Omron E3Z-G81 2M Photoelectric Sensor
Omron E3Z-G81 2M is a grooved photoelectric sensor with a fixed 25 mm sensing gap for opaque targets as small as 1.5 mm in diameter. Its 940 nm infrared LED creates the optical path across the groove, while 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 output logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 25 mA maximum, while response time is 1 ms maximum. An orange operation indicator provides visual status information. Within the E3Z Series, the E3Z-G81 2M provides the PNP configuration for grooved PNP sensors across Omron Sensing Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-G81 2M |
Omron E3Z-G81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Grooved type |
| Sensing Distance | 25 mm |
| Standard Sensing Object | Opaque, 1.5-mm dia. min. |
| Light Source | Infrared LED (940 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 25 mA max. |
| Control Output | Load power supply voltage: 26.4 VDC max. Load current: 100 mA max. (Residual voltage: 1 V max.) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max. |
| Indicators | Operation indicator (orange) |
| 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 between lead wires and case |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min between lead wires and case |
| 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, and Mutual interference prevention |
| Degree Of Protection | IP64 (IEC 60529) |
| Material | ABS (Acrylonitril Butadiene Styrene) |
| Weight | Approx. 65 g |
The Omron E3Z-G81 2M Photoelectric Sensor uses grooved sensing with a fixed 25 mm gap for opaque targets as small as 1.5 mm in diameter. Its 940 nm infrared LED establishes the optical path across the groove, while the PNP output supports up to 100 mA load current and a load supply voltage up to 26.4 VDC. Light-ON or Dark-ON operation can be selected according to the required machine sequence. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 25 mA maximum, while operate or reset time is 1 ms maximum. An orange operation indicator provides visual status information during sensing.
For an Omron grooved sensor requiring PNP output and a defined 25 mm sensing gap, the relevant model is the E3Z-G81. 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, and mutual-interference protection are included. ABS is listed as the housing material, while IP64 enclosure protection is stated. The fixed groove supports repeatable small-part sensing without separate optical alignment. Its specification also matches searches for an Omron PNP slot sensor and Omron 25 mm photoelectric sensor. For a related 25 mm grooved E3Z model using NPN output and a 2 m cable, see the E3Z-G61 2M.
