{"product_id":"afs30d-h4121-yokogawa-centum-vp-field-control-unit","title":"AFS30D-H4121 Yokogawa CENTUM VP Field Control Unit","description":"\u003ch2\u003eYokogawa AFS30D-H4121 Field Control Unit\u003c\/h2\u003e\n\u003cp\u003eConfigured for real-time control logic execution and deterministic field-level I\/O management in CENTUM VP platforms, the \u003cstrong\u003eYokogawa AFS30D-H4121\u003c\/strong\u003e (\u003cstrong\u003eAFS30D\u003c\/strong\u003e Duplexed Field Control Unit) provides direct physical\/electrical execution.\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\u003e24 VDC (+10% \/ -10%), ~80 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003e133 MHz RISC (VR5432)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB \/ 32 MB battery-backed (up to 72 hours retention)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Recharge Time\u003c\/td\u003e\n\u003ctd\u003e48 hours for full charge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Architecture\u003c\/td\u003e\n\u003ctd\u003eDual CPUs, dual power modules, dual buses (failover latency \u0026lt;= 10 ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003eDual Vnet\/IP, dual ESB bus, dual Ethernet (10BASE-T \/ 100BASE-TX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Contact Output\u003c\/td\u003e\n\u003ctd\u003e2 terminals (NC, C), rated 30 VDC; opens on FCU failure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Network Protocol Execution\u003c\/h3\u003e\n\u003cp\u003eThe AFS30D-H4121 executes field automation tasks over dual Vnet\/IP real-time control networks and ESB bus interfaces. Channel-to-channel isolation and hardware redundancy maintain signal integrity between field devices and Human Interface Stations (HIS). The unit manages up to 8 NIU nodes or 256 I\/O points across configurable control cycles ranging from 100 ms to 1 s. Integrated battery backup preserves internal system memory during power interrupts, while a dedicated status contact output opens to signal hardware fault states to external safety circuits.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the behavior of the internal status contact during an FCU failure?\u003c\/p\u003e\n\u003cp\u003eA: The two output terminals (NC, C) open when an internal FCU fault occurs, providing a hardware-level dry contact signal rated for up to 30 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: How long must the backup battery charge to maintain main memory during a total power loss?\u003c\/p\u003e\n\u003cp\u003eA: A full battery charge cycle requires 48 hours of continuous DC power to guarantee memory retention for up to 72 hours during outage conditions.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum switchover latency when a CPU failover event triggers in duplex mode?\u003c\/p\u003e\n\u003cp\u003eA: The duplex system executes seamless bumpless transfer between active and standby processors within \u0026lt;= 10 ms.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit securely into a standard panel or cabinet enclosure using designated mounting points to maintain adequate airflow around the assembly. Connect dual independent 24 VDC power feeds directly to the power terminals to preserve full redundancy. Verify that network connections to dual Vnet\/IP and ESB communication lines utilize shielded twisted-pair cables with proper shield grounding at a single panel ground point. Address each node correctly before power-up, and allow the system to complete diagnostic self-checks via onboard LED indicators prior to commissioning.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43912471085146,"sku":"AFS30D-H4121","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/566._282e9cd8-ff26-4967-b0d9-9850b7a017ff.jpg?v=1787710026","url":"https:\/\/www.spareoil.com\/products\/afs30d-h4121-yokogawa-centum-vp-field-control-unit","provider":"SpareOil Automation","version":"1.0","type":"link"}