{"product_id":"allen-bradley-1756-if16h-a-controllogix-analog-input-module-with-hart","title":"Allen-Bradley 1756-IF16H\/A ControlLogix Analog Input Module with HART","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IF16H\/A ControlLogix Analog Input Module with HART\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IF16H\/A\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IF16H\/A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eanalog input module, operates as a dedicated hardware component for acquisition and HART digital overlay of analog process signals within ControlLogix I\/O backplane systems. The module executes 16-channel differential voltage\/current conversion with per-channel HART modem access over shared analog wiring.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\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\u003e1756-IF16H\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e1 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.02 W total backplane power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 differential analog channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types\u003c\/td\u003e\n\u003ctd\u003e0-20 mA, 4-20 mA, ±10 V, 0-10 V, 0-5 V, 1-5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16–21 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1% full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e200 mA at 5.1 VDC; 125 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e50 V continuous channel-to-backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Scan Time\u003c\/td\u003e\n\u003ctd\u003e~1 s (all channels HART enabled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Scan Time\u003c\/td\u003e\n\u003ctd\u003e11–328 ms (filter dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003eVoltage \u0026gt;1 MΩ; Current 250 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH \/ 1756-TBS6H RTB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eOpen style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane and HART Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe module integrates into the ControlLogix backplane via deterministic I\/O scheduling, where analog conversion results and HART frames are multiplexed across the same channel structure. Each input channel includes a dedicated HART modem path allowing simultaneous analog measurement and digital field device communication without external multiplexing hardware.\u003c\/p\u003e\n\u003cp\u003eBackplane bus execution follows cyclic scan scheduling with variable update segmentation based on configured filter time and channel count allocation. HART overlay traffic introduces additional scan latency when all channels are enabled, reflected in the ~1 s full-channel HART interrogation cycle.\u003c\/p\u003e\n\u003cp\u003eChannel-to-backplane isolation architecture is implemented at 50 V continuous rating, separating field wiring domain from ControlLogix chassis logic domain.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the module perform simultaneous analog conversion and HART communication on all channels?\u003cbr\u003eA: Yes. Each channel supports a dedicated HART modem path; however, full-channel HART polling increases total scan time to approximately 1 s.\u003c\/p\u003e\n\u003cp\u003eQ: What happens to backplane load during high-speed update mode?\u003cbr\u003eA: Backplane current consumption remains within 200 mA at 5.1 VDC, but scan segmentation reduces active channel concurrency depending on configuration.\u003c\/p\u003e\n\u003cp\u003eQ: Is channel-to-channel isolation available?\u003cbr\u003eA: No. Isolation is implemented between channels and backplane only; channels share grouped architecture for analog input domain.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eThe module shall be inserted into a compatible ControlLogix chassis slot with power removed. RTB (1756-TBCH or 1756-TBS6H) must be fully seated prior to energizing the backplane.\u003c\/p\u003e\n\u003cp\u003eShield termination should be executed at a single-point ground reference within the cabinet to prevent ground loop formation across analog current loops (4-20 mA). Maintain separation between analog signal wiring and backplane power conductors to reduce coupling noise into high-resolution ADC stages.\u003c\/p\u003e\n\u003cp\u003eEnsure torque compliance on RTB terminal screws according to ControlLogix installation practice to maintain stable low-impedance field connections.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43601548214362,"sku":"1756-IF16H\/A","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IF16A1.jpg?v=1783308251","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-if16h-a-controllogix-analog-input-module-with-hart","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}