{"product_id":"honeywell-tc-fiah81-8-channel-high-level-analog-input-module","title":"Honeywell TC-FIAH81 8-Channel High-Level Analog Input Module","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell TC-FIAH81\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eTC-FIAH81\u003c\/strong\u003e High-Level Analog Input Module, operates as a dedicated hardware component for high-level signal acquisition within Experion PKS, TDC 3000, and C200 controller platforms. The module accepts up to 8 single-ended input channels, digitizing process variables into internal system memory. Internal signal conditioning converts field voltage and current inputs into 12-bit digital values while providing galvanic isolation between system backplane logic and field-side wiring.\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\u003eTC-FIAH81\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.11 kg (Unit) \/ 0.22 kg (Shipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e105 x 115 x 90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3 W Maximum at 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e15 mA at 5 VDC, 60 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e8 Single-ended Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Input Range\u003c\/td\u003e\n\u003ctd\u003e+\/-10 V, 0 to 10 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Input Range\u003c\/td\u003e\n\u003ctd\u003e4-20 mA, 0-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Resolution\u003c\/td\u003e\n\u003ctd\u003e12 bits (Unipolar); 11 bits + sign (Bipolar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003eVoltage: 100 kOhm; Current: 238 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Rating\u003c\/td\u003e\n\u003ctd\u003e850 VDC for 1 second (User-to-System)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e10.2 BTU\/hr\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 \u0026amp; Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell TC-FIAH81 incorporates an internal 238 Ohm precision resistor circuit to execute accurate current-to-voltage conversion for standard 4-20 mA loop protocols. User-to-system galvanic isolation rated at 850 VDC protects backplane electronics from field-side transients and ground potential differentials. Each channel allows independent parameter configuration via control software, preventing signal distortion and ground-loop propagation across adjacent 0 to 10 V or 4-20 mA measurement loops.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the TC-FIAH81 module require external power to drive 4-20 mA loop transmitters?\u003c\/p\u003e\n\u003cp\u003eA: Logic power (5 VDC and 24 VDC) is supplied via the FlexBus backplane. External field power is required for 2-wire transmitters depending on system loop architecture, whereas the module directly conditions incoming loop current through its internal 238 Ohm impedance path.\u003c\/p\u003e\n\u003cp\u003eQ: Can voltage and current input modes be configured simultaneously on a single module?\u003c\/p\u003e\n\u003cp\u003eA: Yes, each of the 8 single-ended channels can be independently configured for either voltage (+\/-10 V, 0 to 10 V) or current (4-20 mA, 0-20 mA) in the software environment without cross-channel interference.\u003c\/p\u003e\n\u003cp\u003eQ: How does backplane power consumption affect cabinet thermal design?\u003c\/p\u003e\n\u003cp\u003eA: The module draws 15 mA at 5 VDC and 60 mA at 24 VDC from the FlexBus, generating a maximum power dissipation of 3 W and a thermal output of 10.2 BTU\/hr, which must be factored into cabinet heat dissipation limits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAlign the TC-FIAH81 module with the chassis guide rails in the C200 or Experion I\/O rack.\u003c\/li\u003e\n\u003cli\u003eSlide the unit inward until the rear connectors fully seat into the FlexBus backplane to establish power and communication paths.\u003c\/li\u003e\n\u003cli\u003eVerify that channel signal types (voltage or current) selected in Experion Control Builder match the physical field wiring configuration prior to applying loop power.\u003c\/li\u003e\n\u003cli\u003eUse shielded twisted-pair (STP) cabling for all analog input runs to minimize external electromagnetic noise interference.\u003c\/li\u003e\n\u003cli\u003eTerminate overall cable shields at a single point on the system earth ground bus to avoid loop current ground shifts.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52368573727016,"sku":"TC-FIAH81","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/TC-FIAH81.png?v=1789113759","url":"https:\/\/www.powerdcs.com\/es\/products\/honeywell-tc-fiah81-8-channel-high-level-analog-input-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}