Omron E3Z-L81 0.5M Photoelectric Sensor
Omron E3Z-L81 0.5M is a diffuse-reflective photoelectric sensor designed for direct target sensing across a specified 20 to 300 mm range. Its 670 nm red LED directs light toward the target, while the returned optical signal is evaluated without requiring a separate reflector. The PNP output communicates the switching state to compatible PLC inputs and machine-control circuitry, while selectable Light-ON and Dark-ON operation supports different machine logic. The sensor operates from 12 to 24 VDC and includes a 0.5 m pre-wired cable for short wiring runs. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-L81 0.5M provides a PNP configuration for 300 mm diffuse sensors across Omron Industrial Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-L81 0.5M |
Omron E3Z-L81 0.5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Shape | Square type |
| Sensing Distance | 20 to 300mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired Cable, 0.5m Length |
| Current Consumption | 30 mA max. |
| Light Source (Wavelength) | Red LED (670 nm) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | 1 ms max. |
| Degree Of Protection | IEC: IP67 |
| Material | Polybutylene terephthalate (PBT) |
| Material Lens | Denatured Polyarylate |
| Features | Transparent detection |
| Weight | 65g |
The Omron E3Z-L81 0.5M Photoelectric Sensor uses diffuse-reflective sensing across a specified 20 to 300 mm working range. Its 670 nm red LED directs light toward the target, while the returned optical signal is evaluated directly by the sensor without requiring a separate reflector. The PNP output communicates the switching state to compatible PLC inputs and machine-control circuitry. 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 0.5 m pre-wired cable. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. PBT and denatured polyarylate are listed as materials for the compact square housing.
For an Omron diffuse-reflective sensor requiring PNP output and a 20 to 300 mm working range, the relevant model is the E3Z-L81. Direct target-return sensing removes the need for a separate reflector, while selectable switching logic supports different machine sequences. The 12 to 24 VDC operating range suits common industrial controls, and the supplied specification states IP67 enclosure protection. Its configuration also fits searches for an Omron 300 mm PNP sensor and Omron red LED diffuse photoelectric sensor. The short 0.5 m cable is useful where the electrical connection is positioned close to the sensing point. For the same 20 to 300 mm E3Z-L81 configuration with a longer 5 m pre-wired cable, see the E3Z-L81 5M.
