Pro-Range CCJ-A12-5ANA Capacitive Proximity Sensor - NPN Output, M12 Thread, 5mm Detection

The Pro-Range CCJ-A12-5ANA capacitive sensor is designed for standard industrial DC voltage supplies, typically operating within a range of 10 to 30V DC. Always ensure your power source matches this specification and observe correct polarity during connection, as the sensor includes reverse polarity protection to prevent damage from accidental miswiring.

While primarily optimized for non-metallic materials like plastics, liquids, and powders, capacitive sensors can detect conductive objects, including metals. However, the detection distance and sensitivity may vary significantly compared to dedicated inductive proximity sensors. For reliable metal detection, an inductive sensor is generally the recommended choice.

The CCJ-A12-5ANA features a built-in sensitivity adjustment potentiometer, usually located on the side or rear of the sensor housing. Use a small screwdriver to rotate this potentiometer. Turn it clockwise to increase sensitivity (detect objects from farther away or lower dielectric constant) or counter-clockwise to decrease it, which helps avoid false triggers from background objects or environmental factors.

An NPN output is a sinking transistor switch. The sensor's output wire acts as a switch to ground (0V). To interface with a PLC, connect the sensor's output wire to your PLC's digital input, and connect that same PLC input, via an internal resistor, to the positive supply voltage (e.g., +24V). When the sensor detects an object, it closes the switch, pulling the PLC input to ground, signaling a logic 'ON' state.