The Omron F3SJ-A0570P55 is a Type 4 safety light curtain from the F3SJ-A series, designed for body and leg protection at machine access points. Its 55 mm detection capability means it reliably catches a leg or torso entering the hazard zone, but it will not detect a hand or finger — that is the intended trade-off for a longer range and fewer beams to align. With a protective height of 570 mm and 12 beams spaced at 50 mm pitch, it covers a lower-body access zone typical of palletizers, packaging infeed, and assembly station perimeters. Operating range spans 0.2 m to 9.0 m, so it works across a standard conveyor aisle or machine cell without needing a secondary set of mirrors. The 24 VDC supply keeps it on the same control voltage as most safety relays and PLC safety inputs. IP65 rating means the emitter and receiver housings tolerate washdown splashes and dust — suitable for food processing or packaging lines where hose-down cleaning is routine.
Blanking and muting — what they let you do
This curtain supports blanking and muting functions. Blanking lets you disable specific beams to allow a fixed obstruction (like a machine frame or fixture) to pass through the field without tripping the safety output. Muting temporarily suspends the light curtain during a non-hazardous part of the cycle — for example, when a pallet passes through the guarded opening on a conveyor. Both features are configured through the controller, not hard-wired, which saves panel space.