{"product_id":"duplexed-safety-control-unit-yokogawa-ssc50d-s2524","title":"Duplexed Safety Control Unit Yokogawa SSC50D-S2524","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-S2524 serves as the central processing core for the Yokogawa Electric Corporation\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eProSafe-RS Safety Instrumented System (SIS)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis duplexed safety control unit is engineered to execute safety-critical logic using a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efault-tolerant architecture\u003c\/strong\u003e, ensuring that a single hardware failure does not compromise process safety or overall system availability. Certified for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSIL3 applications in accordance with IEC 61508\u003c\/strong\u003e, the SSC50D-S2524 integrates seamlessly into\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVnet\/IP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrol network environments.\u003c\/p\u003e\n\u003cp\u003eIt manages I\/O modules through the safety communication bus (ESB\/Optical ESB) and executes safety loops for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEmergency Shutdown (ESD)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFire \u0026amp; Gas (F\u0026amp;G)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esystems with high-speed deterministic processing.\u003c\/p\u003e\n\u003cp\u003eDesigned for high-demand industries such as oil \u0026amp; gas, LNG, and petrochemicals, the SSC50D-S2524 forms the core of a Safety Control Station (SCS), supporting Yokogawa’s “Pair \u0026amp; Spare” redundancy philosophy to ensure continuous protection even during maintenance or internal faults.\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 Identification\u003c\/td\u003e\n\u003ctd\u003eSSC50D-S2524\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Architecture\u003c\/td\u003e\n\u003ctd\u003eDuplexed (redundant) CPUs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Network\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP (100 Mbps full duplex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003eDual redundant 24 V DC feeds (18–30 V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e45 W nominal \/ 80 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPU Memory Protection\u003c\/td\u003e\n\u003ctd\u003eECC (Error Correction Code)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Bus Interface\u003c\/td\u003e\n\u003ctd\u003eESB Bus or Optical ESB Bus supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Format\u003c\/td\u003e\n\u003ctd\u003e19-inch rack mount (6U or 9U enclosure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Management\u003c\/td\u003e\n\u003ctd\u003eForced air cooling (integrated fan units)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm (W) × 266 mm (H) × 88.1 mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e8.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication and Operational Context\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-S2524 is typically installed within a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSafety Control Station (SCS)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecabinet and functions as the primary safety logic solver for plant-wide protection systems.\u003c\/p\u003e\n\u003cp\u003eTypical deployment sectors include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eUpstream oil and gas production platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLNG liquefaction and regasification terminals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePetrochemical refineries and chemical processing complexes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower generation facilities requiring integrated ESD and F\u0026amp;G systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts duplex architecture ensures that safety functions remain continuously active, even in the event of processor-level faults or during planned maintenance activities.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the S2524 suffix represent?\u003c\/strong\u003e\u003cbr\u003eThe suffix defines the hardware revision and power configuration. The “2” indicates dual redundant power supplies, while “524” relates to the firmware generation and Vnet\/IP interface compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the duplexed architecture improve safety?\u003c\/strong\u003e\u003cbr\u003eThe SSC50D-S2524 operates two processors in parallel. Both CPUs execute identical safety logic simultaneously and continuously compare results. If any discrepancy is detected, the system isolates the faulty side and maintains operation using the healthy processor, while generating a diagnostic alarm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I upgrade an existing SSC50S to an SSC50D?\u003c\/strong\u003e\u003cbr\u003eAlthough both belong to the ProSafe-RS family, the SSC50D-S2524 is physically and logically designed for duplex operation. Upgrading from a single (S) to duplex (D) configuration typically requires hardware replacement and reconfiguration within the ProSafe-RS Engineering Station.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51854319026488,"sku":"SSC50D-S2524","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/AFF50D-H411011.jpg?v=1772502775","url":"https:\/\/www.automodulexpert.com\/products\/duplexed-safety-control-unit-yokogawa-ssc50d-s2524","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}