{"product_id":"allen-bradley-1756-a5xt-controllogix-xt-chassis","title":"Allen-Bradley 1756-A5XT ControlLogix-XT Chassis","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-A5XT ControlLogix-XT Chassis\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-A5XT\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-A5XT\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePLC chassis, serves as a modular backplane carrier for ControlLogix-XT I\/O and controller modules within extended-temperature rack architectures. The open-style chassis provides passive electrical interconnection across five slots, supporting backplane-based data exchange and distributed power routing via installed ControlLogix power supplies.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eNo functional segmentation is defined beyond the “XT” designation, which indicates extended temperature and conformal-coated hardware construction within the ControlLogix-XT chassis family.\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-A5XT\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\u003e1.11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-25 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.4 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlots\u003c\/td\u003e\n\u003ctd\u003e5 module slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (1.2 V DC)\u003c\/td\u003e\n\u003ctd\u003e1.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (3.3 V DC)\u003c\/td\u003e\n\u003ctd\u003e4 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1 V DC)\u003c\/td\u003e\n\u003ctd\u003e15 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 V DC)\u003c\/td\u003e\n\u003ctd\u003e2.8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eHorizontal back-panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type\u003c\/td\u003e\n\u003ctd\u003eOpen-style (no enclosure rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Type\u003c\/td\u003e\n\u003ctd\u003eConformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e2 G (10–500 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Resistance\u003c\/td\u003e\n\u003ctd\u003e30 G (operational \/ non-operational)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESD Immunity\u003c\/td\u003e\n\u003ctd\u003e6 kV contact \/ 8 kV air discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Deterministic Communication Behavior\u003c\/h3\u003e\n\u003cp\u003eThe 1756-A5XT chassis implements a passive ControlLogix backplane structure where module-to-module communication is executed through controller-managed deterministic scheduling. Backplane current rails at 1.2 V, 3.3 V, 5.1 V, and 24 V DC are distributed across the shared bus architecture, with load allocation governed by installed module power profiles. The XT conformal coating layer provides electrical insulation stability under condensation and contamination exposure without affecting backplane signal integrity or bus timing.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756-A5XT chassis actively manage backplane traffic arbitration?\u003cbr\u003eA: No. Backplane arbitration and deterministic scheduling are handled by the ControlLogix controller. The chassis functions as a passive electrical and mechanical carrier.\u003c\/p\u003e\n\u003cp\u003eQ: Can the chassis operate without a power supply module installed?\u003cbr\u003eA: No. The chassis requires a compatible ControlLogix power supply to energize backplane rails and enable module operation.\u003c\/p\u003e\n\u003cp\u003eQ: Does conformal coating affect signal transmission or grounding performance?\u003cbr\u003eA: The conformal coating is non-conductive and does not participate in signal paths. Grounding performance is determined by chassis grounding conductors and installation practice.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the chassis on a rigid back panel in horizontal orientation only. Ensure full engagement of all mounting points to maintain backplane connector alignment under vibration conditions. Apply functional earth and protective earth conductors according to specified AWG sizing. Maintain separation between backplane power wiring and field signal cabling to reduce electromagnetic coupling. Verify total module load against backplane current limits before energizing the system. Enclosure integration is required due to open-style chassis design.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43569982668890,"sku":"1756-A5XT","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-A171.jpg?v=1782703605","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-a5xt-controllogix-xt-chassis","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}