Omron E3Z-D81 2M Photoelectric Sensor
Omron E3Z-D81 2M is a diffuse-reflective photoelectric sensor for direct object sensing across a distance of up to 100 mm. Its 870 nm infrared LED sends light toward the target, allowing the returned optical signal to establish the switching state without a separate reflector. The PNP output transfers this state to compatible industrial control inputs, while selectable Light-ON and Dark-ON operation supports different 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, and response time is 1 ms maximum. Within the E3Z Series, the E3Z-D81 2M provides the PNP configuration for 100 mm diffuse sensors from Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-D81 2M |
Omron E3Z-D81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Sensing Distance | 100 mm |
| Light Source | Infrared LED (870 nm) |
| 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. Residual voltage: Load current of less than 10 mA: 1 V max. Load current of 10 to 100 mA: 2 V max. |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (orange) Stability indicator (green) Through-beam Emitter has power indicator (orange) only. |
| 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, 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), Methacrylic resin |
| Weight | Approx. 20 g |
The Omron E3Z-D81 2M Photoelectric Sensor uses diffuse-reflective sensing for direct object sensing across a specified 100 mm distance. Its 870 nm infrared LED sends light toward the target, and the returned optical signal provides the information used to establish the switching state. The PNP output supports a maximum load current of 100 mA and a load supply voltage up to 26.4 VDC. 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.
For an Omron short-range diffuse sensor requiring PNP output and direct target sensing, the relevant model is the E3Z-D81. Ambient-light resistance is specified at 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -25 to 55°C, while storage covers -40 to 70°C without icing or condensation. Reverse supply polarity, output short-circuit, mutual-interference, and reversed-output polarity protection are included. PBT and methacrylic resin are listed as construction materials. The specification also suits searches for an Omron 100 mm PNP photoelectric sensor and Omron infrared diffuse sensor. The one-turn adjuster supports sensitivity setting during machine setup. For a related 1 m PNP diffuse model with a 2 m cable, see the E3Z-D82 2M.
