The Omron F3SJ-A1140P25-TS is a Type 4 safety light curtain from the F3SJ-A series, rated for hand protection with a 25mm detection capability. Its 1140mm protective height and 57 beams at 20mm pitch cover a vertical access zone up to that height — sized for machine guarding around assembly stations, packaging lines, or robot cells where an operator needs to reach into the hazard zone but a 25mm resolution catches fingers before they reach the danger point (finger-protection class per IEC 61496-1). The 0.2m to 9.0m operating range gives flexibility for both tight machine openings and wider perimeter setups.
The 25mm detection capability means the curtain resolves an opaque object of that diameter anywhere in the sensing field — this is the standard hand-protection resolution per IEC 61496-2, not finger or body. The 1140mm protective height is the actual optically active zone; the total housing length is slightly longer for the end caps and mounting brackets. At 57 beams with a 20mm pitch, the curtain provides continuous coverage without blind spots between beams. The 24VDC supply is standard for safety circuits; confirm your safety controller or relay can source the required current for the emitter and receiver pair.
Features for the application
Built-in blanking and muting functions let the curtain ignore fixed obstructions (like a machine frame passing through the field) or temporarily suspend guarding during a workpiece pass-through — both configurable without an external controller. This reduces wiring and cabinet space compared to a basic curtain plus separate muting module.