3 Wire Proximity Sensor Connection To Plc

2 wire dc pnp 2 wire dc npn 3 wire dc pnp and 3 wire dc npn cases have been covered in this discussion.

3 wire proximity sensor connection to plc.

If we connect the photoelectric switch to plc input channel 3 the red wire will be connected to 24vdc and the black wire will be connected to. Pnp switched positive npn switched negative switched refers to which side of the controlled load relay small indicator plc input is being switched electrically. You will also learn what a 3 wire discrete sensor is and recognize some of the common types of 3 wire discrete sensors. The most common type of load would be a plc programmable logic controller dc input.

Here s a simple way remember how to wire up a 3 wire dc pnp or npn sensor. For example we will reference an inductive proximity sensor. Knowing how to connect a 3 wire dc solid state proximity sensor to a plc programmable logic controller is dependent on the type of proximity sensor and the plc to be used that is specific to the design of the circuit and the preferred application. Here is a wiring diagram of a pnp sensor.

Other examples of a load could be a relay or machine alarm just make sure the load rating of the sensor is not exceeded. A typical 3 wire dc sensor s output has a rating of 100ma to 200ma. There are two basic types of 3 wire proximity sensor applicable to certain types of plc. The box in the diagram represents the load.

Instead of using a plc to construct a working electrical circuit for a certain application making use of a traditional wiring method is also a mutually exclusive choice which is another workable option when a plc is not available. The connection of a proximity sensor to an electrical circuit is not limited to only one possibility. Connecting a 4 wire dc sensor is the same as a 3 wire sensor but each output wire is connected to a different input on the input card. Wire connection of fx3u plc and 3 wire npn proximity sensor npn proximity sensor is characterized as low level conduction its signal flows from the load to the proximity sensor.

For a polarized device like the photoelectric sensor care must be taken to connect the positive wire red wire to 24vdc and the black wire to the negative terminal plc input card connection. Three wire sensor in plc three wire sensor connection in plc. But the signal output wire of proximity sensor must be connected to the signal input point of plc so when a npn proximity sensor is connected the signal flows. This sensor is the ck1 00 2h capacitive proximity sensor.