Pro-Range CLJ-A8M-1.5APB NC PNP M8 Inductive Proximity Sensor 1.5mm Detection

This CLJ-A8M-1.5APB sensor has a PNP (sourcing) output. This means the output switch connects the signal line to the positive supply voltage when active. It is typically used with PLCs or controllers that have a common negative (sinking) input. An NPN (sinking) sensor would connect the signal to ground when active. Always verify your controller's input type for compatibility.

Normally Closed (NC) refers to the state of the output switch when no target is present. In this state, the PNP output is active (supplying voltage). When a metal target enters the 1.5mm detection range, the switch opens, and the output turns off. This logic is useful for fail-safe circuits where a signal loss indicates target presence.

This sensor detects conductive metals. It is most sensitive to ferrous metals like iron and steel, but will also detect non-ferrous metals such as aluminum, copper, and brass, though often at a slightly reduced effective sensing distance. It will not detect non-metallic materials like plastic, wood, or glass.

The sensor typically operates on a 10-30V DC supply. For a standard 3-wire PNP sensor: connect the brown wire to DC+, the blue wire to DC-, and the black wire is the PNP output signal. The output will switch to supply DC+ voltage (through the black wire) to your load (like a PLC input) when in its active state, according to its NC logic.

The detection distance is a fixed nominal value specified by the sensor's internal coil design and cannot be adjusted. For reliable operation, the target should approach the sensor face axially and be within this 1.5mm range. Ensure the target material and size meet the sensor's specifications for consistent triggering.