What this light curtain delivers
The Omron F3SG-4SRB0520-25-F is a Type 4 safety light curtain from the F3SG-SR series, built for hand protection with a 25 mm detection capability and a 20 mm beam pitch. Its 26 beams cover a 520 mm protective height, and the operating range spans 0.3 m to 20.0 m, giving flexibility for guarding access points on machinery up to that distance. Rated IP65/IP67/IP67G, the housing and optics withstand washdown environments — dust-tight, water-resistant, and oil-resistant, which suits food-and-beverage or automotive lines where high-pressure cleaning is routine. The 24 VDC supply is standard for safety circuits, and the -30°C to 55°C operating temperature covers most indoor and outdoor installations without derating.
Key features for integration
Blanking and muting functions are built in — blanking lets you disable selected beams for fixed obstructions (e.g., a conveyor frame passing through the field), while muting temporarily suspends the safety output during material transfer, avoiding nuisance trips. These are configured via the controller, not hardwired, so setup stays in software. The 25 mm detection capability means it catches fingers reaching into the hazard zone (finger-protection class per IEC 61496-1). For hand-only applications this is the standard spec; if you need arm or body detection, a coarser resolution model would be the alternative.