{"product_id":"ssc50d-s2521-yokogawa-dual-safety-control-unit","title":"SSC50D-S2521 Yokogawa Dual Safety Control Unit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSSC50D-S2521\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-integrity Safety Control Unit (SCU) engineered for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eProSafe-RS Safety Instrumented System (SIS)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom Yokogawa Electric Corporation.\u003c\/p\u003e\n\u003cp\u003eDesigned to meet\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSIL3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequirements in accordance with IEC 61508, this rack-mounted controller features a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual-redundant “Pair \u0026amp; Spare” architecture\u003c\/strong\u003e, where two independent processor modules execute safety logic in parallel. This structure ensures uninterrupted safety function execution even if one processor fails, minimizing nuisance trips and maximizing plant availability.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e-S2521\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evariant is optimized for seamless integration into\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVnet\/IP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003enetworks, enabling high-speed synchronization with CENTUM VP Distributed Control Systems while maintaining strict safety segregation. It serves as a cornerstone controller for protecting critical assets in high-risk industrial operations.\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\u003eItem\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-S2521\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Architecture\u003c\/td\u003e\n\u003ctd\u003eDual MIPS R5000 real-time processors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e32 MB with ECC protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 128 local safety I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Communication\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP (1 Gbps), RS-232C, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Options\u003c\/td\u003e\n\u003ctd\u003e100–120 V AC, 220–240 V AC, or 24 V DC (model dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e19-inch rack mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e483 mm × 133 mm × 451 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eIndustrial Application Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-S2521 is widely deployed in safety-critical applications, including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEmergency Shutdown Systems (ESD)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFire \u0026amp; Gas Systems (FGS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBurner Management Systems (BMS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOffshore platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePetrochemical and refining complexes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNuclear and conventional power generation plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts deterministic execution and redundant architecture make it ideal for environments where safety logic continuity is mandatory.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the SSC50D-S2521 support online hardware replacement?\u003c\/strong\u003e\u003cbr\u003eYes. Thanks to its dual-redundant processor design, a faulty module can be replaced online without interrupting active safety functions or forcing a plant shutdown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SSC50D-S2521 integrate with an existing DCS?\u003c\/strong\u003e\u003cbr\u003eIt connects directly to the Vnet\/IP network and operates as a native safety node. Process data can be shared with CENTUM VP workstations for unified monitoring while preserving physical and logical safety separation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the “S2521” suffix indicate?\u003c\/strong\u003e\u003cbr\u003eThe -S2521 suffix defines specific configuration details such as power supply type, mounting specification, and firmware revision compatibility, ensuring correct alignment with existing system architecture.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51799345955128,"sku":"SSC50D-S2521","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SSC50D-S2521.jpg?v=1771037170","url":"https:\/\/www.automodulexpert.com\/tr\/products\/ssc50d-s2521-yokogawa-dual-safety-control-unit","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}