Omron E3Z-LS81 2M Photoelectric Sensor
Omron E3Z-LS81 2M is a distance-settable photoelectric sensor using background suppression across a specified 20 to 200 mm range. Its 670 nm red LED provides the optical source, while the PNP output communicates the switching state to compatible machine-control circuitry. The BGS arrangement helps establish the required target point while reducing the influence of surfaces positioned beyond it. Light-ON and Dark-ON operation can be selected according to the control requirement. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-LS81 2M supports the PNP background suppression sensor range across Omron Automation Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-LS81 2M |
Omron E3Z-LS81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Distance-settable |
| Sensing Distance | 20 to 200 mm (BGS setting) |
| Light Source | Red LED (670 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired, Cable Length 2M |
| Current Consumption | 30 mA max. |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | Operate or reset: 1 ms max |
| Sensitivity Adjustment | One-turn adjuster |
| 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 at 50/60 Hz for 1 minute |
| 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 for 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, Mutual interference prevention |
| Degree Of Protection | IP67 (IEC 60529) |
| Material | PBT (polybutylene terephthalate) |
| Weight | Approx. 65 g |
The Omron E3Z-LS81 2M Photoelectric Sensor provides distance-settable background-suppression sensing across a specified 20 to 200 mm range. A 670 nm red LED provides the optical source, while the PNP output communicates the switching state to compatible industrial control inputs. The sensor operates from 12 to 24 VDC and consumes up to 30 mA. Light-ON or Dark-ON operation can be selected according to the required control sequence, while operate or reset time is specified at 1 ms maximum. A one-turn adjuster supports sensing-point setup, and the 2 m pre-wired cable provides fixed electrical connection. Reversed power-supply polarity protection, output short-circuit protection, and mutual-interference prevention are included among the supplied electrical protections.
For an Omron PNP background suppression sensor requiring a 20 to 200 mm range and fixed cable wiring, the relevant model is the E3Z-LS81. Operating temperature is specified from -25 to 55°C, with storage from -40 to 70°C under the stated conditions. Ambient-light resistance reaches 3,000 lx for incandescent illumination and 10,000 lx for sunlight. PBT is listed as the housing material. Its specification also suits requirements for an Omron PNP distance sensor, Omron 200 mm BGS sensor, and pre-wired photoelectric sensor. For a related NPN version using a pre-wired 2 m cable, see E3Z-LS61 2M.
