Omron E3FA-RN11 2M Retro-Reflective Photoelectric Sensor

USD 26.46

M18 cylindrical retro-reflective sensor with a 4-meter sensing range and NPN output. Features a polarized red LED, M.S.R. technology, and a durable IP67/IP69K-rated ABS housing.

SKU Omron-E3FA-RN11 2M Category
Industrial Automation > Sensors > Photoelectric Sensors

Omron E3FA-RN11 2M Retro-Reflective Photoelectric Sensor

Model Identifier E3FA-RN11 2M
Official Part Number E3FA-RN11 2M
GTIN Standard 4548583440548

Technical Overview

The Omron E3FA-RN11 2M is a high-performance, M18 cylindrical retro-reflective photoelectric sensor designed for reliable detection in demanding industrial environments. It features a built-in amplifier, NPN open-collector output, and a sensing range of 0.1 to 4 meters when used with a reflector. Engineered with a polarized red LED light source (624 nm) and M.S.R. (Mirror Surface Rejection) technology, it provides highly stable detection of shiny or mirrored objects by ignoring direct reflections. The rugged ABS plastic housing with a PMMA lens carries IP67 and IP69K ratings, making it exceptionally resilient against high-pressure, high-temperature washdowns. Additional features include a fast 0.5 ms response time, high electromagnetic compatibility (EMC) protection, and a pre-wired 2-meter cable for direct integration into control systems.

Key Features

  • M18 threaded cylindrical ABS plastic housing for easy mounting
  • Retro-reflective sensing with M.S.R. (Mirror Surface Rejection) for reliable detection of shiny objects
  • Polarized high-power red LED light source (624 nm) for easy alignment
  • IP67 and IP69K ingress protection ratings for high-pressure washdown environments
  • Fast 0.5 ms maximum response time for high-speed applications
  • High electromagnetic compatibility (EMC) and ambient light immunity
  • Selectable Light-ON / Dark-ON operation mode

10 to 30 VDC power supply with 25 mA max. current consumption

Technical Specification Matrix

ParameterValue
Sensor TypeRetro-reflective with M.S.R. function
Sensing Distance0.1 to 4 m (with E39-R1S reflector)
Light SourcePolarized Red LED (624 nm)
Power Supply Voltage10 to 30 VDC
Current Consumption25 mA max.
Output TypeNPN open collector (30 VDC max, 100 mA max)
Operation ModeLight-ON / Dark-ON selectable
Response Time0.5 ms max.
Connection MethodPre-wired, 2 m cable
Degree of ProtectionIP67 / IP69K
Housing MaterialABS Plastic
Lens MaterialPMMA
Thread SizeM18
Ambient Temperature-25 to +55 °C (Operating)

Industrial Applications

1. High-Speed Packaging Line Object Detection

On rapid packaging lines, varying shapes and reflective packaging materials can cause false triggers. The sensor employs Mirror Surface Rejection (M.S.R.) technology to reliably detect shiny shrink-wrapped products or glossy cartons, preventing miscounts or jams, while its 0.5 ms response time easily handles high-throughput speeds.

Problem Solved

False triggering and unreliable detection of shiny or shrink-wrapped objects on high-speed conveyors.

M.S.R. technology0.5 ms response timeRetro-reflectiveNPN open-collector

2. Food & Beverage Washdown Conveyor Monitoring

Food processing equipment requires daily high-pressure, high-temperature cleaning that destroys standard sensors. This sensor's robust ABS housing and IP67/IP69K ingress protection allow it to survive rigorous sanitation washdowns while maintaining dependable position sensing for bottles or packaged foods.

Problem Solved

Sensor failure and liquid ingress caused by aggressive, high-pressure sanitation washdowns in wet environments.

IP69K ratingIP67 protectionABS housingPMMA lensWashdown

3. Automated Logistics and Material Handling

In automated warehouses, detecting totes and pallets across wide conveyor beds requires a long sensing range and immunity to ambient factory lighting. With a 4-meter sensing distance and high ambient light immunity (up to 10,000 lux for sunlight), this sensor provides stable presence detection for routing and sorting logistics operations.

Problem Solved

Missed tote detection across wide conveyor spans and false triggers from factory lighting or skylights.

4 m sensing distance10,000 lux sunlight immunityPolarized red LEDPre-wired 2 m cable
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