{"product_id":"field-control-unit-yafg84d-h4123-yokogawa","title":"Field Control Unit | YAFG84D-H4123 | Yokogawa","description":"\u003ch2\u003eYokogawa AFG84D-H4123 Field Control Unit\u003c\/h2\u003e\n\u003cp\u003eConfigured for deterministic execution of regulatory control loops in the CENTUM VP Distributed Control System, the \u003cstrong\u003eYokogawa AFG84D-H4123\u003c\/strong\u003e (base model \u003cstrong\u003eAFG84D\u003c\/strong\u003e Field Control Unit) provides direct physical and electrical interfacing between field instrumentation and the Vnet\/IP control network.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eDefinition\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAFG84\u003c\/td\u003e\n\u003ctd\u003eBase Field Control Unit (Duplex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003ctd\u003eDual-redundant Processor\/Power configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH41\u003c\/td\u003e\n\u003ctd\u003eHardware revision denoting 220-240 VAC power input and G3 conformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003eFactory-specific firmware revision and terminal block configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\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\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\u003e18 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm x 310 mm x 265 mm (19-inch rack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e250 VA (typical load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e220-240 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eDuplex (CPU, Power, Bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Interface\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP, ER Bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol Handling\u003c\/h3\u003e\n\u003cp\u003eThe unit processes analog input signals via local FIO modules supporting 4-20 mA HART protocol. Channel-to-channel isolation is maintained at 500 VDC minimum. The backplane logic enforces HART burst mode timing constraints to prevent data collision on shared multidrop networks. Signal conversion latency from field termination to Vnet\/IP packet transmission is fixed at 50 ms.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum hot-swap current limit for replacing a power supply module while the unit is energized?\u003c\/p\u003e\n\u003cp\u003eA: The redundant power supply supports hot-swapping with a maximum inrush current of 30 A for 50 ms. Ensure the replacement module matches the voltage rating of the active supply.\u003c\/p\u003e\n\u003cp\u003eQ: Does the AFG84D-H4123 support automatic firmware rollback during a failed update?\u003c\/p\u003e\n\u003cp\u003eA: No. Firmware flashing requires manual verification of the .bin file checksum via the engineering station. Failed updates require physical access to the maintenance port for recovery.\u003c\/p\u003e\n\u003cp\u003eQ: What is the switching delay during a CPU failover event?\u003c\/p\u003e\n\u003cp\u003eA: The duplex configuration ensures control output continuity with a switchover time of less than 10 ms. No output hold timers are required.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the unit in a 19-inch rack with a minimum clearance of 150 mm at the rear for bus cable routing. Terminate shield drains directly to the chassis ground terminal using a 5\/16 inch ring terminal; do not connect shields at the field instrument end to avoid ground loops. Torque all power terminals to 1.2 Nm. Verify the ER Bus termination resistors are set to ON for the final node in the chain.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44208999235672,"sku":"AFG84D-H4123","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AFG84D-H4123-3.jpg?v=1780971986","url":"https:\/\/www.industriaxplc.com\/products\/field-control-unit-yafg84d-h4123-yokogawa","provider":"IndustriaX Limited","version":"1.0","type":"link"}