Omron E3S-LS3N 2M Photoelectric Sensor
Omron E3S-LS3N 2M is an NPN convergent-reflective photoelectric sensor designed for short-range object sensing from 20 to 35 mm. Its 660 nm red LED directs light toward the target area, while the returned optical signal provides the switching information within the defined working zone. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable for connection. Light-ON operation is specified, while an adjustable OFF-delay timer covers 0.1 to 1.0 s. Current consumption is 25 mA maximum and response time is specified at 1 ms. Within the E3S Series, the E3S-LS3N 2M provides the 20 to 35 mm option. Explore convergent-reflective photoelectric sensors across Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-LS3N 2M |
Omron E3S-LS3N 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Convergentreflective |
| Sensing Distance | 20 to 35 mm |
| Light Source | Red LED (660 nm) |
| Power Supply Voltage | 12 to 24 VDC, ripple (p-p) 10% max. |
| Output Configuration | NPN |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 25 mA max. |
| Control Output | Load power supply voltage: 24 VDC max., Load current: 100 mA max., |
| Operation Mode | Light-ON |
| Response Time | Operate or reset: 1 ms max. |
| Timer Function | OFF-delay range: 0.1 to 1.0 s (adjustable) |
| Ambient Illumination | Incandescent lamp: 5,000 lux max. |
| Ambient Temperature Range | Operating: −10 to 55°C (with no icing or condensation) Storage: −25 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85% (with no condensation) Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. (at 500 VDC) |
| Dielectric Strength | 1,000 VAC at 50/60 Hz for 1 minute |
| Vibration Resistance | Destruction: 10 to 55 Hz with a 1.5-mm double amplitude for 2 hrs each in X, Y and Z directions |
| Shock Resistance | Destruction: 500 m/s2, 3 times each in X, Y and Z directions |
| Protection Circuits | Power supply reverse polarity protection, Output short-circuit protection, Mutual interference prevention |
| Degree Of Protection | IEC 60529 IP40 |
| Material | ABS (Acrylonitril Butadiene Styrene, Methacrylic resin |
| Weight | Approx. 80 g |
The Omron E3S-LS3N 2M Photoelectric Sensor uses convergent-reflective sensing across a defined working range of 20 to 35 mm. Its 660 nm red LED directs light toward the target area, while the NPN output transfers the resulting switching state to compatible industrial control circuitry. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable for electrical connection. Current consumption is specified at 25 mA maximum, while load supply voltage is rated up to 24 VDC and load current up to 100 mA. Light-ON operation determines the switching logic. Operate or reset time is specified at 1 ms maximum, while an adjustable OFF-delay timer from 0.1 to 1.0 s provides additional control over the output reset sequence.
For an Omron convergent reflective photoelectric sensor requiring a narrow 20 to 35 mm working zone and NPN output, the corresponding model is the E3S-LS3N. Incandescent-light resistance is specified at 5,000 lx maximum. Operating temperature extends from -10 to 55°C, while storage ranges from -25 to 70°C without icing or condensation. Power-supply reverse polarity, output short-circuit, and mutual-interference prevention are listed. ABS and methacrylic resin are among the stated materials. Its specification also matches searches for an Omron short range NPN sensor and Omron OFF delay photoelectric sensor. For an E3S convergent-reflective model covering a wider 10 to 60 mm range, see E3S-LS3NW 2M.
