{"product_id":"allen-bradley-1756-a7xt-controllogix-xt-extended-temperature-7-slot-chassis","title":"Allen-Bradley 1756-A7XT ControlLogix XT Extended Temperature 7-Slot Chassis","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley\u003cstrong\u003e 1756-A7XT\u003c\/strong\u003e acts as a heavy-duty, 7-slot extended temperature (XT) backplane chassis engineered for the ControlLogix programmable automation controller (PAC) platform. This high-reliability hardware backbone distributes logical bus communication and low-voltage DC operating power across up to seven ControlLogix modules, including processors, industrial network cards, and specialized I\/O slices.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically to survive outside standard climate-conditioned control rooms, this chassis withstands aggressive thermal variations and harsh atmospheric conditions. We supply this product exclusively as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new, original factory-sealed unit\u003c\/strong\u003e, which guarantees flawless backplane pin insulation, pristine conformal coating matrices, and uncompromised factory data integrity.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe following reference matrix details the electrical distribution capacities, slot layout, and physical profile of this 7-slot XT chassis:\u003c\/p\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\u003ePerformance \u0026amp; System Specifications\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-A7XT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Family\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eControlLogix XT Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRugged Extended Temperature Chassis\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTotal Available Slots\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7 Module Slots\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChassis Power Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.5 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (5.1V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 A Total Chassis Maximum \/ 6 A Individual Slot Maximum\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (24V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 A Total Chassis Maximum \/ 2 A Individual Slot Maximum\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eControl Classification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePLCs \/ Machine Control Hardware\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.00 lbs (1.36 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDefeats Extreme Thermal Degradation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe specialized \"XT\" manufacturing process upgrades the internal backplane traces and multi-layer fiberglass substrates. This construction prevents delamination and tracing fractures when exposed to radical thermal cycles, allowing engineers to mount the control rack directly inside unconditioned field panels near harsh processing equipment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrevents Bus Voltage Drops Under High I\/O Loads:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe robust backplane distribution rails deliver up to 10 Amperes of continuous 5.1V DC power across the slots. This massive current headroom prevents dangerous voltage sags when inserting high-density 32-point digital modules or complex analog processing cards, eliminating intermittent backplane communication dropouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCondenses Footprint for Mid-Sized Enclosures:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 7-slot form factor provides the ideal architectural sweet spot for remote drop installations. It offers ample expansion room for dual communication adapters and several I\/O cards while cutting horizontal panel width requirements compared to standard 10-slot or 17-slot chassis models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I insert standard, non-XT ControlLogix modules into this 1756-A7XT chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the physical slot dimensions and electrical pinouts match standard 1756 series hardware perfectly. However, the weakest link defines the total environmental rating of the cluster. Inserting a standard commercial module strips away the extended temperature capability of the system, restricting safe operational limits to standard commercial specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mounting steps prevent high-frequency electrical noise from corrupting the backplane data?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTechnicians must fasten the chassis horizontally onto a flat, unpainted metal backplate using the designated heavy-gauge mounting tabs. Use internal-tooth star washers under the mounting bolts to scratch through any surface film, creating a solid, low-impedance metal-to-metal ground path that drains off parasitic electromagnetic interference (EMI).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the specification list separate chassis limits and slot limits for the 5.1V DC bus?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe individual slot limit (6 A) protects the thin spring-loaded pins inside a single chassis connector slot from overheating. The total chassis limit (10 A) defines the maximum thermal load capacity of the master backplane power rails. You must calculate the combined current draw of all seven inserted modules to ensure the aggregate load stays below the 10 A ceiling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52904264433973,"sku":"1756-A7XT","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1756-A7K_6b33ae1c-644b-45e1-a1b4-8ad2f07f518d.jpg?v=1779247007","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1756-a7xt-controllogix-xt-extended-temperature-7-slot-chassis","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}