Omron E3ZM-R66 Photoelectric Sensor
The Omron E3ZM-R66 Photoelectric Sensor offers Retroreflective (with M.S.R. function), Background Suppression (BGS), 4 m [100 mm], 3 m [100 mm] Sensing distance, PNP Output, Connector type (M8, 4 pins), Infrared LED (870 nm), 10 to 30 VDC Power supply voltage, Light-ON/Dark-ON switch
mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3ZM Series.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3ZM-R66 |
Omron E3ZM-R66 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retroreflective (with M.S.R. function) |
| Sensing Distance | 4 m [100 mm], 3 m [100 mm] |
| Standard Sensing Object | Opaque: 75 mm dia. min. |
| Light Source | Infrared LED (870 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | Connector type (M8, 4 pins) |
| Current Consumption | 25 mA max. |
| Control Output | Load power supply voltage: 30 VDC max., Load current: 100 mA max. (Residual voltage: 2 V max.) |
| Operation Mode | Light-ON/Dark-ON switch |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (yellow), Stability indicator (green) (Emitter has only power supply indicator (green).) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight 10,000 lx max. |
| Ambient Temperature Range | Operating: -25°C to 55°C, Storage: -40°C 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 | 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, DIN 40050-9: IP69K |
| Material | SUS316, Methacrylic resin, PES (polyether sulfone), PEEK (polyether ether ketone), Fluoro rubber |
| Weight | Approx. 40 g |
The Omron E3ZM-R66 is a robust retroreflective photoelectric sensor with integrated mutual interference prevention (MSR), engineered for accurate detection of opaque objects as small as 75 mm in diameter. It delivers a reliable sensing distance of up to 4 meters using an infrared LED (870 nm) and supports a PNP output. With a 10 to 30 VDC operating range and 4-pin M8 connector, it easily integrates into a wide range of industrial control systems.
This compact industrial sensor features a one-turn sensitivity adjustment, fast 1 ms response time, and selectable Light-ON/Dark-ON operation via switch. Visual indicators for operation and stability ensure quick diagnostics, while the emitter includes a dedicated power supply indicator for additional monitoring. The sensor's protective circuitry includes reverse polarity, output short-circuit, and reversed output polarity protection—ensuring dependable performance even under continuous-duty operation in dynamic factory settings.
Housed in corrosion-resistant SUS316 stainless steel and sealed to IP67 and IP69K standards, the E3ZM-R66 withstands high-pressure washdowns, vibration, and shock. Internal components made from Methacrylic resin, PES, PEEK, and fluoro rubber further enhance durability in harsh conditions. As part of the Omron photoelectric sensor series, it’s trusted across industries including automotive, packaging, and material handling.
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