Omron E3ZM-V81 5M Photoelectric Sensor
Omron E3ZM-V81 5M is a PNP diffuse-reflective mark sensor specified for sensing at a distance of 12 ±2 mm. A white LED covering 450 to 700 nm supplies the optical light used to distinguish the required mark, while the PNP output transfers the switching state to compatible PLC and machine-control circuitry. The sensing behavior is configured through the teaching sequence to suit the target mark. Operating power is 10 to 30 VDC, with maximum power consumption specified at 750 mW. A 5 m pre-wired cable provides additional routing length between the sensing position and control equipment, while response time is stated at 50 μs maximum. The E3ZM-V81 5M extends fixed PNP wiring within the short-distance mark sensor range across Omron Automation Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3ZM-V81 5M |
Omron E3ZM-V81 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective (Mark Sensor) |
| Sensing Distance | 12±2 mm |
| Light Source | White LED (450 to 700 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired 5 M Cable |
| Control Output | Load power supply voltage: 30 VDC max., Load current: 100 mA max. (Residual voltage: 2 V max.) |
| Operation Mode | Set in the order of the teaching operation. |
| Response Time | Operate or reset: 50 μs max. |
| Sensitivity Adjustment | Teaching method |
| Indicators | Operating indicator (yellow), Stability indicator (green), and Teaching indicator (red) |
| Ambient Illumination | (Receiver side) Incandescent lamp: 3,000 lx max., Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −40 to 60°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 at 50/60 Hz for 1 min |
| Vibration Resistance | 10 to 55 Hz, 1.5-mm double amplitude for 2 h each in X, Y, and Z directions |
| Shock Resistance | 500 m/s2 for 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity, Load short-circuit protection, and Reversed output polarity protection |
| Degree Of Protection | IEC 60529: IP67, DIN 40050-9: IP69K Connection method Pre-wired cable (standard length: 2 m) or |
| Material | SUS316, PMMA (polymethylmethacrylate), PES (polyethersulfone), Fluoro rubber, PVC (polyvinyl chloride) |
The Omron E3ZM-V81 5M Photoelectric Sensor provides diffuse-reflective mark sensing at a specified 12 ±2 mm distance. A white LED spanning 450 to 700 nm supplies the optical light, while the PNP output communicates the switching condition to compatible industrial control inputs. The sensor operates from 10 to 30 VDC and consumes up to 750 mW, corresponding to 25 mA maximum at a 30 V supply. Load voltage is specified up to 30 VDC with load current up to 100 mA and residual voltage of 2 V maximum. Teaching establishes the operating response, and switching takes place within 50 μs maximum. A 5 m pre-wired cable provides extended connection length, while operation, stability, and teaching indicators offer visual information during setup.
When an Omron PNP mark sensor requires more cable reach without changing the optical distance, the relevant model is the E3ZM-V81. The sensing span remains 12 ±2 mm, so the 5 m cable primarily changes installation flexibility rather than the optical specification. Operating temperature extends from -40 to 60°C, with storage down to -40°C and up to 70°C. Protection functions include reversed power-supply polarity, load short-circuit, and reversed output-polarity protection. The white LED and teaching arrangement support fast mark sensing, while the 50 μs response remains unchanged. For the same PNP configuration with a shorter 2 m pre-wired cable, see E3ZM-V81 2M.
