描述

VMIVME-7740-850 常開(kāi)觸點(diǎn)表示觸點(diǎn)常開(kāi)，不允許任何電流通過(guò)

繼電器輸出邏輯模塊是一種能夠?qū)崿F(xiàn)繼電器輸出邏輯控制的模塊，VMIVME-7740-850可以用于各種控制系統(tǒng)中，如電力、IDC機(jī)房、工業(yè)、智慧城市、樓宇等行業(yè)。

繼電器輸出邏輯模塊通常具有以下特點(diǎn)：
– 實(shí)時(shí)性強(qiáng)：能夠?qū)崿F(xiàn)實(shí)時(shí)控制。
– 可靠性高：具有高可靠性，能夠保證系統(tǒng)的穩(wěn)定運(yùn)行。
– 可編程性：提供了易于使用的編程接口，可以根據(jù)用戶的需求進(jìn)行編程。

繼電器輸出邏輯模塊的工作原理如下：

繼電器是一種由少量電流操作的開(kāi)關(guān)，有兩個(gè)觸點(diǎn)，分別是常開(kāi)（NO）和常閉（NC）。當(dāng)施加小的電信號(hào)時(shí)，觸點(diǎn)中的狀態(tài)變化就會(huì)發(fā)生。

繼電器輸出邏輯模塊的核心是繼電器邏輯電路，VMIVME-7740-850顯示各種組件、連接和輸入輸出的關(guān)系。邏輯電路中使用特定的符號(hào)表示不同的電路元件。例如，常開(kāi)觸點(diǎn)表示觸點(diǎn)常開(kāi)，不允許任何電流通過(guò)；常閉觸點(diǎn)表示觸點(diǎn)允許電流通過(guò)。

在繼電器邏輯電路中，觸點(diǎn)NO和NC用于指示常開(kāi)或常閉繼電器電路。VMIVME-7740-850包含兩條垂直線，一條在最左邊，另一條在最右邊。這些垂直線稱為導(dǎo)軌。最左邊的軌處于電源電壓電位并用作輸入軌，最右邊的軌處于零電位并用作輸出軌。

當(dāng)P0.8腳為低電平時(shí)，光耦PC817輸入端的發(fā)光二極管導(dǎo)通發(fā)亮，使得光耦輸出端的光電接收三極管接收到光信號(hào)導(dǎo)通。接著，NPN三極管Q1基極會(huì)形成高電平使其導(dǎo)通。此時(shí)電流順利通過(guò)繼電器輸入端的電磁線圈產(chǎn)生磁場(chǎng)，繼電器右端的開(kāi)關(guān)被吸到3腳，使得3，5兩腳相連。從P2接線端子上看就是1，2腳相連，2，3腳斷開(kāi)。

反之，如果P0.8腳為高電平，光耦輸出端的接受三極管無(wú)法導(dǎo)通，則三極管Q1也無(wú)法導(dǎo)通，電流無(wú)法通過(guò)繼電器的電磁線圈。由于沒(méi)有受到磁力作用，開(kāi)關(guān)則被彈回2腳。從P2接線端子上看，就是1，2腳斷開(kāi)，2，3腳相連。

此外，在繼電器電路模塊中，可以通過(guò)把左下角LED1的陰級(jí)與控制器引腳相連（如圖中與單片機(jī)P0.8引腳相連），從而可以通過(guò)控制引腳的高低電平來(lái)驅(qū)動(dòng)繼電器的開(kāi)合。

總的來(lái)說(shuō)，繼電器輸出邏輯模塊工作原理主要是通過(guò)改變輸入信號(hào)的電平狀態(tài)來(lái)控制繼電器的開(kāi)合狀態(tài)，從而實(shí)現(xiàn)邏輯控制功能。

VMIVME-7740-850 常開(kāi)觸點(diǎn)表示觸點(diǎn)常開(kāi)，不允許任何電流通過(guò)

Relay output logic module is a module that can realize relay output logic control, VMIVME-7740-850 can be used in a variety of control systems, such as power, IDC room, industry, smart city, building and other industries.

Relay output logic modules usually have the following characteristics:
– Strong real-time: can achieve real-time control.
– High reliability: High reliability to ensure the stable operation of the system.
– Programmability: provides an easy-to-use programming interface that can be programmed according to user requirements.

The relay output logic module works as follows:

A relay is a switch operated by a small amount of current and has two contacts, normally open (NO) and normally closed (NC). When a small electrical signal is applied, a state change in the contact occurs.

The core of the relay output logic module is the relay logic circuit, and the VMIVME-7740-850 shows the relationship between various components, connections and input and output. Specific symbols are used in logic circuits to represent different circuit elements. For example, normally open contact means that the contact is normally open and does not allow any current to pass through; Normally closed contact indicates that the contact allows current to pass through.

In a relay logic circuit, contacts NO and NC are used to indicate normally open or normally closed relay circuits. The VMIVME-7740-850 consists of two vertical lines, one on the far left and the other on the far right. These vertical lines are called guides. The leftmost rail is at the supply voltage potential and is used as an input rail, and the rightmost rail is at zero potential and is used as an output rail.

When the P0.8 pin is low voltage, the light-emitting diode at the input end of the optocoupler PC817 is illuminated, so that the photoreceiving triode at the output end of the optocoupler receives the optical signal. Next, the NPN triode Q1 base forms a high level to enable it to be switched on. At this time, the current smoothly generates a magnetic field through the electromagnetic coil at the input end of the relay, and the switch at the right end of the relay is sucked to pin 3, so that the two pins 3 and 5 are connected. From the P2 terminal, it can be seen that pins 1,2 are connected, and pins 2,3 are disconnected.

On the contrary, if the P0.8 pin is high, the accepting triode at the optocoupler output can not be switched on, the triode Q1 can not be switched on, and the current cannot pass through the relay’s electromagnetic coil. Since there is no magnetic force, the switch is bounced back to the 2 pins. From the point of view of the P2 terminal, that is, feet 1,2 are disconnected, and feet 2,3 are connected.

In addition, in the relay circuit module, the negative level of LED1 in the lower left corner can be connected to the controller pin (as shown in the figure and the P0.8 pin of the MCU), so that the opening and closing of the relay can be driven by controlling the high and low level of the pin.

In general, the working principle of the relay output logic module is mainly to control the opening and closing state of the relay by changing the level state of the input signal, so as to achieve the logic control function.

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Company Introduction:
Chengdu Sunshine Xihe Co., Ltd. specializes in one-stop procurement consulting for imported industrial spare parts, offering original equipment and professional discontinued parts services. We are committed to providing efficient and reliable automation solutions for our customers. Customer support fast responseThe network of partners spans all continentsGlobal partner networkAlways achieve more delivery, be it parts, service or speed



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