The F3SJ-A1805P20 is a through-beam safety light curtain from Omron's F3SJ-A series, guarding a 1805 mm protective height with 20 mm detection capability — finger/hand protection class per IEC 61496. The 15 mm beam pitch and 120 beams create a detection plane that catches fingers reaching into the hazard zone before contact. Operating range spans 0.2 m to 7.0 m, giving flexibility for guarding a single machine opening or a wider cell entry. Blanking and muting functions are built in, so the curtain can tolerate fixed obstructions (blanking) or be overridden during material feed cycles (muting) without requiring an external controller.
Deployment context
IP65 rating means the emitter and receiver housings withstand washdown and airborne dust — suitable for food-and-bev lines, packaging cells, and machining centers where coolant mist or hose-down cleaning is routine. 24 VDC supply is standard for safety circuits; the part draws power from a safety relay or safety PLC output. Mounting brackets and alignment aids are typically ordered separately; the curtain ships as a pair of emitter/receiver units in bulk packaging.