The F3SJ-A1270P55 is an Omron F3SJ-A series safety light curtain with a 55mm detection capability, meaning it detects objects at least that diameter — sized for leg/body protection per the protection classification, not hand or finger detection. The 1270mm protective height and 26 beams at 50mm pitch cover a vertical access zone of that height; the 0.2m to 9.0m operating range gives flexibility for machine guarding across a typical cell width. IP65 rating means the emitter and receiver housings withstand hose-directed water and dust ingress — suitable for washdown environments in food processing or wet machining lines, not submersion. Supply is 24VDC, standard for safety circuits.
Deployment context
Mounts as a through-beam pair guarding a hazard zone access point — typical on press brakes, assembly stations, or robotic cells where a person entering the area must stop the machine. The blanking and muting functions (fixed blanking for a workpiece that stays in the field, muting to temporarily override the curtain for a pallet pass) are configured via the controller, not the sensor heads themselves. The 55mm detection capability means it catches a leg or torso reaching into the guarded area, but a hand or finger can pass undetected — pair with a finer-pitch curtain (14mm or 20mm) if hand protection is required.