{"product_id":"duplexed-safety-control-unit-yokogawa-ssc50d-s2121-s1","title":"Duplexed Safety Control Unit Yokogawa SSC50D-S2121 S1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSSC50D-S2121 S1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-availability Duplexed Safety Control Unit within the Yokogawa ProSafe-RS platform.\u003c\/p\u003e\n\u003cp\u003eEngineered to meet\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSIL3 (Safety Integrity Level 3)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequirements, this unit provides a fully redundant processor architecture to ensure uninterrupted safety control even in the event of a single hardware failure.\u003c\/p\u003e\n\u003cp\u003eThe duplexed configuration consists of synchronized processor modules executing identical safety logic in parallel. This architecture makes the SSC50D-S2121 S1 a core component in:\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\u003eCritical interlock applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe S2121 configuration represents a specialized hardware build optimized for seamless installation into ProSafe-RS nests. With advanced self-diagnostics and high-speed safety bus communication, the unit prioritizes fail-safe operation and maximum system uptime in hazardous industrial environments.\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 Identifier\u003c\/td\u003e\n\u003ctd\u003eSSC50D-S2121 S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eSIL3 certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Configuration\u003c\/td\u003e\n\u003ctd\u003eDuplexed (dual-redundant processors)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Series\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS SIS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Architecture\u003c\/td\u003e\n\u003ctd\u003eSynchronized dual-execution safety logic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP safety bus compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Management\u003c\/td\u003e\n\u003ctd\u003eSupports redundant power input feeds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eInternal self-testing with fault reporting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Dimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e10.3 cm × 5.1 cm × 5.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit Weight\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 Environments\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-S2121 S1 is widely deployed in high-risk and high-consequence industries, including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eLNG terminals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOffshore oil and gas 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\u003eComplex chemical reactor systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower generation safety systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt manages safety-critical logic where failure could result in significant environmental damage, equipment loss, or risk to personnel.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the duplexed functionality improve safety?\u003c\/strong\u003e\u003cbr\u003eTwo processors execute identical safety logic simultaneously. Continuous cross-checking ensures that if a fault or mismatch is detected in one processor, the healthy unit maintains control without interrupting the safety loop. This architecture minimizes nuisance trips while maintaining full protective coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the SSC50D-S2121 S1 compatible with Centum VP?\u003c\/strong\u003e\u003cbr\u003eYes. The unit integrates with Yokogawa CENTUM VP through the unified Vnet\/IP network, enabling Integrated Control and Safety (ICAS) architecture while preserving the physical and logical independence required for safety functions.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51833818218808,"sku":"SSC50D-S2121 S1","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SSC50D-S2121_S1.jpg?v=1772070832","url":"https:\/\/www.automodulexpert.com\/products\/duplexed-safety-control-unit-yokogawa-ssc50d-s2121-s1","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}