Heres a simple way remember how to wire up a 3 wire dc pnp or npn sensor. Pnp switched positive npn switched negative switched refers to which side of the controlled load relay small indicator plc input is being switched electrically.
Inductive Sensor Output Does Not Trigger Ramps
Npn proximity sensor wiring diagram. Inductive proximity sensor cutaway with annotation. Here is a wiring diagram of an npn sensor. In this video i demonstrate an npn inductive proximity sensor circuit. The following is a wiring diagram of an open collector npn sensor. Either the load is connected to negative and the positive is switched pnp continue reading an easy way to remember pnp and npn sensor. Classification by output circuit.
You will notice that the load appears between the v brown and switching wire black. The v brown will be attached to the common input and the switching wire black will be attached to the input number. Photoelectric sensor works on ir principle and this sensor has 4 wireno and nc in sensor has also been explained4 wire sensor has both no and nc operating mode in it. In our case the plc input will be our load. This sensor is the ck1 00 2h capacitive proximity sensor. When an object is placed near the sensor the output device turns on.
This classification is based on the type of output circuit and the output voltage. Industrial sensors of all types have connection diagrams. 3 wire and 4 wire dc. The box in the diagram represents the load. Wiring diagrams show the hook up offour sensors with npn and pnp outputs. When connecting to the plc the plc input acts as the load.
Gallery of Npn Proximity Sensor Wiring Diagram
