C, among which B is the common terminal.
When A is connected to the positive terminal and B to the negative terminal, the solenoid valve is open. After the power is cut off, the solenoid valve remains open and does not require electricity to maintain it at this time.
② Connect C to the positive terminal and B to the negative terminal. The solenoid valve is closed. After the power is cut off, the solenoid valve remains closed. Similarly, at this time, the solenoid valve does not consume electricity.
Note: Single-coil self-holding solenoid valves are mostly used in pulse control systems that operate for long periods and have insufficient power.
3. Double-coil self-holding control type wiring; The control principle is equivalent to that of the single-coil self-holding type, but this one adopts independent coil control of the switch. It is mostly used for pulse control in some high-temperature solenoid valves and high-pressure solenoid valves fields.
It is equivalent to the wiring of two sets of single-coil switch control type, with only one coil controlling one state. After powering off, the valve will remain. The moment the top coil is powered on, the solenoid valve opens; the moment the side coil is powered on, the solenoid valve closes.
Wiring method of pneumatic solenoid valve
Wiring method: One input and two outputs. One input is the air source, and the two outputs are one to the membrane head and the other to be vented. The solenoid valves directly installed on the pipeline are generally electric solenoid valves, which can only control two states: on and off.
There is a sealed cavity inside the pneumatic solenoid valve, with through holes opened at different positions. Each hole of the pneumatic solenoid valve leads to a different oil pipe. In the middle of the cavity is the valve, and on both sides are two electromagnets. When the coil of one side of the magnet is energized, the valve body will be attracted to that side.
The pneumatic solenoid valve blocks or leaks different oil discharge holes by controlling the movement of the valve body, while the oil inlet hole is always open. Hydraulic oil will enter different oil discharge pipes and push the piston in the cylinder through the pressure of the oil in the pneumatic solenoid valve.
In this way, the mechanical movement of the entire solenoid valve can be controlled by regulating the current of the electromagnet of the pneumatic solenoid valve.
The wiring method of the pneumatic solenoid valve: Connect to the Pneumatic Solenoid coil. There are a total of three points on the Pneumatic Solenoid coil. Connect the two points on the left and right, and do not wire the middle point.
The pneumatic piston actuator uses compressed air as the power source. Through the movement of the piston, it drives the crank arm to rotate 90 degrees, thereby achieving the purpose of automatically opening and closing the valve.
The main components of a pneumatic valve include adjusting bolts, actuator housing, crank arms, cylinder blocks, cylinder shafts, pistons, connecting rods, universal joints, etc.
Above is how to wire a Pneumatic Solenoid Valve. Instructions for wiring a Pneumatic Solenoid Valve content, to learn more related information are available at https://www.joosungauto.com/.
