Omron E3S-DBN21 Photoelectric Sensor
The Omron E3S-DBN21 Photoelectric Sensor provides NPN output and reliable retro-reflective detection with MSR function, ensuring precise 0.5 m sensing distance for transparent object detection. 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 (624 nm) light source, 30 mA current consumption, 0.5 ms response time, and a robust M12 connector, it ensures IP67 protection and dependable performance in demanding industrial environments.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-DBN21 |
Omron E3S-DBN21 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retroreflective (with MSR function) |
| Sensing Distance | 0 to 0.5 m |
| Light Source | Red LED (624 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | NPN |
| Connection Method | Connector M12 |
| Power Consumption | 720 mW max. (current consumption: 30 mA max. at power supply voltage of 24 VDC) |
| Control Output | Load power supply voltage: 30 VDC max., Load current: 100 mA max. (Residual voltage: 2 V max.) |
| Response Time | Operate or reset: 0.5 ms max. |
| Indicators | Light indicator (orange) and stability indicator (green) |
| Ambient Illumination | (Receiver side) Incandescent lamp: 3,000 lx max., Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 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 minute |
| Vibration Resistance | Destruction: 10 to 55 Hz with double amplitude of 1.5 mm 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, reversed output polarity protection, and mutual interference prevention |
| Degree Of Protection | IEC IP67, DIN 40050-9 IP69K |
| Material | Polybutylene terephthalate (PBT)/ABS, Methacrylic resin (PMMA), Polyester elastomer, Polyvinyl chloride (PVC) |
| Weight | Approx. 60 g/approx. 40 g |
The Omron E3S-DBN21 utilizes a retroreflective sensing method with MSR function to detect transparent objects such as PET bottles, glass containers, and clear film with high stability. With a sensing distance of 0 to 0.5 m and Red LED (624 nm) light source, this sensor delivers high sensitivity and accuracy in short-range detection tasks. It supports NPN output, a 0.5 ms response time, and operates on a 10 to 30 VDC supply, making it ideal for high-speed production environments.
Engineered for harsh industrial conditions, the E3S-DBN21 Photoelectric Sensor offers advanced protections including reverse polarity protection, output short-circuit protection, and mutual interference prevention. It features dual indicators—orange for operation and green for stability—to simplify on-site adjustments and diagnostics. The rugged housing is constructed from PBT/ABS and stainless steel components, ensuring resilience to mechanical shock, vibration, and exposure to water and dust. Certified with IP67 and IP69K ratings, this sensor performs reliably even in washdown applications or oily environments.
The Omron E3S-DBN21 combines compact design, industrial durability, and transparent object detection performance, making it an excellent choice for automated systems in food, beverage, and cleanroom manufacturing.
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