Omron E3RB-DN22 Photoelectric Sensor
Omron E3RB-DN22 is an NPN diffuse-reflective photoelectric sensor for direct object sensing across a distance of up to 300 mm. A red LED directs light toward the target, and returned light provides the sensing information required for switching without a separate reflector. The sensor operates from 10 to 30 VDC and provides an NPN output for compatible industrial control circuitry. Its M12 connector supports detachable wiring, while selectable Light-ON or Dark-ON operation allows the switching state to match the control requirement. The cylindrical radial M18 body measures approximately 61 mm in length and uses nickel-plated brass. Within the E3RB Series, the E3RB-DN22 provides the connector-based NPN configuration. Related NPN diffuse photoelectric sensors can be reviewed across Omron Automation Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3RB-DN22 |
Omron E3RB-DN22 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Shape | Cylindrical radial |
| Sensing Distance | 300 mm |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | NPN |
| Connection Method | M12 Connector |
| Light Source (Wavelength) | Red LED |
| Thread Size | M18 |
| Length | 61 mm |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 0.5ms |
| Degree Of Protection | IP67/IP69K |
| Material Housing | Brass, nickel plated |
The Omron E3RB-DN22 Photoelectric Sensor uses diffuse-reflective sensing in a cylindrical radial format for direct object sensing across a distance of up to 300 mm. Its red LED directs light toward the target, while returned light provides the sensing information required to switch the NPN output. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable electrical connection. Current consumption is specified at 25 mA maximum, while Light-ON or Dark-ON operation supports different machine-control requirements. Response time is listed at 0.5 ms. The M18 cylindrical body measures approximately 61 mm in length and uses nickel-plated brass, providing a threaded metal mounting format for industrial machinery and automated equipment.
For an Omron NPN diffuse reflective photoelectric sensor requiring 300 mm sensing and an M12 connector, the corresponding model is the E3RB-DN22. Its radial optical orientation provides side-facing sensing from the cylindrical housing, while the connector format allows the cable to be disconnected separately from the sensor. IP67 and IP69K ratings are listed for the model. Its specification also suits searches for an Omron M12 NPN sensor and Omron 300 mm diffuse sensor. The 0.5 ms response supports object presence and position sensing where a quick output change is required. For a related E3RB NPN model with the same 300 mm sensing distance and a fixed 2 m pre-wired cable, see E3RB-DN12 2M.
