{"product_id":"yokogawa-ssc50d-f2121-duplexed-safety-control-unit","title":"Yokogawa SSC50D-F2121 Duplexed Safety Control Unit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSSC50D-F2121\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a fully duplexed safety control processor developed for the Yokogawa ProSafe-RS Safety Instrumented System (SIS). It serves as the central processing engine responsible for executing safety logic and maintaining high-integrity protection functions in critical industrial applications.\u003c\/p\u003e\n\u003cp\u003eDesigned with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual-redundant CPU architecture\u003c\/strong\u003e, the SSC50D-F2121 performs continuous cross-checking between processors to ensure fail-safe operation. In the event of a detected fault, control seamlessly transfers to the standby processor without interrupting the safety function. This architecture enables compliance with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSIL3 (IEC 61508)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequirements.\u003c\/p\u003e\n\u003cp\u003eThe controller manages both safety logic execution and network communication across\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVnet\/IP or ESB bus\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003earchitectures. Its compact, high-density form factor is optimized for modern control cabinets while maintaining thermal stability for continuous 24\/7 operation.\u003c\/p\u003e\n\u003cp\u003eAs the primary decision-making unit within the Safety Control Station (SCS), the SSC50D-F2121 delivers rapid response times essential for Emergency Shutdown (ESD) and Fire \u0026amp; Gas (F\u0026amp;G) systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSSC50D-F2121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS SIS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eFully duplexed (dual-redundant CPU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eSIL3 (IEC 61508)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Type\u003c\/td\u003e\n\u003ctd\u003eHigh-speed safety-certified microprocessors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP and ESB bus compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Capacity\u003c\/td\u003e\n\u003ctd\u003eSupports extensive safety functional blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24V DC (via node power supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e103 × 51 × 54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.0 kg \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-F2121 is widely used in high-risk industries, including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOil refineries\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOffshore gas production platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePetrochemical processing plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNuclear and conventional power generation facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTypical control applications include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEmergency Shutdown (ESD) systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFire \u0026amp; Gas (F\u0026amp;G) systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh Integrity Pressure Protection Systems (HIPPS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBurner Management Systems (BMS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts duplexed architecture ensures high availability while preventing both dangerous failures and nuisance trips.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What does “Duplexed” mean in this model?\u003c\/strong\u003e\u003cbr\u003eIt indicates two parallel processors operating simultaneously. If a fault is detected in the primary CPU, the secondary CPU assumes control instantly without disrupting the safety function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Is it compatible with Vnet\/IP networks?\u003c\/strong\u003e\u003cbr\u003eYes. The SSC50D-F2121 integrates seamlessly into Yokogawa’s Vnet\/IP safety network architecture and communicates with Safety Control Stations (SCS) and Human Interface Stations (HIS).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What does the F2121 suffix indicate?\u003c\/strong\u003e\u003cbr\u003eThe suffix typically represents specific hardware revisions or firmware versions aligned with particular ProSafe-RS software releases.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51851065295160,"sku":"SSC50D-F2121","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SNB10D-243C2UN1.jpg?v=1772590989","url":"https:\/\/www.automodulexpert.com\/products\/yokogawa-ssc50d-f2121-duplexed-safety-control-unit","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}