Omron E3JM-R4M4T Photoelectric Sensor
Omron E3JM-R4M4T is a retro-reflective photoelectric sensor with an MSR function for sensing opaque targets up to 4 m when used with the E39-R1 reflector. A 660 nm red LED creates the optical path, while the SPDT relay output supports compatible control circuits. Light-ON or Dark-ON operation can be selected, and an adjustable 0.1 to 5 s timer supports delayed switching requirements. The sensor operates from 12 to 240 VDC or 24 to 240 VAC and uses a terminal block for wiring. Within the E3JM Series, the E3JM-R4M4T provides the relay-timer configuration. Related 4 m retro-reflective sensors can be explored across Omron Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3JM-R4M4T |
Omron E3JM-R4M4T 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 | Relay |
| Connection Method | Terminal block |
| Control Output | SPDT, 250 VAC, 3A (cosφ=1) max., 5 VDC, 10 mA min. |
| Operation Mode | Light-ON Dark-ON (switch selectable) |
| Response Time | Operate or reset: 30 ms max. |
| Timer Function | Delay time: 0.1 to 5 s (adjustable) |
| 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 |
The Omron E3JM-R4M4T Photoelectric Sensor uses retro-reflective sensing with an MSR function for opaque targets across a maximum distance of 4 m when used with the E39-R1 reflector. A 660 nm red LED creates the optical path, while the SPDT relay output supports switching up to 250 VAC at 3 A under the stated resistive-load condition. The sensor accepts 12 to 240 VDC or 24 to 240 VAC and provides selectable Light-ON or Dark-ON operation. Its terminal block provides the electrical connection, while the adjustable timer covers 0.1 to 5 s. Operate or reset time is specified at 30 ms maximum, and power consumption is 2 W maximum. Incandescent-light resistance is listed at 3,000 lx.
For an Omron retro-reflective sensor requiring relay output, a 4 m sensing range, and adjustable timing, the relevant model is the E3JM-R4M4T. Operating temperature extends from -25 to 55°C, with storage from -30 to 70°C where icing and condensation are absent. The listed materials include ABS, methacrylic resin, polycarbonate, and iron. Insulation resistance is specified at 20 MΩ minimum at 500 VDC, while dielectric strength is 2,000 VAC for one minute. Its specification also suits searches for an Omron 4 m photoelectric sensor and Omron SPDT relay sensor. For applications requiring a solid-state output and a faster 5 ms response, see the E3JM-R4S4. The selectable operating mode and timer make this model suitable for object presence, position monitoring, conveyor movement, and machine sequences requiring delayed output switching.
