Omron E3FB-DN23 Photoelectric Sensor
Omron E3FB-DN23 is an NPN diffuse-reflective photoelectric sensor with a specified 1000 mm sensing distance and an M12 connector. A red LED supplies the optical source, allowing the sensor to respond to light reflected directly from the target without a separate reflector. Operating voltage is 10 to 30 VDC, and current consumption is specified at 25 mA max. Light-ON or Dark-ON operation can be selected according to the required machine logic, while response time is 0.5 ms. The M18 cylindrical body uses nickel-plated brass and has a stated length of 48 mm. Within the E3FB Series, the E3FB-DN23 provides the longer connector-based NPN option. Extended direct-sensing applications can use 1000 mm diffuse photoelectric sensors from the Omron Sensor Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3FB-DN23 |
Omron E3FB-DN23 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse reflective |
| Shape | Cylindrical axial |
| Sensing Distance | 1000 mm |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | NPN |
| Connection Method | M12 Connector |
| Light Source (Wavelength) | Red LED |
| Thread Size | M18 |
| Length | 48 mm |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 0.5ms |
| Degree Of Protection | IP67/IP69K |
| Material Housing | Brass, nickel plated |
The Omron E3FB-DN23 Photoelectric Sensor uses diffuse-reflective sensing in an M18 cylindrical axial body with a specified sensing distance of 1000 mm. Its red LED sends light toward the target, and the returned optical signal is evaluated directly without a separate reflector or receiving unit. The NPN output communicates the switching state to compatible PLC inputs and control circuitry. Light-ON or Dark-ON operation can be selected to suit the required machine sequence. The sensor operates from 10 to 30 VDC and consumes 25 mA max. An M12 connector provides detachable electrical wiring, helping simplify replacement where the cable remains installed on the machine. Response time is specified at 0.5 ms. The nickel-plated brass body has an M18 threaded format, measures 48 mm in length, and carries IP67 and IP69K enclosure ratings.
For an Omron 1000 mm diffuse photoelectric sensor requiring NPN output and M12 connection, the relevant model is the E3FB-DN23. Its longer sensing distance extends direct target sensing beyond the shorter E3FB diffuse variants while retaining a compact cylindrical mounting arrangement. A visible red LED assists during positioning, while selectable Light-ON or Dark-ON operation provides flexibility for different switching sequences. Its configuration also suits searches for an Omron NPN long-range sensor and Omron M12 photoelectric sensor. For a related NPN E3FB model offering up to 1 m diffuse sensing with a pre-wired 2 m cable and one-turn sensitivity adjuster, see E3FB-DN13 2M.
