Omron E3Z-LT81 2M Photoelectric Sensor
The Omron E3Z-LT81 2M Photoelectric Sensor offers Through-beam, 60 m Sensing distance, PNP Output, Pre-wired 2 M cable, 12 to 24 VDC Power Supply Voltage. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3Z Series and includes an Emitter (E3Z-LT81-L 2M) and Receiver (E3Z-LT81-D 2M), it utilizing a Red LD (655 nm), Laser Class 1, Light-ON/Dark-ON
mode.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-LT81 2M |
Omron E3Z-LT81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 60 m |
| Emitter Number | E3Z-LT81-L 2M |
| Receiver Number | E3Z-LT81-D 2M |
| Standard Sensing Object | Opaque: 12-mm dia. min. |
| Light Source | Red LD (655 nm), Laser Class 1 |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 35 mA (Emitter 15 mA, Receiver 20 mA) |
| Control Output | Load power supply voltage: 26.4 VDC max., Load current: 100 mA max., Open collector output |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (orange) , Stability indicator (green), Emitter for Through-bream Models has power indicator (orange) only. |
| Ambient Illumination | Incandescent lamp: 3,000 lx max., Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −10 to 55°C, Storage: −25 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no icing or condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, and Reversed output polarity protection |
| Degree Of Protection | IP67 (IEC 60529) |
| Material | PBT (polybutylene terephthalate), Modified polyarylate resin |
| Weight | Approx. 120 g |
The Omron E3Z-LT81 2M Photoelectric Sensor operates using a through-beam (emitter + receiver) configuration and offers a sensing distance of up to 60 meters with opaque targets as small as 12 mm. It utilizes a Red Laser Diode (655 nm) that complies with JIS, IEC, and FDA Class 1 laser safety standards, ensuring both performance and compliance for use in logistics, manufacturing lines, and object counting systems.
This model runs on a 12 to 24 VDC supply and features a PNP output with open collector logic. It comes pre-wired with a 2-meter cable for easy deployment and includes a 1-turn sensitivity adjuster for field tuning. The unit switches between light-ON and dark-ON modes, and provides operational feedback through orange and green status indicators. With a 1 ms response time, the sensor meets the needs of fast-paced automation environments.
With a robust housing made from PBT and modified polyarylate resin, the E3Z-LT81 2M is built to endure harsh conditions. It offers IP67 protection, withstands strong vibration and shock, and includes critical protections such as reverse polarity and short-circuit output protection.
