Omron E3T-SL23 2M Photoelectric Sensor
The Omron E3T-SL23 2M Photoelectric Sensor features an ultracompact body with built-in amplifier, providing limited reflective detection and a 5–30 mm sensing range using a red LED (650 nm) light source. Operating on a 12–24 VDC supply, it delivers PNP output and comes with a pre-wired 2 m cable for easy installation. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3T Series. It offers Light-ON operation, 20 mA current consumption, open-collector control output, 1 ms response time, and IP67 protection for reliable industrial performance.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SL23 2M |
Omron E3T-SL23 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Limitedreflective |
| Sensing Distance | 5 to 30 mm (50 × 50 mm white paper) |
| Standard Sensing Object | 0.15-mm dia. (sensing distance 10 mm) |
| Light Source | Red LED (650 nm) |
| Power Supply Voltage | 12 to 24 VDC , ripple (p-p) 10% max. |
| Output Configuration | PNP |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 20 mA max. |
| Control Output | Load power supply voltage: 26.4 VDC max. Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current of less than 10 mA) Open-collector output |
| Operation Mode | Light-ON |
| Response Time | Operate or reset: 1 ms max. |
| Indicators | Operation indicator (orange), Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 5,000 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 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each in X, Y, and Z directions |
| Shock Resistance | 1,000m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Power supply and control output reverse polarity protection, Output short-circuit protection, Mutual interference prevention |
| Degree Of Protection | IEC 60529 IP67 |
| Material | PBT (polybutylene terephthalate), Denatured polyarylate |
| Weight | Approx. 20 g |
The Omron E3T-SL23 2M uses a red LED light source (650 nm) with limited reflective sensing to detect objects within a range of 5 to 30 mm. It’s capable of identifying targets as small as 0.15 mm in diameter at 10 mm distance. Powered by a 12 to 24 VDC supply, this model delivers fast response with a 1 ms operating speed, making it ideal for high-speed sorting, positioning, and inspection processes. It comes with a PNP open-collector output and operates in Light-ON mode.
With a power consumption of only 20 mA, the sensor supports energy-efficient systems. It includes a 2-meter pre-wired cable for simple integration into control panels. Status feedback is available through orange operation and green stability indicators. The unit incorporates reverse polarity protection and short-circuit protection, ensuring robust performance even in fluctuating voltage environments.
Encased in high-strength PBT and denatured polyarylate material, the Omron E3T-SL23 2M Photoelectric Sensor is built for industrial durability. It’s rated IP67 according to IEC 60529, withstanding water, dust, shock up to 1,000 m/s², and vibration up to 2,000 Hz. Weighing just 20 g, it’s perfectly suited for use in dynamic and space-limited environments.
