Pro-Range CCJ-A18-8ANA Capacitive Proximity Sensor - NPN Output, M18 Thread, 8mm Detection

The CCJ-A18-8ANA features an NPN (sinking) open-collector output. Connect the brown wire to your DC supply voltage (typically 10-30V DC), the blue wire to ground (0V), and the black wire is the switched output. The black wire will sink current to ground when a target is detected. Always connect a pull-up resistor to your PLC's input or controller if required by your system's logic.

While capacitive sensors are primarily designed for non-metallic materials like plastics, liquids, and powders, they can detect conductive objects, including metals. However, for reliable metal detection, an inductive proximity sensor is typically recommended due to its immunity to non-conductive contaminants and higher precision for metallic targets.

A small potentiometer is located on the back or side of the sensor housing. Use a small screwdriver to adjust it. Turning it clockwise increases sensitivity (detects objects further away or with lower dielectric constant), while counter-clockwise decreases it. This adjustment is crucial for tuning out background interference, setting the exact detection point, or adapting to different material types.

While the exact voltage range is not specified in the provided data, standard industrial NPN proximity sensors typically operate from 10-30V DC. It is crucial to verify the specific datasheet for the CCJ-A18-8ANA model. Ensure your power supply matches the sensor's requirements and observe correct polarity (brown to +V, blue to 0V) to avoid damage.