Omron E3S-CT66 Photoelectric Sensor
The Omron E3S-CT66 Photoelectric Sensor offers Through-beam, 30 m Sensing distance, M12 Connector, Infrared LED (850 nm), 10 to 30 VDC Power supply voltage, Light-ON/Dark-ON selectable mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3S Series.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-CT66 |
Omron E3S-CT66 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 30 m |
| Light Source | Infrared LED (850 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Connection Method | M12 Connector |
| Current Consumption | 40 mA max |
| Control Output | Load power supply voltage: 30 VDC max. Load current: 100 mA max. (Residual voltage: NPN output: 1.2 V max., PNP output: 2.0 V max.) Open controller output (NPN/PNP selectable) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max |
| Sensitivity Adjustment | One-turn adjuster |
| Ambient Illumination | Incandescent lamp: 5,000 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, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 1,000 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Power supply reverse polarity circuit protection, Output short-circuit protection |
| Degree Of Protection | IEC 60529: IP67 (in-house standards: oil-resistant), NEMA: 6P (indoors only) |
The Omron E3S-CT66 is a high-performance photoelectric sensor built for industrial environments where oil exposure, long detection distances, and rugged performance are required. It features a through-beam sensing method with a separate emitter and receiver, enabling object detection at distances up to 30 meters. This setup is ideal for applications in automotive production, press machines, and material handling systems where long-range accuracy and reliability are essential.
Powered by 10 to 30 VDC (with 10% ripple), the sensor includes an M12 connector for quick, secure connection in control panels or modular systems. It supports both NPN and PNP open collector outputs, selectable to match various control requirements. The output circuit can handle load voltages up to 30 VDC with a maximum current of 100 mA. The sensor operates in both Light-ON and Dark-ON modes, selectable for logic flexibility, and responds quickly with a 1 ms max. response time.
The E3S-CT66 has a one-turn adjuster for sensitivity tuning, helping ensure reliable detection across different target reflectivity levels. It can operate under ambient lighting conditions of up to 5,000 lx (incandescent) or 10,000 lx (sunlight), making it suitable for brightly lit facilities. With a current consumption of just 40 mA max, the sensor is efficient for large-scale deployments.
Built for tough industrial use, the E3S-CT66 has an operating temperature range from −25°C to 55°C and can be stored down to −40°C. It is vibration- and shock-resistant, passing endurance tests up to 2,000 Hz and 1,000 m/s². Electrical safety features include reverse polarity and output short-circuit protection. It meets IP67 standards (IEC 60529) and NEMA 6P (indoor), with oil-resistant housing according to Omron’s in-house standards.
Compact, durable, and highly reliable, the Omron E3S-CT66 is designed to deliver consistent performance in demanding factory automation and machinery applications requiring long-range sensing and oil resistance.
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