{"product_id":"nfai143-h50-yokogawa-centum-vp-analog-input-module","title":"NFAI143-H50 Yokogawa Centum VP Analog Input Module","description":"\u003ch2\u003eYokogawa NFAI143-H50 Field I\/O Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for 4-20 mA transmitter signal processing in Yokogawa Centum VP platforms, the \u003cstrong\u003eYokogawa NFAI143-H50\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNFAI143\u003c\/strong\u003e Analog Input Module, provides direct physical\/electrical execution. It operates within the Field I\/O (FIO) subsystem to acquire primary process variables from 2-wire and 4-wire field transmitters across 16 isolated channels.\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\u003e\u003cstrong\u003eOption Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNFAI143\u003c\/td\u003e\n\u003ctd\u003eBase Model Code\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module (16-channel, isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-H\u003c\/td\u003e\n\u003ctd\u003eSignal Type \/ Function\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA current input signal with HART communication support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eDual-Redundancy \/ Standalone\u003c\/td\u003e\n\u003ctd\u003eStandard mounting style for single or dual-redundant node deployment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003ctd\u003eSpecial Specification\u003c\/td\u003e\n\u003ctd\u003eStandard tropicalization \/ Basic specification\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\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\u003eNFAI143-H50\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\u003e0.24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e32 x 123 x 130 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\u003e0.4 A at 24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e16 channels (isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC \/ 1 to 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e24 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Power Supply\u003c\/td\u003e\n\u003ctd\u003e24.0 to 25.5 VDC (output current limit: 25 mA per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Interface\u003c\/td\u003e\n\u003ctd\u003eConfigurable 2-wire or 4-wire per channel via jumper pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003eMax ±0.01%\/deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Cycle\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Step Response Time\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Withstand Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC for 1 minute (between input channels and system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e10 to 90% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHART Communication and Process Isolation Features\u003c\/h3\u003e\n\u003cp\u003eThe module provides full support for the 4-20 mA HART loop protocol, allowing superimposition of digital diagnostic data onto standard analog signals without interrupting primary process updates. Integrated channel-to-system galvanic isolation rated at 1500 VAC suppresses ground potential differences and prevents high-voltage common-mode electrical noise from entering the FIO backplane. Each channel features short-circuit current limiting set to 25 mA, protecting onboard power distribution circuits when driving field-mounted 2-wire pressure, flow, or level transmitters.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is individual channel selection configured between 2-wire and 4-wire field transmitters?\u003c\/p\u003e\n\u003cp\u003eA: Channel modes are set independently via hardware setting pins located directly on the module circuit assembly, establishing proper internal transmitter loop power delivery or passive signal sensing.\u003c\/p\u003e\n\u003cp\u003eQ: What protection is provided against external current surges on the signal inputs?\u003c\/p\u003e\n\u003cp\u003eA: Every channel features built-in overcurrent protection that clamps inputs above allowable limits, maintaining functional circuit safety up to a maximum continuous current of 24 mA DC.\u003c\/p\u003e\n\u003cp\u003eQ: Can this module be installed into redundant node units under active power?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports hot-swap replacement within dual-redundant FIO node configurations, enabling online module replacement without disturbing adjacent signal channels or interrupting system communication.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eVerify complete removal of hazardous voltage source lines prior to inserting the NFAI143-H50 into the targeted FIO rack slot. Ensure all channel setting jumpers match the exact field wiring topology (2-wire loop-powered vs. 4-wire self-powered) for every connected instrument. Secure signal line shielding to the dedicated cabinet grounding bus using a single-point termination scheme to avoid ground loop noise. Maintain standard separation distances between low-level analog wiring runs and high-voltage AC lines within cabinet wireways.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43831983571034,"sku":"NFAI143-H50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/12._ae475a4b-9958-4295-bb38-08327bc3c199.jpg?v=1786503236","url":"https:\/\/www.spareoil.com\/products\/nfai143-h50-yokogawa-centum-vp-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}