NPN NC Inductive Sensor – ALJ8A3-2-Z/N2-T

The ALJ8A3-2-Z/N2-T inductive sensor is designed for non-contact detection of metallic objects in industrial machinery and automation systems.

This model features an NPN NC (Normally Closed) output, operates on 12–24 VDC, and provides a nominal sensing distance of Sn: 2 mm ±10%. It has an M8 × 1 housing with Unshielded / Non-Flush installation

The sensor uses a 3-wire connection:

• Brown: +12–24 VDC
• Blue: 0 V / GND
• Black: NPN NC output

Wiring Diagram:

+12...24 VDC
     │
     └──── BROWN

0 V / GND
     │
     └──── BLUE

NPN NC Output
     │
     └──── BLACK ─────> PLC Digital Input

For an NPN sensor, the PLC input should be configured for a compatible sinking-output sensor.

Main Specifications:

• Model: ALJ8A3-2-Z/N2-T
• Type: Inductive Proximity Sensor
• Output Type: NPN
• Output Function: NC – Normally Closed
• Rated Supply: 12–24 VDC
• Permissible Supply Range: 6–36 VDC
• Sensing Distance: Sn: 2 mm ±10%
• Setting Distance: 0–2.2 mm
• Housing / Thread: M8 × 1
• Installation: Unshielded / Non-Flush
• Number of Wires: 3
• Wire Colors: Brown, Blue, Black
• Detection Object: metallic objects
• Standard Target: SPCC iron 8 × 8 × 1 mm
• Response Frequency: 1 kHz
• Current Consumption: ≤13 mA
• Control Output: ≤200 mA
• Operating Temperature: -30 to +65 °C
• Protection Rating: IP67
• Housing Material: Nickel-plated brass
• Detection Surface: ABS
• Reverse polarity, surge and load short-circuit protection

Typical Applications: metal part detection, positioning, electronic limit sensing, object counting, packaging machines, conveyor systems, production machinery and PLC-based industrial automation.