Wiring diagram for npn and pnp 4 wire sensors with t he d2 16nd3 2 technotes product group. The switching logic pnp or npn are not related to the supply voltage of the sensor or the operating voltage of the input.
Using 24 V Pnp Switch On Npn Input Electrical Engineering
Pnp and npn sensor wiring diagram. In contrast in north america the country where the transistor was invented relay outputs with potential free contacts for ac 110 v loads are most widely used. In our case the plc input will be our load. The difference is a result of the internal circuit design and type of transistors used. Heres a simple way remember how to wire up a 3 wire dc pnp or npn sensor. Pnp or npn style defines how the sensor operates the switched lead. The box in the diagram represents the load.
Wiring npn and pnp sensors into the plc with an interposing relay video click plc hmi rotary encoder dial input video. Hence it is known as sourcing sensor. A pnp sensor may be either no or nc as can an npn be either no or nc. Solid state devices are active as opposed to passive and therefore usually require some small amount of operating power. Switched or sensor signal. They are typically designed as three wire devices with leads or connections for.
The 24 vdc and 0 vdc wires power the device. 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. When connecting to the plc the plc input acts as the load. Sensor output wires are run to separate plc inputs. Pnp versus npn switching.
The fa q section may have information that can help. This sensor is the ck1 00 2h capacitive proximity sensor. 15 feb 2002 document name. Sensor output wires are run to separate plc inputs. Two specific types of 3 wire sensors are available. Npn sensor and its 3 wire diagram this sensor sinks its ground to the output.
Pnp switched positive. The figure 1 depicts 3 wire diagram of pnp sensor. Here is a wiring diagram of a pnp sensor. 16 point dc input module last revised. Npn switched negative switched refers to which side of the controlled load relay small indicator plc input is being switched electrically. Load refers to device to which the sensor delivers power.
It also mentions pnp 3 wire diagram and npn 3 wire diagram of these sensors. The following is a wiring diagram of an open collector npn sensor. In my experience pnp switching outputs are used mainly in europe and npn outputs almost exclusively in asia. Referring to the npn wiring diagram above note that the sensor supply voltage and the high side of the load are connected to the same point and are therefore at the same voltage. Sensor output wire is run straight to plc input. Npnpnp 4 wire sensorsvsd faq please refer to our tech support website for more info on sensors.
205 series information type. A key point to observe is that pnp and npn has nothing to do with whether the sensor is normally open no or normally closed nc ie. Pnp sensor and its 3 wire diagram this sensor source its positive power to the output. Hence it is known as. Load could be lamp relay pneumatic valve plc input etc. Connect sensor and input module to power.
Sensor output wire is run straight to plc input.
Gallery of Pnp And Npn Sensor Wiring Diagram
