Omron E3S-AT61 2M Photoelectric Sensor
The Omron E3S-AT61 2M Photoelectric Sensor is a medium sensor with built-in amplifier, through-beam vertical type offering a 7 m sensing distance and NPN output with a 2 m pre-wired cable. It operates on a 10–30 VDC power supply and is part of the Omron automation range under the Omron Photoelectric Sensors category and the Omron E3S Series. Featuring a red LED (660 nm) light source, it detects opaque objects of 10 mm dia. minimum with 0.5 ms response time, Light-ON/Dark-ON selectable mode, and IEC IP67 protection ensuring high reliability. The Emitter and Receiver consume 20 mA max. (plus 15 mA with turbo function), with a 30 VDC load voltage and 100 mA max. load current for efficient industrial performance.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-AT61 2M |
Omron E3S-AT61 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam Sensors |
| Sensing Distance | 7 m |
| Standard Sensing Object | Opaque: 10-mm dia. min. |
| Light Source | Red LED (660 nm) |
| Power Supply Voltage | 10 to 30 VDC, including ripple (p-p) 10% |
| Output Configuration | NPN |
| Connection Method | Pre-wired 2 M Cable |
| Current Consumption | Both Emitter and Receiver: 20 mA max. (plus approx. 15 mA with turbo function) |
| Control Output | Load power supply voltage: 30 VDC max., Load current: 100 mA max. (residual voltage: 1 V max.) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operation or reset: 0.5 ms max. |
| Sensitivity Adjustment | Two-turn endless adjuster with an indicator |
| Ambient Illumination | Incandescent lamp: 5,000 lx max. Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25°C to 55°C (with no icing or condensation) Storage: −40°C to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85% (with no condensation) Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC between current-carrying parts and case |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min. between current-carrying parts and case |
| Vibration Resistance | 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500m/s2, 3 times each in X, Y, and Z directions |
| Protection Circuits | Power supply reverse polarity protection, Output short-circuit protection |
| Degree Of Protection | IEC IP67; NEMA: 4X (indoors only) |
| Material | PBT, Denatured polyallylate, Stainless steel (SUS304) |
| Weight | Approx. 70 g |
The Omron E3S-AT61 2M leverages a reliable through-beam sensing method with a generous sensing distance of 7 meters, capable of detecting opaque objects as small as 10 mm in diameter. Using a Red LED (660 nm) light source, it ensures accurate detection across long ranges. Designed for stability, the sensor operates on 10 to 30 VDC with an NPN output and supports a rapid 0.5 ms response time, making it suitable for fast-paced automation applications.
The emitter and receiver each consume a modest 20 mA, with an optional turbo mode drawing slightly more power for enhanced signal reliability. Installation is simplified with a pre-wired 2-meter cable, and the Light-ON/Dark-ON selectable operation along with a two-turn endless sensitivity adjuster provides operational flexibility. Built with rugged PBT and stainless steel (SUS304), the housing resists vibration, shock, and environmental stress. With a protection rating of IP67 and compliance with NEMA 4X (indoor only), it performs reliably even in dusty or humid conditions.
Equipped with reverse polarity protection and output short-circuit protection, the Omron E3S-AT61 2M Photoelectric Sensor is a trusted component in mission-critical sensing applications.
