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The magnetic switch CXKB-50NO has a voltage level of DC 10-300v; Magnetic switch CXKB-50NO; In the process of circuit development, it can be said that it has developed rapidly, and various switches have also brought great security to our lives. Just like this magnetic switch, which uses magnetic field signals to control switches, I believe everyone has heard of it before, right. Magnetic switches, also known as magnetic switches, have two types: double contact and single contact. They control magnetic field signals through the induction principle of magnets, and the name of this magnetic switch is&lquo; Magnetism;, It refers to a magnet, because this switch is composed of magnetic parts. What is the difference between such a device and a switch in the working principle of a magnetic switch? Let's follow the editor to understand the working principle of magnetic switches. To understand the working principle of magnetic switches, we need to first understand what they are used for. Let's take the cylinder as an example. In terms of the cylinder, the main function of the magnetic switch is to check the operation of the cylinder piston. When the magnetic ring of the cylinder moves and slowly approaches the magnetic induction switch, the magnetic plate of the magnetic switch will be induced, causing the electric shock to close and generate a signal; When the magnetic ring of the cylinder leaves the area of the induction switch, the magnetic plate loses its magnetic induction, causing the electric shock to disconnect and no signal will be generated. This allows for checking the position and movement of the cylinder piston, thereby controlling the corresponding solenoid valve action. Because magnetic switches are a hazardous product, non operators are not allowed to touch them. There are actually many precautions about magnetic switches, especially for products in this type of voltage circuit, you must be very careful. During the installation process, there should be no remaining substances in the surrounding air, and the magnetic switch should not be subjected to significant impact force during installation; During installation, do not connect with the voltage line; The installation of two magnetic switches should be installed with a distance of more than 3mm, which is also for the sake of consideration. Magnetic switch is a circuit switching device that uses magnetic field signals to control, also known as a magnetic control switch. According to the working principle, it can be divided into two types: contact type (contact magnetic tube type) and contactless type (contactless electric crystal type). What is the difference between contactless magnetic switches and contactless switches? 1. Electrical lifespan: Magnetic switch with contact: The nominal lifespan of magnetic switch with contact is 5 million cycles. However, according to the different load conditions carried, the lifespan value of the contactless magnetic switch may also vary: due to the lack of mechanical contacts inside the contactless magnetic switch, its lifespan is half *. Note: Half * does not mean having no lifespan. 2. Oscillation phenomenon: Magnetic switch with contacts: The bounce generated by the tongue contact during opening and closing can cause oscillation in the output signal. Contactless magnetic switch: Due to the use of a transistor for ON/OFF operation, it will not cause oscillation in the output signal. 3. Switching current: Magnetic switch CXKB-50NO; Magnetic switch with contacts: Due to the current that can flow through the tongue contacts, it cannot be opened or closed with large capacity. Contactless magnetic switch: Although there is some thermal loss based on transistors, it has a larger upper limit capacity than magnetic switches with contacts. In addition, there is a certain margin for changes in instantaneous time (such as inrush currents). How magnetic switches are wired? BK (black): usually the output line, and the output is normally open. BN (brown): Generally, it is a power cord connected to the positive pole of the power supply. Bu (blue): Generally, it is a power cord connected to the negative pole of the power supply. Wh (white): Generally, it is the output line, and the output is normally closed. NPN: Connect the black end to the load, and connect the other end of the load to the positive pole of the power supply. PNP: Connect the black end to the load, and connect the other end of the load to the negative pole of the power supply. Working principle of magnetic switch - Working principle of two wire magnetic switch - How to connect two wires of magnetic switch 1. There is a difference between two wire and three wire proximity switches, and three wire proximity switches are divided into NPN and PNP types, and their wiring is different. 2. The wiring of the two wire proximity switch is relatively simple. The proximity switch is connected in series with the load and then connected to the power supply. 3. Wiring of the three wire proximity switch: connect the red (brown) wire to the positive end of the power supply; Connect the blue wire to the 0V end of the power supply; The yellow (black) line represents the signal and should be connected to the load. And the other end of the load is connected as follows: for NPN type proximity switches, they should be connected to the positive end of the power supply; For PNP type proximity switches, they should be connected to the 0V end of the power supply. 4. The load of proximity switches can be signal lights, relay coils, or digital input modules of programmable PLCs. Working principle of magnetic switch _ Working principle of two wire magnetic switch _ How to connect two wires of magnetic switch 5. Special attention should be paid to the type selection of the three wire proximity switch connected to the PLC digital input module. PLC digital input modules can generally be divided into two types: one type has a common input terminal of 0V power supply, and the current flows out from the input module (mode). In this case, NPN type proximity switches must be selected; Another type of common input terminal is the positive end of the power supply, and the current flows into the input module, which is a trap type input (European mode). In this case, it is necessary to choose a PNP type proximity switch. Don't make the wrong choice. 6. The two wire proximity switch is subject to working conditions. When conducting, the switch itself generates a certain voltage drop, and when cutting off, there is also a certain residual current flowing through. Therefore, consideration should be given when selecting it. Although the three wire proximity switch has an additional wire, it is not affected by adverse factors such as residual currentMore reliable work. 7. Some manufacturers will approach the&lquo; of the switch; Normally open; And&lquo; Normally Closed; Signal simultaneously led out or with added functionality, in which casePlease wire according to the product manual. Magnetic switch CXKB-50NO;