Npn Pnp Proximity Switch Wiring

The pnp and npn sensors are 3 wire dc devices.

Npn pnp proximity switch wiring. Sink source 2 wire or npn and pnp 3 wire models metal housing. The difference is in the type of transistor used in the sensor. These outputs have three wires with standard although counter intuitive colors. Npn and pnp are technical terms for the type of transistor used to switch the output.

Watch the video below to see the wiring of sinking and sourcing to the click plc with the 2 wire proximity switch. Am1 series sensors extended sensing distance 12mm features this proximity sensor has sink source selectable wiring models. Npn negative positive negative switching. Generally people in the united states and japan usually use npn proximity sensor while in the europe use the pnp proximity sensor.

And they can be further divided into npn type and pnp type. To connect the of the external power supply and the sensor brown wire on the. 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. Sometimes referred to as sinking the load.

2 wire pnp npn cylindrical proximity sensors and switches 6 products cylindrical proximity sensors and switches use infrared acoustic capacitative or inductive means to detect objects and will open or close the electrical circuit if the object is within a certain distance. And in dc circuit the proximity sensors used include 2 wire proximity sensor 3 wire proximity sensor and 4 wire proximity sensor. We will be wiring a capacitive proximity switch into the input of our click plc. Confusion over the normally open and normally closed function of the sensor is also a common question.

People have told me that when the npn sensor blows it has a tendency to blow in an open state. They wanted an explanation of what a sink is and how to wire one. 2 wire dc pnp 2 wire dc npn 3 wire dc pnp and 3 wire dc npn cases have been covered in this discussion. Npn and pnp refer to the transistor in the output device.

Either the load is connected to negative and the positive is switched pnp continue reading an easy way to remember pnp and npn sensor. Of the external power supply and the sensor blue wire on the module ground. Here s a simple way remember how to wire up a 3 wire dc pnp or npn sensor. Several diagrams will show a resistor attached to the blue wire and a lo.

Selectable output with a 12mm sensing distance. The ck1 00 2h is an 18mm diameter npn pnp n o n c. Npn sensors are called diving sensors because they sink at the exit. That means that the sensor can be wired as positive sourcing or negative sinking switch.

The pnp device has 2 power control leads one connected to the positive. I recently received a question on pnp and npn sensors.