Omron E3ZM-V81 2M Photoelectric Sensor
Omron E3ZM-V81 2M is a PNP diffuse-reflective mark sensor designed around a specified sensing distance of 12 ±2 mm. Its white LED spans wavelengths from 450 to 700 nm, providing the optical source used for mark sensing. The PNP output communicates the switching state to compatible industrial control circuitry, while the required operating behavior is established according to the teaching sequence. The sensor operates from 10 to 30 VDC and includes a 2 m pre-wired cable for fixed electrical connection. Power consumption is specified at 750 mW maximum, equivalent to 25 mA maximum at a 30 V supply, while response time is 50 μs maximum. The E3ZM-V81 2M provides PNP fixed wiring within the diffuse-reflective mark sensor range across Omron Sensor Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3ZM-V81 2M |
Omron E3ZM-V81 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Mark Sensor (Diffuse reflective) |
| 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 2 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) |
| Weight | Approx. 85 g |
The Omron E3ZM-V81 2M Photoelectric Sensor uses diffuse-reflective mark sensing across a specified distance of 12 ±2 mm. Its white LED covers the 450 to 700 nm wavelength range, while the PNP output transfers the switching state to compatible PLC and machine-control circuitry. The output supports a load supply voltage up to 30 VDC and load current up to 100 mA, with residual voltage limited to 2 V. Sensor operation requires 10 to 30 VDC, and maximum power consumption is specified at 750 mW. The operating response is configured through the teaching sequence, while operate or reset time is 50 μs maximum. A 2 m pre-wired cable provides fixed electrical connection. Yellow, green, and red indicators provide operation, stability, and teaching information during setup.
For an Omron PNP mark sensor requiring short fixed wiring and microsecond-level response, the relevant model is the E3ZM-V81. The 12 ±2 mm sensing distance keeps the optical requirement tightly defined, while the teaching method allows the required mark response to be established during setup. Operating temperature is specified from -40 to 60°C, and the protection circuit covers reversed supply polarity, load short circuit, and reversed output polarity. SUS316, PMMA, PES, fluoro rubber, and PVC are listed among the materials. The PNP output differentiates this model electrically from the NPN V61 while retaining the same optical distance. For the same PNP model with longer fixed wiring, see E3ZM-V81 5M.
