{"product_id":"allen-bradley-1756-if8i-controllogix-analog-input-module","title":"Allen-Bradley 1756-IF8I ControlLogix Analog Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IF8I 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-IF8I\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IF8I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAnalog Input Module, operates as a dedicated hardware component for acquisition of voltage and current signals from field transmitters within the ControlLogix system. It provides 8 configurable input channels supporting mixed voltage and current measurement modes under ControlLogix backplane communication.\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-IF8I\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\u003e0.94 lbs\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\u003e5.1 VDC 200 mA, 24 VDC 400 mA (backplane dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types\u003c\/td\u003e\n\u003ctd\u003eVoltage, Current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Ranges\u003c\/td\u003e\n\u003ctd\u003e-10 to 10 V, 0 to 10 V, 0 to 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Method\u003c\/td\u003e\n\u003ctd\u003eSigma-Delta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e24 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e1 Slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel isolation (as specified in module design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Bus \u0026amp; I\/O Configuration Behavior\u003c\/h3\u003e\n\u003cp\u003eThe module operates on ControlLogix backplane communication with deterministic scan exchange. Mixed analog acquisition is executed through internal sigma-delta conversion with time-sliced channel processing. I\/O density scaling is constrained by per-slot backplane current consumption and chassis power budget. Firmware execution aligns with ControlLogix module identity mapping and slot-based configuration indexing.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1756-IF8I support simultaneous voltage and current inputs across channels?\u003cbr\u003eA: Yes. Each of the 8 channels can be independently configured for voltage or 0–20 mA current mode within a single module instance.\u003c\/p\u003e\n\u003cp\u003eQ: What is the backplane current impact during full channel utilization?\u003cbr\u003eA: The module draws up to 200 mA at 5.1 VDC and 400 mA at 24 VDC from the ControlLogix backplane depending on operating state.\u003c\/p\u003e\n\u003cp\u003eQ: Is hot-swapping supported during active backplane communication?\u003cbr\u003eA: Module removal is supported only under chassis power-down conditions or controller-safe state. Active removal may cause I\/O configuration loss.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module into a ControlLogix chassis slot with verified backplane seating engagement. Use compatible terminal blocks for field wiring termination. Maintain shield continuity to chassis ground at a single termination point to avoid ground loop formation. Observe conductor routing separation between analog signal wiring and high-voltage power lines. Ensure chassis power is isolated prior to module insertion or removal.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43602318098522,"sku":"1756-IF8I","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IF8I2.jpg?v=1783317891","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-if8i-controllogix-analog-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}