Pro-Range CLJ-A18-8APA Inductive Proximity Sensor, Detection Distance 8mm - PNP Output, M18 Thread

The CLJ-A18-8APA has a PNP (sourcing) output. This means the signal wire (black) switches to a positive voltage (typically +24V) when a target is detected, supplying current to the load. It is wired to the PLC's digital input common (sinking). NPN (sinking) outputs switch the signal to ground. Ensure your controller's input type (sourcing vs. sinking) matches the sensor's PNP output for proper operation.

This sensor detects both ferrous (iron, steel) and non-ferrous (aluminum, copper, brass) metals. However, the effective sensing distance varies with material type. For standard steel (Fe360), the nominal range is 8mm. For aluminum, the sensing distance is typically reduced (e.g., 60-70% of the rated distance). It will not detect non-conductive materials like plastic, wood, or glass.

Connect the brown wire to the positive DC supply (10-30V), the blue wire to the negative/common (0V), and the black wire to your PLC or controller's digital input. The sensor's internal circuitry includes protection, but always ensure polarity is correct. The load (e.g., PLC input) is connected between the black signal wire and the positive supply for a PNP configuration.

Yes. With a typical response frequency up to 500 Hz, this sensor is suitable for counting metal objects on fast-moving conveyors or monitoring rotational speed. Ensure the target size and approach speed allow the object to remain within the 8mm sensing zone long enough for the sensor's response time (typically <1ms) to register a clean pulse.

For reliable operation, maintain a clearance between the sensor's sensing face and any surrounding metal (mounting bracket, machine frame) of at least 1-2 times the sensor's diameter. Side-by-side mounting of multiple M18 sensors should maintain a center-to-center distance of at least 40mm to prevent mutual interference and ensure stable detection distances.