{"product_id":"yokogawa-afs30d-h4121-field-control-unit-fcu","title":"YOKOGAWA AFS30D-H4121 Field Control Unit (FCU)","description":"\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA AFS30D-H4121\u003c\/strong\u003e is a specialized Field Control Unit (FCU) engineered for integration into the CENTUM VP distributed control system (DCS). It serves as the primary intelligence node for managing field instrumentation and executing control logic within mission-critical industrial processes.\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\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eVR5432, 133 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e16 MB with battery backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Retention\u003c\/td\u003e\n\u003ctd\u003eUp to 72 hours (48h recharge time)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Output\u003c\/td\u003e\n\u003ctd\u003e2 Terminals (NC, C), 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP \u0026amp; FIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack or panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e10 x 10 x 10 cm\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\u003c\/figure\u003e\n\u003ch3\u003eSystem Control Architecture\u003c\/h3\u003e\n\u003cp\u003eThe AFS30D-H4121 facilitates deterministic control by bridging the gap between high-level human-machine interface (HMI) commands and low-level field instrumentation. It supports a \u003cstrong\u003eduplexed architecture\u003c\/strong\u003e, which is fundamental for ensuring high availability in safety-sensitive applications. By utilizing the Vnet\/IP control network, the FCU maintains high-speed, synchronized data exchange, ensuring that process variables are updated reliably across the control loop.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What happens if the internal battery for memory retention fails?\u003c\/p\u003e\n\u003cp\u003eA: If the battery fails or is depleted, the unit may lose control logic or setpoint configurations during a power cycle. It is critical to monitor the battery status and adhere to the 48-hour recharge cycle recommendations to maintain the 72-hour retention capacity.\u003c\/p\u003e\n\u003cp\u003eQ: How does the status contact output function during a system error?\u003c\/p\u003e\n\u003cp\u003eA: The status contact is configured as \"Normally Closed\" (NC). In the event of a critical hardware failure or power loss within the FCU, the contact opens, signaling the failure to external alarm or monitoring systems.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Controls:\u003c\/strong\u003e Although rated for 0°C to 50°C, ensure the unit is installed in an environment with stable temperature and humidity to prolong the lifespan of the memory backup battery and electronic components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Integrity:\u003c\/strong\u003e Utilize high-quality, certified Ethernet cabling for Vnet\/IP connections. Improper cable shielding or termination can lead to intermittent communication dropouts, causing the FCU to enter a fail-safe state.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Stability:\u003c\/strong\u003e Provide a clean, regulated 24 VDC power source. Voltage spikes or significant droops can compromise the logic execution accuracy and the reliability of the communication interfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy Setup:\u003c\/strong\u003e When implementing a duplexed configuration, ensure both FCUs have matched firmware versions to prevent synchronization conflicts that could disrupt control loop execution.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49262491042044,"sku":"AFS30D-H4121","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/ANT401-5EA2EE2AT1.jpg?v=1783562205","url":"https:\/\/www.electronicplc.com\/products\/yokogawa-afs30d-h4121-field-control-unit-fcu","provider":"Electronic PLC","version":"1.0","type":"link"}