2022年10月15日 · Two terms are associated with sensors (and even some loads): ‘PNP’ and ‘NPN’. The concept is closely related to I/O modules which can be listed as Sourcing or Sinking, and you must understand the relationship between the two in order to replace components properly when needed. For DC 3-wire sensors, two types exist.

In this article, you will learn the difference between PNP and NPN sensors. Also, we call them Sinking and Sourcing Sensors.

2020年3月8日 · In this article, we will discuss the application and identification of NPN sensors, clarifying why they work and how to properly use them in a control circuit setting.

Sensors often use solid-state discrete outputs to communicate, known as PNP or NPN. This blog explains what PNP and NPN are and when to use each one.

2024年5月13日 · NPN——NC常闭型：是接近开关在无信号触发时，输出与GND相同的0V低电平，即信号输出线OUT与GND（0V）电源“－”极相连；有信号触发时，信号输出线OUT与GND（0V）电源“－”极断开，相当于OUT信号输出端为空。

2024年12月22日 · Understanding the nuances of NPN vs PNP sensors is essential for the reliability and efficiency of your control systems. By knowing the differences between NPN and PNP, how they interact with plc input modules, and the implications for your wiring configurations, you can make informed decisions that enhance system performance.

2020年9月19日 · A typical control system uses PNP sensors and tends to be easier to visualize. For opposite polarity systems, the NPN sensor is the only compatible sensor type. Learn more about NPN sensors, including characteristics and uses.

2024年12月9日 · Understanding their structural differences, signal output logic, and functioning principles helps you choose the sensor type most appropriate for your project. While PNP sensors are good for uses needing direct power to the load, NPN sensors are perfect when common ground is needed.

2025年1月15日 · Among the most common types of sensors are PNP (Positive-Negative-Positive) and NPN (Negative-Positive-Negative) sensors, each excelling in specific scenarios. This article provides a clear and concise explanation of their operating principles and differences, enabling you to make informed choices for practical applications.

2020年8月11日 · NPN是指当有信号触发时，信号输出线out和0V线连接，相当于输出低电平，0V。 对于NPN-NO型，在没有信号触发时，输出线是悬空的，就是0V线和out线断开。