The Omron F3SG-4SRB1680-25 is an active-production safety light curtain from the F3SG-SR series, rated for hand protection with a 25 mm detection capability. It projects 84 beams at a 20 mm pitch across a 1680 mm protective height, covering a 0.3 m to 20.0 m operating range. Supply is 24 VDC, and the enclosure carries IP65/IP67/IP67G ratings — dust-tight, waterproof, and oil-resistant.
The 25 mm detection capability and Hand protection class mean this curtain catches a human finger or hand-sized object passing through the field — it is sized for access guarding, not presence sensing alone. The 20 mm beam pitch is tight enough that a hand cannot slip between beams undetected at the rated range. Protective height of 1680 mm covers a standard machine opening up to about 1.7 m. The 0.3 m minimum range allows mounting close to the hazard; the 20 m maximum handles long conveyor or gantry perimeters without a second set of curtains. IP65/IP67/IP67G means the unit withstands hose-down washdown and temporary submersion — the IP67G variant adds oil resistance, relevant for machining centres or hydraulic press areas where coolant mist is present.
Listed as Active by the manufacturer — this is a current-catalog item, not a phase-out or last-time-buy.
Blanking and muting functions are built in, so partial beam obstruction can be tolerated for workpiece pass-through without tripping the safety output, and muting allows automatic override during material transfer cycles. Rated for -30°C to 55°C ambient — suitable for unheated warehouses or cold-chain environments at the low end, and for machine-side enclosures without active cooling at the high end.