{"product_id":"yokogawa-afs30d-h4121-centum-vp-duplex-field-control-unit","title":"Yokogawa AFS30D-H4121 CENTUM VP Duplex Field Control Unit","description":"\u003ch2\u003eYOKOGAWA AFS30D-H4121 Duplex Field Control Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA AFS30D-H4121\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAFS30D\u003c\/strong\u003e Duplex Field Control Unit, operates as a dedicated hardware component for real-time control logic execution and deterministic ethernet data exchange within CENTUM VP distributed control systems. Powered by a 133 MHz RISC processor, the chassis processes 32 MB of battery-backed instruction memory to execute continuous control loops, sequence logic, and network communications with Human Interface Stations (HIS). The unit manages dual V-net\/IP interfaces and dual ESB bus routing paths to maintain uninterrupted operation across remote subsystem connections.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eAFS30D-H4121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e207 x 265.9 x 482.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e80 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Engine\u003c\/td\u003e\n\u003ctd\u003e133 MHz RISC Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Memory\u003c\/td\u003e\n\u003ctd\u003e32 MB with battery retention backup up to 72 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Cycle Timing\u003c\/td\u003e\n\u003ctd\u003eMinimum 100 ms (Typical execution cycle 200 ms to 1 s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Point Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 8 NIU nodes \/ Max 256 I\/O points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eDual 10BASE-T \/ 100BASE-TX Ethernet, dual V-net\/IP, dual ESB bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Protocols\u003c\/td\u003e\n\u003ctd\u003eTCP\/IP, UDP, V-net\/IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Redundancy\u003c\/td\u003e\n\u003ctd\u003eDual CPUs, dual 24 VDC power modules, dual V-net\/IP, dual ESB bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitchover Failover Latency\u003c\/td\u003e\n\u003ctd\u003eLess than or equal to 10 ms seamless transfer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Input\u003c\/td\u003e\n\u003ctd\u003e24 VDC (+10% \/ -10% input tolerance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH (Non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety \u0026amp; Ingress Ratings\u003c\/td\u003e\n\u003ctd\u003eSIL2 safety compliance, CE, UL, CSA, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Isolation and Fault Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module incorporates redundant hardware execution planes to maintain uninterrupted processing for analog and digital control loops. Communication interface lines utilize high-grade channel-to-channel isolation circuits to prevent high-voltage electrical noise from propagating to internal system memory during transient field events. The architecture handles data synchronization over V-net\/IP while concurrently routing analog variables over the 4-20 mA HART loop protocol framework, ensuring that real-time process monitoring continues during field bus state changes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What mechanisms guarantee sub-10 ms CPU failover during a processor hardware fault?\u003c\/p\u003e\n\u003cp\u003eA: The primary and secondary VR5432 RISC processors run identical control algorithms in parallel lockstep execution. Dual cross-domain bus monitors continually check execution registers over the backplane. When a hardware fault or instruction parity error occurs on the active CPU, hardware logic switches control execution to the secondary CPU within 10 ms or less without losing data states or disturbing active output channels.\u003c\/p\u003e\n\u003cp\u003eQ: How does the unit maintain network connectivity with third-party subsystems over Ethernet?\u003c\/p\u003e\n\u003cp\u003eA: The module integrates standard 10BASE-T \/ 100BASE-TX dual Ethernet physical layers that support TCP\/IP and UDP protocols. The internal communication processor manages protocol translation between external PLCs or network nodes and the primary CENTUM VP execution core.\u003c\/p\u003e\n\u003cp\u003eQ: What are the online maintenance parameters for attached Node Interface Units (NIU)?\u003c\/p\u003e\n\u003cp\u003eA: All I\/O channels connected over the redundant ESB bus architecture support full hot-swappable replacement. Maintenance personnel can extract and insert individual input\/output cards on live NIU nodes without powering down the primary AFS30D-H4121 processing core or interrupting active process control execution.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Frame Seating:\u003c\/strong\u003e Fasten the chassis into a standard 19-inch rack slot using M5 mounting screws. Verify that the cabinet frame is mechanically rigid to avoid vibration-induced micro-interruptions along the rear backplane connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundant Power Cabling:\u003c\/strong\u003e Wire independent 24 VDC primary and secondary power sources to the dual supply input terminals. Use separate external thermal-magnetic circuit breakers for each feed path to ensure true power supply fault isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Matrix:\u003c\/strong\u003e Connect all V-net\/IP coaxial lines, Ethernet network cables, and ESB bus shields directly to the cabinet instrument functional earth bar. Keep the functional ground path isolated from protective safety ground cabling, keeping total loop resistance under 1 Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Circulation Clearance:\u003c\/strong\u003e Leave a minimum vertical clearance of 100 mm above and below the FCU chassis within the enclosure. If internal cabinet ambient temperatures exceed 55 deg C, install forced-air cooling fans to ensure heat dissipation away from the processor heatsinks.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43698769657946,"sku":"AFS30D","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/563.1_257e83bd-dd95-4a51-8005-442a3cae9b24.jpg?v=1784688545","url":"https:\/\/www.spareoil.com\/ar\/products\/yokogawa-afs30d-h4121-centum-vp-duplex-field-control-unit","provider":"SpareOil Automation","version":"1.0","type":"link"}