Omron TL-W5MB2 2M Flat Inductive Proximity Sensor

Technical Overview

The Omron TL-W5MB2 2M is a professional-grade flat inductive proximity sensor engineered for reliable, non-contact detection of ferrous metals. Featuring a highly compact 18x10x31 mm cuboid ABS housing, it utilizes unshielded (non-flush) mounting to deliver a precise 5 mm sensing distance. Designed for demanding industrial automation environments, it operates on a standard 12-24 VDC supply voltage and outputs a PNP-NC (Normally Closed) signal through a built-in 2-meter PVC pre-wired cable. Its rugged IP67-rated enclosure ensures excellent resistance to dust and water ingress, making it highly effective for machine positioning, interlock verification, and tight-space integration.

Key Features

Ultra-compact flat cuboid design (18 x 10 x 31 mm) ideal for installations with severe space constraints.
Reliable 5 mm unshielded sensing distance optimized for ferrous metal object detection.
Industrial-standard PNP-NC (Normally Closed) output configuration for fail-safe signaling.
Rugged IP67-rated enclosure provides superior protection against dust and liquid ingress.
Durable, heat-resistant ABS plastic housing withstands harsh manufacturing environments.
Includes a flexible 2-meter pre-wired PVC cable for immediate system integration.
Wide operating voltage range of 12 to 24 VDC compatible with standard logic controllers.

Technical Specification Matrix

Parameter	Value
Sensor Type	Flat Inductive Proximity
Sensing Distance	5 mm
Output Configuration	PNP, NC (Normally Closed)
Mounting Type	Unshielded (Non-flush)
Operating Voltage	12 to 24 VDC (Ripple 10% max)
Max Load Current	50 mA at 12 VDC / 100 mA at 24 VDC
Connection Method	Pre-wired, 2 m PVC Cable
Dimensions	18 mm x 10 mm x 31 mm
Housing Material	ABS
IP Rating	IP67

Industrial Applications

1. Automated Conveyor Jam Detection and Safety Halt

Mounted directly along tight-clearance conveyor tracks, the sensor detects passing metal pallets or carriers. Its Normally Closed (NC) PNP output acts as a fail-safe continuous signal that drops out when a carrier jams in front of the sensor or if the wire is severed.

Problem Solved

Provides reliable metal detection in severely constrained profiles where standard cylindrical M12/M18 sensors physically cannot fit, while the NC logic ensures immediate system stoppage upon wire failure.

Flat inductive sensorPNP-NC output5 mm sensing distanceConveyor logic

2. CNC Machine Door Safety Interlock Verification

Integrated into the structural framing of a CNC machine enclosure, the sensor acts as an interlock by verifying the proximity of a metal door bracket. The IP67 rating protects the internal sensing coils from splashing cutting fluids and machine lubricants.

Problem Solved

Standard mechanical limit switches wear out over time; this non-contact approach eliminates mechanical degradation while securely tolerating coolant exposure due to its IP67-rated ABS body.

Machine interlockIP67 ratingABS housingNon-contact proximity

3. Robotic Arm End-Effector Payload Confirmation

Fastened to a robotic gripper arm, the lightweight flat sensor verifies when a metallic component has been fully seated into the tooling jaws before the robot initiates its high-speed transfer path.

Problem Solved

Minimizes payload weight and geometric footprint on highly dynamic robotic tooling. The built-in 2-meter flexible PVC cable allows for easy routing along the arm's joints back to the localized I/O hub.

Robotic end-effectorCompact cuboid housing2m PVC cableFerrous metal detection