Omron E3FB-LP21 Photoelectric Sensor
Omron E3FB-LP21 is a PNP background suppression photoelectric sensor designed for fixed sensing up to 100 mm. A 624 nm red LED provides the optical source, while the BGS method helps distinguish the intended target from surfaces farther behind the selected sensing zone. The sensor operates from 10 to 30 VDC, consumes up to 25 mA, and uses an M12 connector for detachable machine wiring. Light-ON or Dark-ON operation can be selected by wiring, and the response time is specified at 0.5 ms. Within the E3FB Series, the E3FB-LP21 provides the short-range PNP connector configuration. Applications requiring stable target separation can compare PNP background suppression sensors available among Omron Automation Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3FB-LP21 |
Omron E3FB-LP21 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Background suppression |
| Sensing Distance | 100 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: 3 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 | Fixed |
| 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 | Nickel-brass, PMMA, POM, Nickel-brass |
| Weight | Approx. 50 g/ Approx. 20 g |
The Omron E3FB-LP21 Photoelectric Sensor uses background suppression sensing with a fixed 100 mm distance referenced to white paper. Its 624 nm red LED provides the sensing light, while the PNP output transfers the switching state to compatible PLC and machine-control circuitry. The sensor operates from 10 to 30 VDC with current consumption of 25 mA max. An M12 connector provides detachable machine wiring. Light-ON or Dark-ON operation can be selected by wiring, while the output supports load current up to 100 mA under the stated conditions. Response time is specified at 0.5 ms. Orange operation and green stability indicators provide status information, while nickel-brass, PMMA, and POM are among the listed materials. Environmental protection includes IP67 and IP69K.
For an Omron PNP background suppression photoelectric sensor requiring fixed 100 mm sensing and an M12 connector, the applicable model is the E3FB-LP21. Its specification also fits searches for an Omron M12 BGS sensor, Omron 100 mm photoelectric sensor, and Omron PNP photoelectric sensor. For the corresponding PNP E3FB model using the same 100 mm background suppression range with a pre-wired 2 m cable, see E3FB-LP11 2M.
