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E3S-GS3B4 Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The OMRON E3S-GS3B4 is a grooved (slot-type) photoelectric sensor from the E3S-GS series. It is designed for reliable mark detection and edge registration without requiring optical axis alignment .

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Specifications Specification Parameter / Value Sensing Method Grooved (Through-beam with slot) Sensing Distance 30 mm (fixed) Standard Sensing Object Opaque object, 6-mm dia. min. Minimum Detectable Object 3-mm dia. min. (black mark on transparent sheet) Output Configuration PNP - Dark-ON/Light-ON selectable Output Current 100 mA max. (30 VDC max.) Light Source Infrared LED (940 nm) Power Supply Voltage 12 to 24 VDC ±10% (ripple p-p: 10% max.) Current Consumption 40 mA max. Response Time 1 ms max. (Operate or reset) Sensitivity Adjustment One-turn adjuster (included) Protection Circuits Power supply reverse polarity protection, Output short-circuit protection Degree of Protection IP67 (IEC60529), NEMA 1, 4, 4X, 12, 13 Ambient Temperature (Operating) -25 to 55 °C (with no icing or condensation) Ambient Illuminance (Receiver side) Incandescent lamp: 3,000 lx max. / Sunlight: 10,000 lx max. Insulation Resistance 20 MΩ min. (at 500 VDC) Dielectric Strength 1,000 VAC at 50/60 Hz for 1 min Vibration Resistance 10 to 55 Hz, 1.5-mm double amplitude for 2 h each in X, Y and Z directions Shock Resistance 500 m/s², 3 times each in X, Y and Z directions Connection Method Pre-wired cable (standard length: 2 m) Housing Material Case: Zinc die-cast; Lens/Window: Polycarbonate Dimensions (W x H x D) 52 x 72 x 20 mm Weight (packed state) Approx. 330 g / Gross weight approx. 252 g Accessories Adjustment screwdriver, Sensitivity adjuster, Instruction sheet Agency Approvals CE, RoHS compliant