{"product_id":"duplexed-field-control-unit-yokogawa-afs30d-h4121-centum-vp","title":"Duplexed Field Control Unit  Yokogawa AFS30D-H4121 CENTUM VP","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe AFS30D-H4121 is a high-reliability Field Control Unit (FCU) serving as the primary processing node for the Yokogawa Electric Corporation\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCENTUM VP Distributed Control System (DCS)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDesigned for mission-critical industrial environments, this unit executes complex regulatory control, sequence logic, and advanced calculation functions with deterministic timing. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAFS30D-H4121\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures a fully duplexed CPU architecture, ensuring continuous process availability even in the event of a processor-side fault.\u003c\/p\u003e\n\u003cp\u003eWith integrated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVnet\/IP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecommunication capability, it enables high-speed data exchange between control stations and human interface stations (HIS), making it a core component in stable, high-availability plant operations across oil \u0026amp; gas, petrochemical, and power industries.\u003c\/p\u003e\n\u003cp\u003eThe “H” variant includes enhanced environmental protection, making it suitable for corrosive industrial atmospheres.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDetailed Technical 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\u003eAFS30D-H4121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eCENTUM VP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPU\u003c\/td\u003e\n\u003ctd\u003eVR5432 RISC Processor, 133 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB RAM (battery-backed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Retention\u003c\/td\u003e\n\u003ctd\u003e≥72 hours (after 48-hour full charge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eFully duplexed CPU architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Interface\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP (100 Mbps), FIO bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Contact Output\u003c\/td\u003e\n\u003ctd\u003e2 terminals (NC\/Common)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e30 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFailure Logic\u003c\/td\u003e\n\u003ctd\u003eContacts open automatically upon FCU hardware fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 V DC nominal input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e100 mm × 100 mm × 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e 0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cp\u003eThe AFS30D-H4121 is deployed in large-scale automated facilities where operational continuity and system reliability are critical:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOil Refineries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eControlling distillation columns, reactor temperature loops, and blending systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Generation Plants:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eManaging turbine coordination and boiler combustion control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLNG Terminals:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHandling cryogenic storage regulation and regasification sequencing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWater \u0026amp; Wastewater Plants:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSynchronizing high-capacity pump stations and filtration processes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts duplex architecture and deterministic execution make it suitable for environments where downtime presents major safety or economic consequences.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the memory battery take to fully charge?\u003c\/strong\u003e\u003cbr\u003eThe internal backup battery requires approximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48 hours of continuous power\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto reach full charge. Once charged, it can retain memory data for up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e72 hours\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eduring a power interruption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the “H” in the model code signify?\u003c\/strong\u003e\u003cbr\u003eThe “H” designation indicates a high-reliability hardware revision, typically including\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eG3 conformal coating\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto protect against corrosive gases such as H₂S or SO₂ commonly present in harsh industrial environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this unit compatible with older V-NET systems?\u003c\/strong\u003e\u003cbr\u003eThe AFS30D-H4121 natively supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVnet\/IP\u003c\/strong\u003e. Integration with legacy coaxial V-NET systems requires a dedicated bus converter or gateway module for protocol bridging.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51854570127672,"sku":"AFS30D-H4121","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/EB511.jpg?v=1772675159","url":"https:\/\/www.automodulexpert.com\/products\/duplexed-field-control-unit-yokogawa-afs30d-h4121-centum-vp","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}