{"product_id":"1746-a7-allen-bradley-mounting-chassis-new-original-stock","title":"1746-A7 Allen-Bradley Mounting Chassis | New \u0026 Original Stock","description":"\u003ch2\u003eAllen-Bradley 1746-A7 SLC 500 Mounting Chassis\u003c\/h2\u003e\n\u003cp\u003eConfigured for housing SLC processors, power supplies, and operational I\/O modules within SLC 500 platforms, the \u003cstrong\u003eAllen-Bradley 1746-A7\u003c\/strong\u003e (\u003cstrong\u003e1746-A7\u003c\/strong\u003e Mounting Chassis) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"2\"\u003eModel\u003c\/td\u003e\n\u003ctd data-row=\"2\"\u003e1746-A7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"3\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-row=\"3\"\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"4\"\u003eOrigin\u003c\/td\u003e\n\u003ctd data-row=\"4\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"5\"\u003eWeight\u003c\/td\u003e\n\u003ctd data-row=\"5\"\u003e2.69 lbs (1.22 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"6\"\u003eDimensions\u003c\/td\u003e\n\u003ctd data-row=\"6\"\u003e318 mm x 140 mm x 165 mm (12.5 in x 5.5 in x 6.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"7\"\u003eOperating Temp\u003c\/td\u003e\n\u003ctd data-row=\"7\"\u003e0 deg C to +60 deg C (32 to 140 degrees Fahrenheit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"8\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd data-row=\"8\"\u003ePassive distribution (Backplane capacity: 10 A @ 5.1 VDC, 2.88 A @ 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"9\"\u003eNumber of Slots\u003c\/td\u003e\n\u003ctd data-row=\"9\"\u003e7 (1 slot for processor, 6 slots for I\/O\/communication modules)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"10\"\u003eMounting Style\u003c\/td\u003e\n\u003ctd data-row=\"10\"\u003ePanel mount or DIN rail via 4 mounting tabs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"11\"\u003eBus Type\u003c\/td\u003e\n\u003ctd data-row=\"11\"\u003eSLC backplane bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"12\"\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd data-row=\"12\"\u003e5-95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"13\"\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd data-row=\"13\"\u003e2 G operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"14\"\u003eShock Rating\u003c\/td\u003e\n\u003ctd data-row=\"14\"\u003e15 G operating, 30 G non-operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"15\"\u003eCertifications\u003c\/td\u003e\n\u003ctd data-row=\"15\"\u003eUL Listed, CSA Certified, CE Marked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks and Base Integration\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1746-A7\u003c\/strong\u003e establishes the local electrical backbone required to route data links between modules and supervisory network architectures, including Profinet \/ EtherNet\/IP deterministic networks via dedicated scanner modules. The integrated backplane bus utilizes rigid multi-pin connectors to distribute 5.1 VDC and 24 VDC power lines while simultaneously routing deterministic parallel address and data lines. This hardware design maintains transmission timing bounds and structural alignment across all 7 local slots.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the current loading limitations when engineering a system across the 1746-A7 backplane?\u003c\/p\u003e\n\u003cp\u003eA: The chassis backplane exhibits strict current limits of 10 A maximum at 5.1 VDC and 2.88 A maximum at 24 VDC. The cumulative consumption of the installed processor and peripheral modules must not exceed these values.\u003c\/p\u003e\n\u003cp\u003eQ: Can multiple 1746-A7 chassis assemblies be connected to extend total slot density?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The hardware configuration supports interconnection with up to 2 other chassis assemblies utilizing optional chassis interconnect cables, allowing logical expansion of the physical SLC backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: Does this mounting chassis support hot-swapping or insertion of I\/O cards while powered?\u003c\/p\u003e\n\u003cp\u003eA: No. The SLC 500 architecture requires complete removal of input power before inserting or extracting any module from the 7 slots to avoid backplane bus electrical faults or permanent transceiver component damage.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Mounting Orientation:\u003c\/strong\u003e Secure the assembly using the 4 mounting tabs provided. Use Phillips screws with star washers or SEM screws to establish continuous chassis grounding directly to the sub-panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Slot Alignment:\u003c\/strong\u003e Slide modules smoothly along the integrated plastic module guides until the top and bottom chassis latches lock. Improper alignment can result in damaged backplane pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Chassis Cable Routing:\u003c\/strong\u003e When deploying expansion cables to connect separate racks, do not exceed the specified lengths of the official interconnect cables to prevent signal attenuation or propagation delays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management Clearances:\u003c\/strong\u003e Maintain structural spacing limits above and below the chassis to allow unimpeded convection airflow from the power supply heat sinks, keeping internal temperatures within the 0 deg C to +60 deg C operating range.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43415698604122,"sku":"1746-A7","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/159._2fe7bc14-4e80-40e3-ab8a-9fae595e5433.jpg?v=1779759025","url":"https:\/\/www.spareoil.com\/products\/1746-a7-allen-bradley-mounting-chassis-new-original-stock","provider":"SpareOil Automation","version":"1.0","type":"link"}