Omron E2EW-QX12B3T18-M1 Inductive Proximity Sensor

The Omron E2EW-QX12B3T18-M1 Inductive Proximity Sensor is engineered for reliable metal object detection in industrial automation systems where durability and stable sensing performance are essential. Featuring an M12 connector instead of a fixed cable, this model simplifies installation, maintenance, and replacement while supporting digital communication through IO-Link COM3.

Designed as part of the Omron E2EW Series, this sensor incorporates a fluororesin-coated sensing face and SUS303 stainless-steel housing to improve resistance against welding spatter, oil contamination, and mechanical wear. The combination of conventional switching outputs and IO-Link functionality enables integration into both existing PLC-based systems and modern smart manufacturing architectures.

Technical Description

The Omron E2EW-QX12B3T18-M1 Inductive Proximity Sensor is a DC three-wire inductive sensor with a 12 mm sensing distance and a quasi-flush mounting design. It provides both Normally Open and Normally Closed PNP outputs while simultaneously supporting IO-Link COM3 communication for parameterization, diagnostics, and identification.

The sensor operates from a 10–30 VDC power supply and uses a standard M12 four-pin connector, allowing quick replacement without rewiring. Its fluororesin-coated sensing surface reduces the accumulation of welding spatter, helping maintain consistent sensing performance in demanding production environments.

Operating Principle

The sensor operates using electromagnetic induction. An internal oscillator continuously generates a high-frequency electromagnetic field around the sensing face. When a conductive metallic object enters this field, eddy currents are generated within the target material. These eddy currents alter the oscillator amplitude, allowing the internal circuitry to detect the object’s presence and change the switching output.

Because the detection process is entirely contactless, there are no moving mechanical components that experience physical wear during operation. This contributes to consistent switching performance in repetitive industrial applications.

When connected to an IO-Link master, the sensor can exchange diagnostic information, device identification data, operating parameters, and maintenance information with higher-level automation systems.

Applications

The Omron E2EW-QX12B3T18-M1 Inductive Proximity Sensor is suitable for automation systems requiring dependable metal detection and simplified maintenance through connector-based installation.

• Automotive assembly lines
• Robotic welding systems
• CNC machining centers
• Material handling equipment
• Industrial conveyors
• Assembly fixtures
• Machine tool positioning
• Automated production cells

Omron E2EW-QX12B3T18-M1 Additional models can be found in the
Omron sensor products
portfolio.

Industrial Applications

The sensor is frequently installed in automated production equipment where accurate metal detection contributes to process reliability and machine synchronization. The M12 connector allows rapid replacement during scheduled maintenance while minimizing production downtime.

Automotive Production

Used for fixture confirmation, workpiece positioning, transfer system monitoring, and robotic tooling verification.

Machine Building

Supports accurate position detection of slides, actuators, and machine mechanisms operating under continuous duty cycles.

Metal Fabrication

Provides stable detection in environments exposed to coolant, oil, and welding spatter where conventional sensors may require frequent cleaning.

Advantages

• 12 mm sensing distance.
• M12 connector for simplified installation.
• IO-Link COM3 communication.
• PNP NO + NC output configuration.
• Fluororesin-coated sensing face.
• SUS303 stainless-steel housing.
• IP67 environmental protection.
• Suitable for demanding industrial environments.
• Supports predictive maintenance through digital diagnostics.

Selection Considerations

Engineers should evaluate sensing distance, available installation space, mounting method, communication requirements, connector compatibility, controller interface, environmental conditions, and required protection rating before selecting an inductive proximity sensor.

The Omron E2EW-QX12B3T18-M1 Inductive Proximity Sensor is particularly suitable where fast replacement, standardized connector wiring, and IO-Link integration are priorities.

Omron E2EW-QX12B3T18-M1 Frequently Asked Questions

1. What type of connector does this model use?

It is equipped with a standard M12 four-pin connector.

2. Does the sensor support IO-Link?

Yes. It supports IO-Link COM3 communication together with conventional switching outputs.

3. What is the sensing distance?

The nominal sensing distance is 12 mm.

4. What supply voltage is required?

The operating voltage range is 10–30 VDC.

5. Is it suitable for welding environments?

Yes. The fluororesin-coated sensing surface is designed to improve resistance against welding spatter.

6. Which industries commonly use this sensor?

Automotive manufacturing, robotics, machine building, metal processing, and factory automation are common application areas.

7. Why choose the connector version instead of the cable version?

The M12 connector simplifies replacement and maintenance without requiring rewiring.

8. What protection rating does the sensor provide?

The enclosure is rated IP67 for protection against dust and temporary water immersion under specified conditions.