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Omron E3S-CT61 2M Photoelectric Sensor
The Omron E3S-CT61 2M Photoelectric Sensor offers Through-beam, 30 m Sensing distance, Pre-wired 2 M cable. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3S Series and includes an Emitter (E3S-CT61-L 2M) and Receiver (E3S-CT61-D 2M), it utilizing a Infrared LED (850 nm) Light source.
| Brand | Omron |
| Product Type | Photoelectric Sensor |
| Model Number | E3S-CT61 2M |
Omron E3S-CT61 2M Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 30 m |
| Emitter Number | E3S-CT61-L 2M |
| Receiver Number | E3S-CT61-D 2M |
| Light Source | Infrared LED (850 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Connection Method | Pre-wired 2 M cable |
| 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: β25Β°C to 55Β°C, Storage: β40Β°C to 70Β°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΞ© 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) |
| Weight | Approx. 270 g |
The Omron E3S-CT61 2M is a robust photoelectric sensor designed for long-range detection in harsh industrial environments, including areas exposed to oil, dust, or cleaning agents. Featuring a through-beam configuration with separate emitter and receiver, it enables stable object detection at distances up to 30 meters. With its infrared LED light source (850 nm), the sensor delivers precise and interference-resistant performance in applications such as automated material handling, logistics, and large machine installations.
This model supports a wide operating voltage range of 10 to 30 VDC (with 10% ripple) and offers a selectable NPN or PNP open collector output. The output circuit handles a load power supply voltage of up to 30 VDC and supports a maximum load current of 100 mA. The sensor includes built-in protection features such as power supply reverse polarity protection and output short-circuit protection, ensuring safe and reliable operation. Operating mode is selectable between Light-ON and Dark-ON for flexible logic integration.
With a fast 1 ms response time and a simple one-turn adjuster for sensitivity, the E3S-CT61 2M provides both accuracy and ease of use. Its indicators respond to incident light conditions, making setup and diagnostics faster. It withstands ambient illumination up to 5,000 lx (incandescent) and 10,000 lx (sunlight), suitable for brightly lit factory floors or open industrial areas.
Engineered for rugged use, the sensor functions in temperatures from β25Β°C to 55Β°C and handles humidity up to 85% operating and 95% in storage without condensation. The unit passes vibration resistance tests from 10 to 2,000 Hz and endures shock up to 1,000 m/sΒ² in all three axes. The housing meets the IP67 protection standard per IEC 60529, ensuring resistance to water and oil ingress in demanding conditions.
Compact, oil-resistant, and highly reliable, the Omron E3S-CT61 2M is ideal for long-range detection in automotive plants, warehouses, and heavy-duty industrial automation systems.
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