SKU: SENS-1237
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Generic LJ8A3-2-Z/AY Inductive Proximity Sensor PNP NC, DC 6–36V, 2mm Detection Range

₹369.00 (Inclusive of all taxes)
Out of Stock

The LJ8A3-2-Z/AY is a cylindrical inductive proximity sensor with a PNP normally-closed (NC) output, designed for non-contact detection of metallic objects within a 2mm range. Operating on a wide 6–36V DC supply, it integrates directly into industrial control systems, PLCs, and automation setups requiring reliable object presence sensing.

Features

  • PNP Normally-Closed (NC) output configuration for direct interface with PLCs and controllers.
  • Wide operating voltage range of 6–36V DC with reverse polarity protection.
  • Precise 2mm nominal detection distance for ferrous and non-ferrous metals.
  • IP65-rated brass-nickel plated housing for durability in harsh industrial environments.
  • Non-contact sensing principle ensures long operational life and no mechanical wear.

Out of stock

Description

The LJ8A3-2-Z/AY operates on the inductive sensing principle, generating an electromagnetic field from its ABS sensing face. When a metallic object enters the 2mm detection zone, it causes a change in the oscillation amplitude, triggering the solid-state PNP output switch. This provides a reliable, wear-free alternative to mechanical limit switches.

Engineered for industrial durability, the sensor features a brass-nickel plated cylindrical body capable of withstanding oil, coolant, and particulate exposure, as certified by its IP65 ingress protection rating. Its wide voltage compatibility and built-in protection circuits ensure stable integration into 12V, 24V, or 36V DC control panels and automation systems.

Key Features

  • Industrial-Grade Construction: Brass-nickel plated housing and ABS sensing face provide excellent mechanical strength and environmental resistance.
  • Wide Voltage Compatibility: Supports 6 to 36V DC operation, making it suitable for various industrial power standards.
  • Protected Circuitry: Includes reverse connection and short-circuit protection to enhance system reliability.
  • Precision Sensing: Consistent 2mm detection distance with minimal hysteresis for repeatable object positioning.
  • High Switching Capacity: Output can sink up to 300mA, capable of driving relays, solenoids, or PLC inputs directly.
  • Easy Installation: Standard M8 threaded barrel design for simple panel or bracket mounting.

Applications

  • Machine tooling and CNC equipment for tool presence or end-of-travel detection.
  • Conveyor line automation to count, sort, or verify metal parts.
  • Robotic arm end-effector positioning and gripper object sensing.
  • Packaging machinery for detecting metal lids, cans, or foil seals.
  • Safety interlock systems on guarded machinery and access doors.

Technical Specifications

Model NumberLJ8A3-2-Z/AY
Sensor TypeInductive Proximity
Output ConfigurationPNP, Normally Closed (NC)
Operating Voltage6–36V DC
Max. Current Consumption300mA
Nominal Detection Distance (Sn)2 mm
Setting Distance (Sr)0–1.6 mm
Detection ObjectMetallic (Ferrous & Non-Ferrous)
Housing MaterialBrass-Nickel Plated
Sensing Face MaterialABS
Ingress Protection (IP)IP65
Cable Length1.2 meters
Thread SizeM8
Switching FrequencyApprox. 100 Hz (Typical)

Frequently Asked Questions

What is the difference between PNP NC and NPN NO outputs on this sensor?

The LJ8A3-2-Z/AY has a PNP (sourcing) Normally Closed (NC) output. This means the signal wire outputs positive voltage when no target is present, and switches to 0V (or common) when a metal object is detected within the 2mm range. This is the inverse logic of a Normally Open (NO) sensor and is often used for fail-safe detection circuits.

Can this sensor detect non-ferrous metals like aluminum or copper?

Yes, inductive proximity sensors can detect all conductive metals, but the effective sensing distance is reduced for non-ferrous materials. For this 2mm nominal (Sn) sensor, the actual detection range for aluminum or copper will be approximately 60-70% of the rated distance, typically around 1.2-1.4mm. Ferrous steel provides the full 2mm range.

How do I wire this 3-wire DC sensor to a PLC or microcontroller?

Connect the brown wire to your DC positive supply (6-36V), the blue wire to DC negative (0V/common), and the black wire as the PNP output signal. For a PLC digital input, connect the black wire to the input terminal. The PLC's input common must be connected to DC negative to complete the circuit. Always ensure power polarity is correct to activate the built-in reverse protection.

What does the IP65 rating mean for installation environments?

IP65 signifies the sensor is dust-tight (6) and protected against low-pressure water jets from any direction (5). This allows installation in industrial settings with airborne dust, chips, or occasional washdowns. However, it is not submersible or suitable for continuous high-pressure/high-temperature water exposure.

Package Includes

  • 1 x Inductive Proximity Sensor (LJ8A3-2-Z/AY)

Additional Information

Weight 0.15 kg
Dimensions 11 × 8 × 6 cm