Omron E3RA-DP22 Photoelectric Sensor
Omron E3RA-DP22 is a PNP diffuse-reflective photoelectric sensor designed for direct object sensing across a distance of up to 300 mm. Its 624 nm red LED sends light toward the target, while returned light provides the switching information without requiring a separate reflector. The sensor operates from 10 to 30 VDC and uses an M12 connector for detachable electrical connection. Light-ON or Dark-ON operation can be selected by wiring, and a one-turn adjuster supports sensitivity setting. Response time is specified at 0.5 ms, while load current is rated up to 100 mA. Within the E3RA Series, the E3RA-DP22 provides the 300 mm PNP connector option. Related 300 mm diffuse photoelectric sensors are available across Omron Sensing Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3RA-DP22 |
Omron E3RA-DP22 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Sensing Distance | 300 mm (white paper: 300 × 300 mm) |
| Light Source | Red LED (624 nm) |
| Power Supply Voltage | 10 to 30 VDC (include voltage ripple of 10%(p-p) max.) |
| Output Configuration | PNP |
| Connection Method | M12 Connector |
| Current Consumption | 25 mA max. |
| Control Output | Load current: 100 mA max. (Residual voltage: 2 V max.), Load power supply voltage: 30 VDC max. |
| Operation Mode | Light-ON/Dark-ON selectable by wiring |
| Response Time | 0.5 ms |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (orange) Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max./ Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: -25 to 55°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 min. between current-carrying parts and case |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude 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 | Power supply reverse polarity protection, Output short-circuit protection, and Output reverse polarity protection |
| Degree Of Protection | IEC: IP67, DIN 40050-9: IP69K |
| Material | ABS, PMMA, POM, POM |
| Weight | Approx. 20 g/ Approx. 10 g |
The Omron E3RA-DP22 Photoelectric Sensor uses diffuse-reflective sensing for direct object sensing across a maximum distance of 300 mm with a 300 × 300 mm white-paper reference target. A 624 nm red LED provides the optical source, while the PNP output transfers the switching state to compatible PLC inputs and machine-control circuitry. The sensor operates from 10 to 30 VDC and consumes up to 25 mA. An M12 connector provides detachable electrical connection, while Light-ON or Dark-ON operation can be selected by wiring. A one-turn adjuster supports sensitivity setting. Load current is specified at 100 mA maximum with a load supply voltage up to 30 VDC. Response time is 0.5 ms, while orange operation and green stability indicators provide visual status.
For an Omron PNP diffuse reflective photoelectric sensor requiring 300 mm sensing, M12 connection, and fast switching, the relevant model is the E3RA-DP22. Operating temperature extends from -25 to 55°C, while storage ranges from -40 to 70°C without icing or condensation. Power-supply reverse polarity, output short-circuit, and output reverse-polarity protection are listed. Its specification also suits searches for an Omron 300 mm PNP sensor and Omron M12 diffuse sensor. ABS, PMMA, and POM are among the listed materials. The 300 mm version suits close-range presence and position sensing where a compact M18 radial body is required. For applications requiring a longer diffuse-reflective sensing distance of up to 700 mm, see E3RA-DP23.
