{"product_id":"allen-bradley-1756-if16k-controllogix-analog-input-module","title":"Allen-Bradley 1756-IF16K ControlLogix Analog Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IF16K ControlLogix Analog Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IF16K\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IF16K\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAnalog Input Module, operates as a dedicated hardware component for acquisition of voltage and current signals within ControlLogix backplane I\/O systems. The module supports 16 single-ended, 8 differential, and 4 high-speed differential input configurations for mixed analog acquisition.\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-IF16K\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\u003e0.50 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1 slot width ControlLogix chassis\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\u003e2.3 W (voltage mode), 3.9 W (current mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e16 single-ended \/ 8 differential \/ 4 high-speed differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Range\u003c\/td\u003e\n\u003ctd\u003e0-5.125 V, 0-10.25 V, +\/-10.25 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e150 mA at 5 VDC, 65 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Off-State Input Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eBackplane referenced isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH, 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eOpen style, chassis mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Scaling and Multi-Mode Acquisition\u003c\/h3\u003e\n\u003cp\u003eThe module implements mixed-mode analog acquisition through internal channel multiplexing, allowing dynamic switching between single-ended, differential, and high-speed differential sampling structures. High-speed differential mode reduces effective channel concurrency to 4 inputs while maintaining fixed backplane scheduling.\u003c\/p\u003e\n\u003cp\u003eBackplane current draw is segmented across 5 VDC logic rail (150 mA) and 24 VDC field interface rail (65 mA), with deterministic timing controlled by ControlLogix chassis communication arbitration.\u003c\/p\u003e\n\u003cp\u003eSignal scaling supports multiple voltage domains including +\/-10.25 V and unipolar 0-10.25 V ranges, enabling direct interface with both voltage-output transducers and current-loop conditioning stages.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can all 16 inputs operate simultaneously in high-speed differential mode?\u003cbr\u003eA: No. High-speed differential configuration reduces active channel count to 4 due to internal sampling resource allocation.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module require separate power supply for analog input operation?\u003cbr\u003eA: No. Power is derived entirely from the ControlLogix backplane 5 VDC and 24 VDC rails.\u003c\/p\u003e\n\u003cp\u003eQ: Is channel isolation independent per input?\u003cbr\u003eA: Inputs share a common backplane reference architecture, and isolation is implemented at module-level boundary rather than per individual channel.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eModule insertion must be performed with chassis slot alignment verified to prevent backplane pin damage. Terminal blocks (1756-TBCH \/ 1756-TBS6H) must be fully seated before energizing analog loops.\u003c\/p\u003e\n\u003cp\u003eShielded wiring is required for all differential and high-speed input configurations. Cable shields should be terminated at a single chassis ground point to avoid ground loop formation across multi-channel analog paths.\u003c\/p\u003e\n\u003cp\u003eWiring separation between voltage input circuits and power conductors must be maintained to preserve signal integrity under high-density I\/O configurations.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43601610965082,"sku":"1756-IF16K","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IF16K2.jpg?v=1783310043","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-if16k-controllogix-analog-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}