Omron E3S-R2E41 Photoelectric Sensor
The Omron E3S-R2E41 Photoelectric Sensor features retro-reflective detection with 0.1 to 2 m sensing range using an infrared LED (950 nm) light source for stable object detection. Operating on a 12–24 VDC power supply, it is part of the Omron automation range under the Omron Photoelectric Sensors category and the Omron E3S Series. This general-purpose sensor includes a pre-wired cable connection, 40 mA current consumption, Light-ON/Dark-ON selectable mode, 1 ms response time, and IP67 protection for dependable performance in demanding industrial environments.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-R2E41 |
Omron E3S-R2E41 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Sensing Distance | 0.1 to 2 m |
| Standard Sensing Object | Opaque: 30- mm dia. min. |
| Light Source | Infrared LED (950 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Connection Method | Pre-wired cable |
| Current Consumption | 40 mA max. |
| Control Output | Output current: 1.5 to 4 mA, Load current: 80 mA max. (residual voltage: 2 V max.) |
| Operation Mode | Light-ON/Dark-ON (selectable) |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | With an indicator |
| Indicators | Light indicator (red), Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 to 55°C, Storage: −40 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | 500 m/s2 3 times each in X, Y, and Z directions |
| Degree Of Protection | IEC IP67 |
| Material | Zinc die-cast, Polycarbonate, Iron |
The Omron E3S-R2E41 offers reliable retro-reflective detection with a sensing range of 0.1 to 2 meters, making it suitable for conveyor lines, robotic arms, and automated inspection. It uses a powerful infrared LED (950 nm) light source and operates on a 12 to 24 VDC supply. With a fast 1 ms response time and Light-ON/Dark-ON selectable modes, it supports high-speed applications while ensuring accurate detection of opaque targets ≥30 mm.
Built to withstand industrial stress, the E3S-R2E41 features vibration resistance (10–55 Hz), shock durability (500 m/s²), and operates between −25 to 55°C. The compact housing is constructed from zinc die-cast, polycarbonate, and iron, delivering a robust IP67-rated enclosure. Additional features include sensitivity adjustment with LED indicators, reverse polarity protection, and short-circuit safety. Its pre-wired cable simplifies integration into control panels and machinery.
