Omron E3S-DBN21 Photoelectric Sensor
Omron E3S-DBN21 is an NPN retro-reflective photoelectric sensor with an MSR function for sensing transparent objects across a range of 0 to 0.5 m. Its 624 nm red LED establishes the optical path toward the reflector, while the NPN output transfers the switching state to compatible machine-control circuitry. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable wiring. Response time is specified at 0.5 ms, while orange light and green stability indicators provide visual operating information. Load current is rated up to 100 mA. Within the E3S Series, the E3S-DBN21 provides the short-range NPN configuration. Explore transparent object photoelectric sensors across Omron Industrial Products.
| 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 |
| 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 Photoelectric Sensor uses retro-reflective sensing with an MSR function for transparent-object sensing across a range of 0 to 0.5 m. Its 624 nm red LED establishes the optical path, while the NPN output transfers the switching state to compatible machine-control circuitry. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable electrical connection. Current consumption is specified at 30 mA maximum at a 24 VDC supply, while load current is rated up to 100 mA with a maximum load supply voltage of 30 VDC. Operate or reset time is specified at 0.5 ms maximum. Orange light and green stability indicators provide visual operating information during setup and machine operation.
For an Omron NPN transparent object photoelectric sensor requiring short-range MSR sensing and M12 connection, the relevant model is the E3S-DBN21. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -25 to 60°C, while storage ranges from -40 to 70°C. Reverse power polarity, output short-circuit, output reverse-polarity protection, and mutual-interference prevention are included. Its specification also suits searches for an Omron 0.5 m transparent sensor and Omron NPN MSR sensor. For an E3S NPN transparent-object model with the same sensing range and Smart Teaching setup, see E3S-DBN22.
