PNP NC M8 Inductive Sensor – ALJ8A3-2-Z/P2-T

The ALJ8A3-2-Z/P2-T inductive sensor is designed for non-contact detection of metallic objects in industrial machinery, equipment and automation systems.

This model features a PNP 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 and an unshielded / non-flush mounting design

The sensor uses a 3-wire connection:

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

As a PNP NC sensor, the output is active under normal conditions and supplies positive voltage to the PLC digital input. When a metallic target enters the sensing area, the NC output switches off.

Wiring Diagram:

+12...24 VDC
     │
     └──── BROWN

0 V / GND
     │
     └──── BLUE

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

Main Specifications:

• Model: ALJ8A3-2-Z/P2-T
• Type: Inductive Proximity Sensor
• Output Type: PNP
• Output Function: NC – Normally Closed
• Power 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 Type: Unshielded / Non-Flush
• Number of Wires: 3
• Wire Colors: Brown, Blue, Black
• 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.