The Omron F3SJ-A1445P20 is a type-4 safety light curtain from the F3SJ-A series, built for finger and hand detection at a 20mm detection capability. That 20mm resolution means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496 — so it's the right choice for guarding access points where operators might reach through a gap smaller than a hand. The 1445mm protective height covers a full torso-height opening, and with 96 beams spaced at a 15mm pitch, the curtain leaves no blind zone between the emitter and receiver. Operating range spans 0.2m to 9.0m, which covers most machine-guarding distances from close-in press feeds to larger robotic cells. The 24VDC supply is standard for safety circuits. Built-in blanking and muting functions let the curtain ignore fixed obstructions (like a fixture jig) and automatically bypass during a material feed cycle — no external controller needed for those logic decisions. The bulk packaging means it ships as a single emitter/receiver pair, ready for DIN-rail or bracket mounting at the machine frame.
No cross-reference or second-source exists within the F3SJ-A family that matches the exact 1445mm protective height and 20mm detection — this order code is the one specified into the BOM.
Deployment context
Mounts to the machine frame via the supplied brackets or standard DIN-rail adapters. The emitter and receiver align optically with a visible red LED for setup; the 96-beam array requires a stable mounting surface to maintain alignment over the full 1445mm span. Cable routing from the M12 connectors should avoid sharp bends near the gland plate. In a safety circuit, the F3SJ-A1445P20 connects to a safety PLC or safety relay via its OSSD outputs. The blanking and muting functions are configured through the built-in DIP switches or via the optional configuration tool — no separate programming unit for basic setups.