{"product_id":"nfai543-yokogawa-centum-vp-fio-analog-input-module","title":"NFAI543 Yokogawa CENTUM VP FIO Analog Input Module","description":"\u003ch2\u003eYokogawa NFAI543 Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-accuracy signal acquisition in CENTUM VP Field I\/O systems, the \u003cstrong\u003eYokogawa NFAI543-S50\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNFAI543\u003c\/strong\u003e Analog Input Module, provides direct physical\/electrical execution. Operating within node units such as ANB10D or ANR10D over ESB and ER bus networks, this unit converts 16 channels of 4-20 mA DC field transmitter signals into 16-bit digital values. The module executes high-density analog monitoring while maintaining total system isolation and signal integrity across process automation loops.\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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNFAI543-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mm x 120 mm x 130 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V DC backplane supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-bit A\/D conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUpdate Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 ms per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-system galvanic isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa CENTUM VP FIO subsystem via ESB\/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 and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe NFAI543 utilizes internal galvanic isolation barriers to decouple field wiring loop dynamics from the local system backplane bus. By establishing galvanic channel-to-channel and channel-to-ground separation, the module eliminates ground loop interference and prevents common-mode high-voltage transients from spreading across adjacent input paths. This isolation profile permits transparent 4-20 mA signal conversion while preserving digital HART loop protocol overlays, allowing diagnostic communication and device parameterization data to pass to maintenance workstations without signal corruption.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the NFAI543 module be inserted into an active FIO baseplate without turning off system power?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports hot-swap functionality within Yokogawa FIO node units, allowing live physical replacement while adjacent modules and system bus communication remain fully operational.\u003c\/p\u003e\n\u003cp\u003eQ: How does the 250 Ohm internal input resistance affect loop voltage calculations?\u003c\/p\u003e\n\u003cp\u003eA: The 250 Ohm internal precision resistor drops 1 to 5 V DC across the 4-20 mA loop, so field transmitters must maintain sufficient terminal voltage to drive this resistance alongside field wiring impedance.\u003c\/p\u003e\n\u003cp\u003eQ: What onboard diagnostic responses occur if an open-circuit fault develops on a field input channel?\u003c\/p\u003e\n\u003cp\u003eA: The module executes self-check routines that detect input wire breaks or out-of-range signal drops below 3.8 mA, driving a channel fault flag to the system software while setting the corresponding status LED on the front panel.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eWhen installing the Yokogawa NFAI543 module in control cabinets, field engineers must adhere to the following steps:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDischarge static electricity by wearing a grounded wrist strap before handling the card or removing it from its protective anti-static packaging.\u003c\/li\u003e\n\u003cli\u003eAlign the module edge connector with the target slot on the FIO rack unit (ANB10D, ANB10S, or ANR10D) and push firmly until the top and bottom mounting latches click into place.\u003c\/li\u003e\n\u003cli\u003eConnect field transmitter wiring to the matching terminal block, ensuring shielded twisted-pair cables are used for all 4-20 mA signal runs.\u003c\/li\u003e\n\u003cli\u003eGround the overall cable shield at a single cabinet earth point on the field termination assembly to avoid ground loops.\u003c\/li\u003e\n\u003cli\u003eMaintain dedicated wire ducting to keep low-voltage 4-20 mA signal lines physically separated from high-voltage AC lines and switching motor drives by a distance of at least 300 mm.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43855766192218,"sku":"NFAI543","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/819..jpg?v=1786934487","url":"https:\/\/www.spareoil.com\/products\/nfai543-yokogawa-centum-vp-fio-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}