{"product_id":"1756-if8ih-allen-bradley-controllogix-isolated-hart-analog-input-module","title":"1756-IF8IH | Allen-Bradley | ControlLogix Isolated HART Analog Input Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IF8IH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-precision, channel-to-channel isolated analog input module for the ControlLogix ecosystem. This module integrates 8 current inputs and supports full\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHART (Highway Addressable Remote Transducer)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecommunication protocol. It bridges the gap between sophisticated field instruments and the controller by providing real-time secondary variables and device diagnostics. We deliver this unit in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New, original condition\u003c\/strong\u003e, ensuring maximum integrity for your high-availability process control loops.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Individually Isolated Current Inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Signal Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0...20 mA \/ 4...20 mA (up to 20.58 mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 to 21 Bits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V DC Continuous (Reinforced)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication Protocol\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHART Communications\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eData Format\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIEEE 32-bit Floating Point\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eScan Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e15...488 ms (Filter Dependent)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOvervoltage Protection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e28.8V DC Typical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e210 mA @ 5.1V DC \/ 110 mA @ 24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEliminate Ground Loops:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-IF8IH features reinforced isolation up to 250V DC. This individual channel-to-backplane isolation prevents noise propagation and ground loop currents from corrupting sensitive analog data, even in geographically dispersed instrumentation networks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUnlock Asset Intelligence:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated HART modems allow the module to extract device status, calibration dates, and secondary process variables without additional handheld communicators. This enables predictive maintenance strategies directly through the ControlLogix backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Signal Fidelity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a resolution capability of up to 21 bits, the module captures minute fluctuations in current. This high-density data processing allows for finer control over PID loops in industries like oil and gas, pharmaceuticals, and power generation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Circuit Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module incorporates 28.8V DC overvoltage protection. This hardware-level safeguard prevents internal component damage caused by accidental cross-wiring to 24V power circuits, reducing potential repair costs and downtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Successive Approximation conversion method ensures rapid data throughput. Depending on the filter settings, the module updates variables as fast as 15 ms, meeting the timing requirements of high-speed process safety systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does this module handle HART data compared to non-HART modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-IF8IH contains internal circuitry that separates the 4-20 mA analog signal from the digital HART signal. It routes the digital data to your asset management software while providing the analog value to the controller logic simultaneously.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of wiring is recommended for the 1756-IF8IH?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse shielded twisted-pair copper wire to minimize electromagnetic interference. Ensure that you ground the cable shield at only one end (preferably at the module) to maintain the benefits of the module's 250V isolation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific Removable Terminal Block (RTB)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 1756-IF8IH typically utilizes the 36-pin RTB (such as the 1756-TBCH or 1756-TBS6H). Always verify the RTB compatibility with your chassis depth before installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this product factory-sealed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We supply only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eunits in their original Allen-Bradley factory packaging, ensuring you receive the latest hardware revision with full manufacturer reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53113602736312,"sku":"1756-IF8IH","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756SC-IF8H_679ac506-7805-4e58-80d0-85db13e56170.jpg?v=1774603053","url":"https:\/\/www.globalpetroparts.com\/products\/1756-if8ih-allen-bradley-controllogix-isolated-hart-analog-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}