The connection between the solenoid valve and the motor, how the relay is connected with the solenoi

The output point of the PLC drives the coil of the relay, and the contact point of the relay drives the solenoid valve. The principle is that through the programming logic control, when the external solenoid valve needs to be turned on, the output signal of the PLC output terminal drives the coil of the relay, and the coil of the relay is engaged to drive the contact to close, so as to achieve the purpose of driving the solenoid valve, the motor valve is also known as the "electric valve", the main difference between the solenoid valve and the motor valve is that the motor valve can not only control the switch of the valve, but also adjust the size of the valve switch. 1.

Switch form: The solenoid valve is driven by the coil, which can only be opened or closed, and the action time is short when the switch is opened. The drive of the electric valve is generally driven by a motor, and it takes a certain amount of time to simulate the opening or closing action to complete.

Yes, you can make adjustments. 2.Working nature: The general flow coefficient of solenoid valves is very small, and the working pressure difference is very small. For example, the flow coefficient of a 25-caliber solenoid valve is much smaller than that of a 15-caliber electric ball valve. The solenoid valve is driven by a solenoid coil.

It is relatively easy to be damaged by voltage shocks. It is equivalent to the role of the switch, which is the two functions of opening and closing.

Which is the best manufacturer of valves in Shanghai? There are many valve manufacturers in Shanghai, specifically which one is the best, in fact, it is very difficult, this depends on where you can evaluate it conveniently, each manufacturer produces different valve products, and the fields involved are also very different, for example, some are doing water systems, some are doing industrial systems, and industrial systems are divided into many fields, such as: electric power, chemical industry, petroleum, pharmaceuticals and many other fields.

Here is a brief introduction to a few companies, Shanghai Qizhong valve in the field of water system, Suzhou Neway valve, Shanghai Guanlong valve this unit is not bad, industrial valve field can also be.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. Although the ranking may change due to time and market conditions, the following brands are generally considered to be one of the top brands in the valve industry: water system valves and industrial valves The following more influential first-line brands can be used as a reference, and the following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only:

Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Suyan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

An interlock connection is sufficient.

The PLC controls the solenoid valve, and the principle is that the pre-split output module of the PLC is connected to the coil end of the solenoid valve. When there is a voltage output at the corresponding point of the module, the solenoid valve coil is energized and the contact is engaged. No voltage output, coil loss of power, contact disconnection.

If the PLC is a transistor output, the COM of the output point should be connected to 0V, so that it can be connected to the transistor output or the relay output.

Manual switches can be used for equipment commissioning, a step in the work process, or for testing and inspection of solenoid valves. It should be noted that when the manual function is not applicable, the actuator should be turned off, otherwise the operation of the automatic control will be affected.

The solenoid valve is the actuator, and the relay is the intermediate conversion device. I don't understand your intentions, there are various wiring methods, and you need to connect them according to your purpose.

The coil of the solenoid valve is connected in series to the normally open contact of a relay and connected to the control power supply.

When the relay is engaged, the solenoid valve is energized, and when the relay is not engaged, the solenoid valve loses power.

Hello dear, the L of the power supply is connected to any line of the foot switch, the other line of the foot switch is connected to any line of the electromagnetic buried valve, and the other wire of the solenoid valve is connected to the n of the power supply, so that after the circuit is formed, the foot switch is energized when stepped on, and the solenoid valve acts. The matching 220V solenoid coil can be selected, the coil contact A is connected with the power supply N, the coil contact B is connected with the pedal contact 2, the pedal contact 1 is connected with the power L (live wire), the pedal power is turned on, and the solenoid valve ruler is connected with the liquid. If the solenoid valve and the vacuum pump are to act synchronously, the vacuum pump terminal 1 can be connected with the power supply n, the vacuum pump terminal 2 is connected with the pedal contact point 2, and when the pedal is stepped on, the solenoid valve and the vacuum pump are energized at the same time, and the synchronous action is carried out. Thank you.

1. The working principle of the pneumatic solenoid valve: if the positive action coil is energized, the positive action gas path will be turned on (the positive action air outlet hole has air), even if the positive action gas path is still connected after the positive action coil is powered off, it will be maintained until the reaction coil is electrified. If the reaction coil is energized, the reaction air path will be turned on (the reaction action outlet hole has gas), and even if the reaction coil is powered off, the reverse lead action gas path will still be turned on, and it will be maintained until the positive action coil is powered.

This is equivalent to "self-locking".

2. Wiring method: one in and two out, one in is the air inlet source, and the two out is all the way to the membrane head, all the way to the empty. The solenoid valve directly installed on the pipeline is generally an electric solenoid valve, which can only control two types: on and off.

1. The working principle of the pneumatic solenoid valve: if the positive action coil is energized, the positive action gas path will be turned on (the positive action air outlet hole has gas), even if the positive action coil is powered off, the virtual auspicious positive action gas path is still connected, and it will be maintained until the negative action coil is energized. If the reaction line is energized, the reaction gas path is turned on (the reaction action outlet hole has gas), and even if the reaction coil is powered off, the reaction action gas path is still on, and it will be maintained until the positive action coil is powered.

This is equivalent to "self-locking".

2. Wiring slag leasing method: one in and two out, one in is the air inlet source, and the two out is all the way to the membrane head, all the way to the empty. The solenoid valve directly installed on the pipeline is generally an electric solenoid valve, which can only control two types: on and off.

Hello dear! 1. Wire adjustment method: because the solenoid valve is a double coil, the lead wire is three cores, if it is four cores, one of the valve shells is the grounding wire.

Its internal wiring. Use the multimeter ohm file to find the termination zero line, and then connect the main and auxiliary valve output lines of the solenoid valve control board respectively. Preset oil volume start-up test, if there is a small flow before shutting down, the wiring is correct, if there is no small flow, the replacement and line can be.

2. Energizing method: Before installing the solenoid valve, first use the multimeter ohm file (x100) to find out the termination zero line. In addition, two are the main and auxiliary valve lines, because the solenoid valve is 220V AC power supply, so the two wires will be connected to the 220V power supply.

Hope it helps.