What the 30 mm detection capability means for guarding
The F3SJ-A0770P30 is a Type 4 safety light curtain from Omron's F3SJ-A series, designed for hand and arm protection with a 30 mm detection capability. That 30 mm figure means it catches a finger or hand reaching into the hazard zone — finger-protection class per IEC 61496-1, not just presence detection. The 31 beams at 25 mm pitch create a 770 mm protective height, sized for guarding a machine access point or a robot cell entry where a person could reach through.
Range, environment, and supply
Operating range spans 0.2 m to 9.0 m, so it works for both tight machine guarding (short-range) and wider cell perimeters. Supply is 24 VDC, standard for safety circuits.
Built-in features for production flexibility
The F3SJ-A0770P30 includes blanking and muting functions. Blanking lets you disable specific beams to allow fixed obstructions (like a fixture or conveyor rail) through the field without tripping. Muting temporarily suspends the light curtain during a material pass-through — common on palletizing cells where a load cycles through the guarded opening. These are configurable features, not add-on modules.