Omron E3FB-DP21 Photoelectric Sensor
Omron E3FB-DP21 is a PNP diffuse-reflective photoelectric sensor intended for short-range object sensing up to 100 mm. Its red LED sends light toward the target, and the returned optical signal is used to determine object presence without requiring a separate reflector. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable machine wiring. Light-ON and Dark-ON modes can be selected to suit the required control sequence, while the specified response time is 0.5 ms. Within the E3FB Series, the E3FB-DP21 provides the connector-based PNP configuration. Compact applications requiring short sensing distance can review 100 mm diffuse photoelectric sensors available through Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3FB-DP21 |
Omron E3FB-DP21 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-Reflective |
| Sensing Distance | 100 mm |
| Light Source | Red LED |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | M12 Connector |
| Current Consumption | 25 mA max. |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 0.5 ms |
| Degree Of Protection | IP67/IP69K |
| Material | Brass, nickel plated |
The Omron E3FB-DP21 Photoelectric Sensor uses diffuse-reflective sensing for direct object sensing within a 100 mm distance. A red LED supplies the optical light, while the returned reflection from the target is evaluated to change the PNP output state. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable machine wiring. Current consumption is specified at 25 mA max. Light-ON or Dark-ON operation can be selected according to PLC logic, and the 0.5 ms response time supports rapid switching on conveyors and automated machinery. The M18 cylindrical metal housing provides threaded mounting, while IP67 and IP69K ratings support installation where moisture, dust, or high-pressure cleaning may be present.
For an Omron short-range diffuse photoelectric sensor requiring PNP output, an M12 connector, and 100 mm sensing, the corresponding model is the E3FB-DP21. The specification also fits searches for an Omron 100 mm photoelectric sensor, Omron M12 diffuse sensor, and Omron PNP photoelectric sensor. For the corresponding PNP E3FB model using the same 100 mm sensing range with a pre-wired 2 m cable, see E3FB-DP11 2M.
