{"product_id":"yokogawa-duplexed-safety-control-unit-ssc50d-f2521","title":"Yokogawa Duplexed Safety Control Unit SSC50D-F2521","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-F2521 is a high-availability Safety Control Unit (SCU) serving as the logical processing engine for the Yokogawa ProSafe-RS Safety Instrumented System (SIS). Engineered for mission-critical reliability, this duplexed controller features a redundant architecture that allows for continuous operation even in the event of a hardware fault. It is specifically designed to meet the rigorous demands of SIL3 safety loops, providing a robust platform for Emergency Shutdown (ESD), Fire and Gas (F\u0026amp;G) monitoring, and Burner Management Systems (BMS).\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSSC50D-F2521\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCertified up to SIL 3 (IEC 61508 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRedundancy Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDuplexed (dual-redundant) CPU modules for fault tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Bus Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP high-speed safety communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupports high-density local and remote I\/O nodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWide-range operation from -20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Circuitry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegrated overcurrent, overvoltage, and short-circuit safeguards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSynchronization\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupports high-precision time stamping for Sequence of Events (SOE) recording\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRuggedized, compact chassis designed for vibration-prone industrial environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSafety Integrity and Operational Logic\u003c\/h3\u003e\n\u003cp\u003eThe SSC50D-F2521 differentiates itself through its \"Vnet\/IP\" safety communication capabilities, allowing for seamless integration with Centum VP Distributed Control Systems while maintaining strict safety network isolation. The duplexed design ensures that a single internal failure will not cause a nuisance trip, thereby maximizing plant uptime without compromising personnel safety. Its firmware is optimized for rapid logic execution, vital for high-speed protective functions in oil and gas, petrochemical, and power generation facilities.\u003c\/p\u003e\n\u003ch3\u003eFunctional Comparison: SSC50D vs. SSC60D\u003c\/h3\u003e\n\u003cp\u003eWhile both units support duplexed safety logic, the SSC50D-F2521 is often selected for standard rack-mount installations requiring specific Vnet\/IP connectivity, whereas the SSC60D series may offer different node capacities or specialized environmental ratings. The SSC50D-F2521 remains a staple for mid-to-large scale safety instrumented functions requiring reliable SIL3 performance.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the SSC50D-F2521 require a specific rack type for installation?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the SSC50D-F2521 is typically installed in a dedicated safety control nest or rack that provides the necessary backplane for CPU redundancy and power distribution.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this unit be used as a standalone safety controller?\u003c\/h4\u003e\n\u003cp\u003eA: While it can function as a standalone safety engine, it is most commonly integrated into a larger ProSafe-RS network to leverage centralized monitoring and diagnostic features.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51843873243448,"sku":"SSC50D-F2521","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SSC50D-F2521.jpg?v=1772243926","url":"https:\/\/www.automodulexpert.com\/products\/yokogawa-duplexed-safety-control-unit-ssc50d-f2521","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}