Pro-Range CCJ-A12-5APA Capacitive Proximity Sensor - PNP Output, M12 Thread, 5mm Detection

This capacitive sensor is designed to detect non-metallic materials such as plastics, glass, liquids, powders, wood, and cardboard. It detects changes in dielectric constant, making it unsuitable for purely metallic targets, which are better served by inductive sensors.

The PNP output is a sourcing configuration. The brown wire is typically connected to the positive supply voltage (10-30V DC), the blue wire to ground (0V), and the black wire is the switched output. When a target is detected, the black wire switches to supply voltage (sourcing current) to the load connected between it and ground.

A small potentiometer is located on the back of the sensor housing. Use a small screwdriver to turn it clockwise to increase sensitivity (detect objects further away) or counter-clockwise to decrease it. Adjust while the target object is present to set the desired trigger point and avoid false detections from background objects.

The sensor operates from 10 to 30 volts DC. It has built-in reverse polarity protection, but it is still recommended to observe correct wiring. Ensure the load current does not exceed the sensor's maximum rating (typically 200mA) to prevent damage to the output transistor.