This article focuses on how to wire and connect photoelectric sensors, explaining wire functions, PNP vs NPN outputs, PLC input matching, and common wiring mistakes. Whether you're an experienced engineer or new to automation, you'll find valuable insights to ensure your sensors. First, we will show you how to wire the Through-Beam photoelectric sensor emitter. Through-Beam sensors have two separate devices, one is called the emitter and the other is called the receiver. Most setups use a low voltage, typically 12-24V DC, for the sensor.
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