Pro-Range CLJ-A30M-10ANA Inductive Proximity Sensor - NPN Output, 10mm Range, M30 Thread

The CLJ-A30M-10ANA has an NPN (sinking) output. This means the signal wire acts as a switched ground. When a metal target is detected, the output transistor turns on, connecting the signal line to 0V (GND). This is the standard for many PLCs in certain regions. A PNP (sourcing) output would switch the signal line to the positive supply voltage instead.

This sensor detects conductive metals, including both ferrous (like steel and iron) and non-ferrous metals (like aluminum, brass, and copper). The exact sensing distance can vary slightly depending on the target metal's conductivity and permeability. Ferrous metals typically provide the longest detection range.

Connect the brown wire to your DC positive supply (10-30V), and the blue wire to the DC negative (0V/GND). The black wire is the NPN signal output. Connect the black wire to your PLC input or load. The load (e.g., PLC input) should then be connected back to the positive supply, completing the circuit when the sensor activates.

As a solid-state device with no moving contacts, the sensor offers an exceptionally long operational life, typically rated for tens of millions of switching cycles. The switching frequency is typically up to 100 Hz, allowing for fast detection in high-speed counting or positioning applications on production lines.