Proximity switch LJ18A3-8-Z/BX wiring method Introduction to Proximity Switch: Proximity switches can be divided into cylindrical, square, groove, perforated (through) type and separate type according to their appearance. The cylindrical type is easier to install than the square type, but its detection characteristics are the same. The detection part of the groove type is inside the groove and used to detect objects passing through the groove. The through type is rarely produced in my country, but it is more common in Japan and can be used for Small parts such as screws or balls and buoys are assembled into water level detection devices. Wiring instructions 1. The three wires of the DC three-wire proximity switch are: brown wire-positive power supply blue wire-negative power supply black wire-output signal 2. AC two-wire switch: connect the load and the proximity switch in series and then connect to the AC power terminal. Wiring form 1) Proximity switches have the difference between two-wire and three-wire systems. Three-wire proximity switches are divided into NPN type and PNP type, 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) The wiring of the three-wire proximity switch: the red (brown) wire is connected to the positive terminal of the power supply; the blue wire is connected to the 0V terminal of the power supply; the yellow (black) wire is the signal and should be connected to the load. The other end of the load is connected like this: For NPN type proximity switches, it should be connected to the positive end of the power supply; for PNP type proximity switches, it should be connected to the 0V end of the power supply. 4) The load of the proximity switch can be a signal lamp, a relay coil or a digital input module of a programmable controller PLC. 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 categories: one type of public input terminal is the negative pole of the power supply, and the current flows from the input module. At this time, the NPN type proximity switch must be selected; the other type of public input terminal is the positive pole of the power supply. The current flows into the input module. At this time, the PNP type proximity switch must be selected. Don't choose the wrong one. 6) The two-wire proximity switch is restricted by the working conditions. When it is turned on, the switch itself produces a certain voltage drop, and when it is turned off, there is a certain amount of residual current flowing. It should be considered when selecting. Although the three-wire proximity switch has one more wire, it is not troubled by unfavorable factors such as residual current, and its work is more reliable. 7) Some manufacturers lead the "normally open" and "normally closed" signals of the proximity switch at the same time, or add other functions. In this case, please follow the product manual for specific wiring. Hubei Hangrong Electric Co., Ltd. Proximity switch DZJK-2 Proximity switch JKT03H-F00Y 70H 24V Proximity switch J4-D8 B2-T Rope switch HFKLT2 Rope switch HYLSF2 Deviation switch PL10-2D Sound and light alarm SG-L AC220V Emergency switch HFKLT2-â…¡ Two-way rope switch PSD-LS-â…¡ Two-way rope pull switch XYG2-D12-S Two-way rope pull switch YGL-220AKB2 Permanent magnet DZJC-1 Permanent magnet: suitable for DZJK-1, DZJK-2 Size: length * width * height (omitted) Fixing bolt M5 Permanent magnet DZJC-2 Permanent magnet: suitable for DZJK-1, DZJK-2 Size: 38 thick 22 fixing bolt M5 Rotary resistance switch XYZYZ-20 AC220V Rope switch LD2E-CW-APK Explosion-proof two-way rope pull switch EXKLT2-W Longitudinal anti-tear device ZL-B-11 Proximity switch LI18A3-8-J1/EZ Slip switch\HQSK600 Slip switch XL-DH-1
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