Suzhou days Lai He Automation Technology Co., Ltd.
Contact: Manager Song
E-mail: Talach @ tianlaihe. Com
Address: North Road, Suzhou High-tech Zone 505
Proximity switches, many automated equipment which will be used, its presence everywhere, because of its advantages such as reliable work has been widely used.
Bring you to know a small proximity switch, because it is very reliable, it's figure everywhere
1, Proximity switch: When the proximity switch is close to an object, it will send a control signal immediately. It is also called proximity switch, also called contactless switch.
2, Proximity switch classification: Proximity switch is divided into two kinds of wiring mode, two-wire system and three-wire system, two-wire system points DC and AC, three-wire system NPN and PNP type. Their wiring is not the same.
3, Proximity switch wiring: (1) Two-wire proximity switch wiring is relatively simple, one of the wires close to the switch and the load connected in series to the power on it. (2) Wiring of three-wire proximity switch: The red (brown) color line is connected to the positive terminal of the power supply and the blue line is connected to the 0V terminal of the power supply. Yellow (black) color line signal output line should be connected to the load. The other section of the load for the NPN-type proximity switches should be connected to the power supply positive side of the PNP-type proximity switch should be connected to the power 0V side.
Bring you to know a small proximity switch, because it is very tricky, its presence everywhere 6 7
4, the load on the proximity switch can be a signal lamp, relay coil or PLC programmable digital input module.
5, two-wire proximity switch because of the restrictions on working conditions, close to the switch itself has a certain pressure drop, by the time there is a certain residual current through, so the choice should be considered. Three-wire proximity switch is different, although more than one line, but not affected by unfavorable factors such as residual current, the work is more reliable.
6, some proximity switches will often come out and often close the signal at the same time, or to add other functions, in this case, should be in accordance with the instructions specific wiring.