{"product_id":"yokogawa-aai143-h03-fio-16-channel-hart-analog-input-module","title":"Yokogawa AAI143-H03 FIO 16-Channel HART Analog Input Module","description":"\u003ch2\u003eYokogawa AAI143-H03 FIO Series Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AAI143-H03\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAAI143\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for 4-20 mA loop signal acquisition within CENTUM VP\/CS distributed control systems. This 16-channel hardware subassembly interfaces directly with external process transmitters to convert analog loop currents into localized digital registers. The module maintains continuous parameter synchronization with the central controller while providing physical loop isolation across all field terminal pathways.\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\u003eAAI143-H03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa Electric Corporation\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\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 x 127.2 x 32.8 mm\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\u003e~350 mA at 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated current inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Type\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e24 mA DC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.1% FS typical (+\/- 16 uA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC (Signal-to-system, 1 min); 200 V AC between channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance (Power ON)\u003c\/td\u003e\n\u003ctd\u003e270 Ohm (at 20 mA) to 350 Ohm (at 4 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance (Power OFF)\u003c\/td\u003e\n\u003ctd\u003e500 kOhm or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Connection\u003c\/td\u003e\n\u003ctd\u003eKS Cable Interface Adapter (For AEA4D Terminal Board via ATK4A-00)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; DCS Instrumentation Technical Attributes\u003c\/h3\u003e\n\u003cp\u003eThe electrical topology of this module integrates a dedicated 4-20 mA HART loop protocol layer, which passes high-frequency digital instrument diagnostics concurrently over the base analog current signals. Individual input circuits display a dynamic input resistance range from 270 Ohm under full loop current down to 350 Ohm during low-scale conditions, while a power-off state opens the path to a minimum of 500 kOhm. Galvanic channel-to-channel isolation barriers rated at 200 V AC eliminate localized ground loops across multi-transmitter networks. System backplane protection is maintained by an optical isolation assembly designed to withstand voltages up to 1500 V AC for 1 minute. The H03 hardware designation indicates factory-applied ISA Standard G3 conformal coating, which shields internal component matrices against corrosive atmospheres over an extended temperature envelope.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module react to an external transmitter line breakage or sensor short-circuit?\u003c\/p\u003e\n\u003cp\u003eA: The input circuit monitors the loop current continuously. If a field line break occurs and the current drops below the lower threshold, or if a short drives the current beyond the 24 mA maximum limit, the internal diagnostics set an I\/O error flag for that specific channel on the backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions must be followed regarding the internal current loops when the module loses power?\u003c\/p\u003e\n\u003cp\u003eA: When power is lost, the internal input resistance shifts automatically to 500 kOhm or higher. This shift stops current flow through the specific loop, requiring upstream field instruments or power distribution panels to handle the resulting open-circuit condition safely.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Insertion\u003c\/strong\u003e: Align the module chassis with the target FIO baseplate slot guides. Push the hardware component firmly until the rear connector blocks interface completely with the active backplane, then secure the integrated mechanical locking clips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Adaption\u003c\/strong\u003e: Mount the ATK4A-00 KS cable interface adapter directly to the front connector header of the module. Tighten all retention screws to prevent contact resistance variations caused by field vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding Termination\u003c\/strong\u003e: Run all 4-20 mA field signal wires through separate low-voltage instrument ducts. Terminate the outer cable shields directly at the dedicated cabinet earth ground bar to preserve the 1500 V AC isolation barrier boundary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Monitoring\u003c\/strong\u003e: Verify that the enclosure ventilation design maintains ambient interior temperatures within the -20 to +70 deg C operating limits, keeping the module surface free from dust accumulation.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43778183364698,"sku":"AAI143-H03","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/178_dd1c0360-4f67-490a-8004-c2383e6e1d7c.jpg?v=1785727276","url":"https:\/\/www.spareoil.com\/products\/yokogawa-aai143-h03-fio-16-channel-hart-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}