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E3FA-LP21 Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The Omron E3FA-LP21 is a high-performance photoelectric sensor from the E3FA Series, housed in a durable M18 threaded cylindrical plastic (ABS) body. It utilizes a Background Suppression (BGS) sensing method , which ensures stable detection of objects regardless of their color or surface reflectivity by sensing only within a defined distance from the sensor.

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Key Technical Specifications Parameter Specification Series E3FA Sensor Type Photoelectric Sensor (Background Suppression / BGS) Housing Material ABS Plastic Housing Diameter M18 threaded cylindrical (M18 x 1) Sensing Method Background Suppression (BGS) Sensing Distance 100 mm (3.937") Standard Sensing Object White paper (300 x 300 mm) Light Source Red LED (624 nm, Polarity free red light) Output Configuration PNP - Open collector Output Operation Light-ON / Dark-ON selectable (via wiring) Max. Output Current 100 mA Supply Voltage 10 to 30 VDC Current Consumption 25 mA max. Response Time 0.5 ms (500 µs) max. Switching Frequency 2,000 Hz (2 kHz) Connection Method M12 Connector (4-pin, male) Degree of Protection (IP) IP67, IP69K (IEC60529, DIN40050-9) Operating Temperature -25°C to 55°C Storage Temperature -40°C to 70°C Operating Humidity 35% to 85% RH Ambient Illumination Incandescent lamp: 3,000 lx max. / Sunlight: 10,000 lx max. Vibration Resistance 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, Z directions Shock Resistance 500 m/s², 3 times each in X, Y, Z directions Insulation Resistance 20 MΩ min. (at 500 VDC) Dielectric Strength 1,000 VAC at 50/60 Hz for 1 min Protection Circuits Output short-circuit protection, Output reverse polarity protection, Power supply reverse polarity protection Indicators Operation indicator (orange), Stability indicator (green) Sensitivity Adjustment Single-turn adjustment Material (Lens) Methacrylate resin (PMMA) Body Length 45 mm Body Diameter 18 mm (M18 thread) Weight Approx. 10-21 g