{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BB22-0SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BB22-0SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BB22-0SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BB22-0SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I Type 4 safety light curtain receiver, 14 mm resolution, 1500 mm protected height, 0 to 6 m range, PROFIsafe bus connection, order code 3SF7844-8BB22-0SS1.","salesMarkdown":"## Safety light curtain receiver — Type 4, 14 mm, PROFIsafe The Siemens 3SF7844-8BB22-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS420I family, with 14 mm resolution and a 1500 mm protected height. The 14 mm detection capability means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496-1 — making it suitable for guarding access points on assembly lines, packaging machines, and robotic cells where hand entry must be detected without allowing a full body pass-through. Operating range spans 0 to 6 m, and the unit communicates via PROFIsafe bus connection, integrating directly into a Siemens safety PLC architecture without a separate safety relay. The receiver pairs with a matching emitter (same resolution and height) to form a complete light curtain set. ## Integration notes The receiver mounts in the standard safety light curtain column profile; alignment brackets and cable glands are ordered separately per the FS420I system manual. PROFIsafe wiring uses an M12 bus connector — verify the pinout matches the safety PLC's F-host module before terminating. Blanking function is supported (noted in the description), allowing fixed or floating blanking of up to two beams for workpiece pass-through without stopping the machine. Configuration is done via the Siemens safety configuration tool (S7 F/FH systems).","metaTitle":"Siemens 3SF7844-8BB22-0SS1 Safety Light Curtain Receiver, Ty","metaDescription":"Siemens 3SF7844-8BB22-0SS1 Type 4 safety light curtain receiver, 14 mm resolution, 1500 mm height, 0-6 m range, PROFIsafe. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BB22-0SS1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SF7844-8BB22-0SS1 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request with quantity and target delivery, and we will confirm availability and current pricing at quote time."},{"question":"What is the resolution and range of this light curtain receiver?","answer":"The receiver has 14 mm resolution (finger protection per IEC 61496-1) and an operating range of 0 to 6 m, with a 1500 mm protected height."},{"question":"What communication protocol does 3SF7844-8BB22-0SS1 use?","answer":"It uses PROFIsafe bus connection, integrating directly into a Siemens safety PLC architecture without a separate safety relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BB22-0SS1","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3SF7844-8BB22-0SS1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}