{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7228-1RC51-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7228-1RC51-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7228-1RC51-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7228-1RC51-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1200 SM 1228 failsafe digital input module, 6ES7228-1RC51-0AA0, 24 V DC, 2 interfaces, IP20, -40 to 70 °C.","salesMarkdown":"## What this module is — and why you're here The Siemens 6ES7228-1RC51-0AA0 is an SM 1228 failsafe digital input module for the S7-1200 family. It's NRND (not recommended for new designs), so the procurement angle is clear: you're filling a BOM line on an existing safety loop, not spec'ing a new one. The module runs on 24 V DC, carries 2 interfaces (backplane bus plus PROFIsafe), and is rated IP20. Supply tolerance is tight: 20.4 to 28.8 V DC — keep the bus clean. The 2 interfaces mean one for the backplane bus (power and internal comms) and one for PROFIsafe; no extra fieldbus expansion slot to juggle.","metaTitle":"Siemens 6ES7228-1RC51-0AA0 SM 1228 F-DI, NRND","metaDescription":"NRND failsafe DI module for S7-1200, 24 V DC, 2 interfaces, -40 to 70 °C. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Digital Input Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"70 mm","cULus":"Yes","Height":"100 mm","CE mark":"Yes","Weight, approx.":"210 g","lifecycle_stage":"current","Rated value (DC)":"24 V","Number of interfaces":"2","IP degree of protection":"IP20","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Operation at 25 °C without condensation, max.":"95 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$280.67","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4244e6711ca4776ca4f58c20846e85d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=486727&mlfb=6ES7228-1RC51-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7228-1RC51-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the operating temperature range?","answer":"Rated -40 to 70 °C, which covers most industrial environments including outdoor cabinets."},{"question":"How do I source this part?","answer":"Submit an RFQ. We'll quote from remaining distributor stock and surplus lots. Given NRND status, act quickly on the BOM line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7228-1RC51-0AA0","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/6ES7228-1RC51-0AA0 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}}