{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF7844-8BD22-0SS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF7844-8BD22-0SS1","canonicalUrl":"https://aoctrl.com/siemens/3SF7844-8BD22-0SS1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF7844-8BD22-0SS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC FS420I, Type 4 safety light curtain receiver, 30 mm resolution, 1500 mm protected height, blanking, 0 to 18 m range, Profisafe bus connection, order code 3SF7844-8BD22-0SS1.","salesMarkdown":"## Type 4 receiver with blanking and Profisafe integration The Siemens 3SF7844-8BD22-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS420I series, rated for finger and hand detection with a 30 mm resolution over a 1500 mm protected height. The blanking function allows fixed or floating objects within the field to be masked, so the curtain guards the hazard zone without nuisance tripping on workpiece or fixture protrusions. Profisafe bus connection means it integrates directly into a safety-rated PROFINET network, eliminating the need for a separate safety relay or interface module in most Siemens-based safety architectures. ## Deployment context The 0 to 18 m operating range suits it for guarding large press brakes, robotic cells, or conveyor in-feed zones where the transmitter and receiver are mounted several meters apart. The Type 4 classification (SIL 3, PL e per IEC 61496-1) means it is certified for use in safety circuits where a failure must not lead to loss of the safety function.","metaTitle":"Siemens 3SF7844-8BD22-0SS1 Safety Light Curtain Receiver, Ty","metaDescription":"Siemens 3SF7844-8BD22-0SS1 Type 4 safety light curtain receiver, 30 mm resolution, 1500 mm height, blanking, 0-18 m range, Profisafe. Current lifecycle. Quoted to order.","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/3SF7844-8BD22-0SS1/alternatives.json"},"ai":{"faq":[{"question":"What is the resolution and protected height of this light curtain?","answer":"It has a 30 mm resolution (finger/hand detection) and a 1500 mm protected height, with a 0 to 18 m operating range."},{"question":"Does this receiver support blanking?","answer":"Yes, the blanking function is built in, allowing fixed or floating objects to be masked within the detection field."},{"question":"What bus protocol does this receiver use?","answer":"It connects via Profisafe bus, integrating directly into a safety-rated PROFINET network without a separate safety relay."},{"question":"Where can I buy 3SF7844-8BD22-0SS1 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF7844-8BD22-0SS1","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/3SF7844-8BD22-0SS1 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}}