Omron E3Z-L81 2M Photoelectric Sensor
Omron E3Z-L81 2M is a narrow-beam diffuse-reflective photoelectric sensor designed around a specified 90 ±30 mm sensing distance. Its 650 nm red LED produces a focused optical path toward the target, supporting sensing where a narrower working area is required. The PNP output communicates the switching state to compatible industrial control circuitry, 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 one-turn adjuster supports sensitivity setting. Within the E3Z Series, the E3Z-L81 2M provides focused PNP sensing within the narrow-beam sensor range across Omron Automation Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-L81 2M |
Omron E3Z-L81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Sensing Distance | 90±30 mm (narrow beam) |
| Light Source | Red LED (650 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, Some connector models: −40°C to 55°C * (with no icing or condensation) 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 | 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 | IEC, IP67 |
| Material | PBT (polybutylene terephthalate) |
| Weight | Approx. 65 g |
The Omron E3Z-L81 2M Photoelectric Sensor uses narrow-beam diffuse-reflective sensing around a specified 90 ±30 mm working distance. Its 650 nm red LED produces a focused optical path toward the target, while returned light establishes the switching state without requiring a separate reflector. The PNP output communicates this state to compatible industrial control circuitry, while Light-ON or Dark-ON operation can be selected according to the required 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, operate or reset time is 1 ms maximum, and a one-turn adjuster supports sensitivity setting. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight.
For an Omron narrow-beam diffuse sensor requiring PNP output and fixed cable wiring, the relevant model is the E3Z-L81. Operating temperature extends from -25 to 55°C, while storage covers -40 to 70°C without icing or condensation. Insulation resistance is specified at 20 MΩ minimum at 500 VDC, while dielectric strength is 1,000 VAC for one minute. Reverse supply polarity, output short-circuit, mutual-interference, and reversed-output polarity protection are included. PBT is listed as the housing material. Its focused optical arrangement also suits searches for an Omron PNP narrow-beam sensor and Omron pre-wired photoelectric sensor. For an M8-connected PNP model using the same 90 ±30 mm working distance, see the E3Z-L86.
