Omron E3Z-LL81 2M Photoelectric Sensor
Omron E3Z-LL81 2M is a distance-settable photoelectric sensor using background suppression across a specified 20 to 40 mm sensing range. Its 655 nm red laser establishes a defined optical point, while the BGS principle helps separate the intended target from surfaces positioned beyond the configured sensing position. The PNP open-collector output communicates the switching state to compatible industrial control equipment, while Light-ON or Dark-ON operation can be selected according to the required machine logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, response time at 1 ms maximum, and a five-turn endless adjuster supports accurate setting. Within the E3Z Series, the E3Z-LL81 2M provides the PNP configuration within the short-range laser sensor range across Omron Sensing Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-LL81 2M |
Omron E3Z-LL81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Distance-settable (BGS Models) |
| Sensing Distance | 20 to 40 mm |
| 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 | 30 mA max. |
| 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 | Five-turn endless adjuster |
| Indicators | Operation indicator (orange), Stability indicator (green) |
| 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, Mutual interference prevention, 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-LL81 2M Photoelectric Sensor uses distance-settable sensing with background suppression across a specified 20 to 40 mm range. Its 655 nm red laser creates a defined optical point, while the BGS principle helps separate the intended target from surfaces positioned beyond the selected sensing distance. The PNP open-collector output supports a load supply voltage up to 26.4 VDC and a load current up to 100 mA. Light-ON or Dark-ON operation can be selected according to the required machine logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, response time at 1 ms maximum, and a five-turn endless adjuster supports precise setting.
For an Omron laser sensor requiring PNP output, background suppression, and a short adjustable sensing area, the relevant model is the E3Z-LL81. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -10 to 55°C, while storage covers -25 to 70°C without icing or condensation. Reverse supply polarity, output short-circuit, mutual-interference, and reversed-output polarity protection are included. PBT and modified polyarylate resin are listed as materials. The adjustable sensing point helps separate the intended target from nearby background surfaces. Its specification also suits searches for an Omron PNP laser sensor and Omron background suppression photoelectric sensor. For the NPN version with the same supplied 20 to 40 mm range and 2 m cable, see the E3Z-LL61 2M.
