Omron E3JM-R4S4 Photoelectric Sensor
The Omron E3JM-R4S4 Photoelectric Sensor offers retroreflective with MSR function, providing a precise 4 m sensing distance when using the E39-R1 reflector for accurate object detection. Operating on a wide 12 to 240 VDC/24 to 240 VAC power range, it belongs to the Omron automation portfolio under the Omron Photoelectric Sensors category and the Omron E3JM Series. Equipped with a red LED (660 nm) light source, DC SSR output, terminal block connection, and PF1/2 conduit socket, it ensures fast 5 ms response, Light-ON/Dark-ON switch selection, 2 W power consumption, and robust IP66 protection for industrial environments.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3JM-R4S4 |
Omron E3JM-R4S4 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retroreflective with MSR function |
| Sensing Distance | 4 m (When using E39-R1) |
| Standard Sensing Object | Opaque: 75-mm dia. min. |
| Light Source | Red LED (660 nm) |
| Power Supply Voltage | 12 to 240 VDC, ripple (p-p): 10% max. 24 to 240 VAC, 50/60 Hz |
| Output Configuration | DC SSR |
| Connection Method | Terminal block |
| Power Consumption | 2 W max., 2 W max. |
| Control Output | 48 VDC, 100 mA max. (residual voltage: 2 V max.) |
| Operation Mode | Light-ON Dark-ON (switch selectable) |
| Response Time | Operate or reset: 5 ms max. |
| Timer Function | ON-delay/OFF-delay/One-shot delay switch selectable |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. |
| Ambient Temperature Range | Operating: −25°C to 55°C, Storage: −30°C to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 45% to 85% (with no condensation), Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 2,000 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, 100 m/s2 3 times each in X, Y, and Z directions |
| Degree Of Protection | IEC 60529: IP66 |
| Material | ABS (Acrylonitril Butadiene Styrene), Methacrylic resin, Polycarbonate, Iron |
| Weight | Approx. 160 g |
Omron E3JM-R4S4 integrates retroreflective sensing technology with a sensing distance of 4 meters (when using E39-R1), delivering accurate detection of opaque objects in dynamic manufacturing setups. This sensor operates on a wide power supply voltage range of 12 to 240 VDC and 24 to 240 VAC, ensuring broad compatibility across industrial control systems. With a DC SSR output configuration and Light-ON/Dark-ON mode selection, the sensor supports flexible response logic for varied automation requirements.
The Omron E3JM-R4S4 features a response time of just 5 milliseconds, enabling quick detection in high-speed environments. Its intelligent timer function offers ON-delay, OFF-delay, and One-shot delay modes—enhancing customizability for time-based automation tasks. Engineered with durable ABS, methacrylic resin, and polycarbonate, the sensor maintains operational reliability in harsh conditions, including temperatures from −25°C to 55°C and high-humidity zones. Certified with IP66 protection, and tested for vibration and shock resistance, this sensor thrives in demanding industrial workflows.
Trusted by engineers and integrators globally, Omron E3JM-R4S4 Photoelectric Sensor ensures accuracy, flexibility, and rugged performance on the factory floor.
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