Omron E3S-2E4 Photoelectric Sensor
Omron E3S-2E4 is a through-beam photoelectric sensor with a built-in amplifier for object sensing across a distance of up to 2 m. Its 950 nm infrared LED establishes the optical path between separate emitter and receiver units, and the switching state changes when a target interrupts the beam. The sensor operates from 12 to 24 VDC and uses a pre-wired cable for electrical connection. Light-ON or Dark-ON operation can be selected according to the required control logic, while response time is specified at 3 ms. Within the E3S Series, the E3S-2E4 provides the 2 m through-beam option. Related 2 m through-beam sensors are available across Omron Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-2E4 |
Omron E3S-2E4 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 2 m |
| Standard Sensing Object | Opaque: 7- mm dia. min. |
| Light Source | Infrared LED (950 nm) |
| Power Supply Voltage | 12 to 24 VDC , ripple (p-p): 10% max |
| Connection Method | Pre-wired cable |
| Current Consumption | 50 mA max. (Emitter: 25 mA max., Receiver: 25 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: 3 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 IP65 |
| Material | Polybutylene terephthalate, Polycarbonate, Iron |
The Omron E3S-2E4 Photoelectric Sensor uses through-beam sensing with a built-in amplifier across a maximum distance of 2 m. A 950 nm infrared LED provides the optical source between separate emitter and receiver units, and an object changes the output state when it interrupts the beam. The sensor operates from 12 to 24 VDC and uses a pre-wired cable for electrical connection. Total current consumption is specified at 50 mA maximum, consisting of 25 mA for the emitter and 25 mA for the receiver. Output current is listed from 1.5 to 4 mA, with load current up to 80 mA. Light-ON or Dark-ON operation can be selected, while operate or reset time is specified at 3 ms maximum. Red light and green stability indicators provide visual operating information.
For an Omron through beam photoelectric sensor requiring 2 m sensing and 12 to 24 VDC operation, the relevant model is the E3S-2E4. The stated sensing target is an opaque object with a minimum diameter of 7 mm. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -25 to 55°C, while storage ranges from -40 to 70°C without icing or condensation. PBT, polycarbonate, and iron are among the listed materials. Its specification also suits searches for an Omron 2 m through beam sensor and Omron 24 VDC photoelectric sensor. For a related E3S through-beam model with the same 2 m sensing distance, see E3S-2E41.
