{"product_id":"nfai841-s00-s2-yokogawa-hart-analog-i-o-module-dcs","title":"NFAI841-S00 S2 YOKOGAWA HART Analog I\/O Module DCS","description":"\u003ch2\u003eYOKOGAWA NFAI841-S00 S2 Analog I\/O Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA NFAI841-S00 S2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNFAI841\u003c\/strong\u003e Analog I\/O Module, operates as a dedicated hardware component for process monitoring and control signal processing within CENTUM VP and STARDOM DCS platforms. The unit processes dual-function analog operations directly at the module backplane, converting physical process variables into digitized internal system registers.\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\u003eNFAI841-S00 S2\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\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.2 cm x 12.4 cm x 12.6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e230 mA (5 VDC), 540 mA (24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003e8 Analog Inputs \/ 8 Analog Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Range\u003c\/td\u003e\n\u003ctd\u003e0-20 mA, 4-20 mA, 1-5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Resolution\u003c\/td\u003e\n\u003ctd\u003e16-bit ADC\/DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-16 uA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Rating\u003c\/td\u003e\n\u003ctd\u003e1500 VAC between I\/O and backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Fieldbus Interfacing\u003c\/h3\u003e\n\u003cp\u003eThe module integrates 4-20 mA HART loop protocol support across its input and output channels, facilitating bidirectional digital data transfer alongside primary analog variables. Internal 1500 VAC galvanic isolation pathways isolate field instrumentation loops from the internal system bus, mitigating ground potential shifts and industrial noise transients. Dedicated surge suppression circuits protect individual channel pathways from high-voltage field spikes, maintaining signal integrity under variable field conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the unit support online module hot-swapping during active loop operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module features hot-swap capabilities, allowing field technicians to replace an active unit on the backplane without interrupting power to adjacent DCS hardware or shutting down system racks.\u003c\/p\u003e\n\u003cp\u003eQ: How do the output channels handle signal retention during backplane communication loss?\u003c\/p\u003e\n\u003cp\u003eA: The module executes integrated rollback logic, allowing output channels to maintain specified HOLD or SETV fallback states during system control interruptions.\u003c\/p\u003e\n\u003cp\u003eQ: What environmental protection standards apply to this module for harsh process environments?\u003c\/p\u003e\n\u003cp\u003eA: The circuit board assembly features conformal coating compliant with the ISA G3 environmental classification for advanced corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the module vertically into the designated backplane slot of the field control station, pushing firmly until the latching mechanism clicks securely into place. Tighten the top panel retention screw to ensure a low-resistance chassis ground connection to the rack frame.\u003c\/p\u003e\n\u003cp\u003eRoute 4-20 mA analog input and output cables through separate low-voltage wire trays, maintaining at least 300 mm clearance from high-voltage AC conductors. Connect incoming field wiring to the pressure clamp terminal block, terminating all cable shields at a central earth grounding bus to prevent ground loops. Verify that ambient operating temperatures within the enclosure remain between -20 and +70 deg C.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43873211580506,"sku":"NFAI841-S00 S2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/857..jpg?v=1787192095","url":"https:\/\/www.spareoil.com\/products\/nfai841-s00-s2-yokogawa-hart-analog-i-o-module-dcs","provider":"SpareOil Automation","version":"1.0","type":"link"}