{"product_id":"allen-bradley-1746-a2-modular-expansion-chassis","title":"Allen-Bradley 1746-A2 SLC 500 2-Slot Modular Expansion Chassis","description":"\u003cp\u003eThe Allen-Bradley 1746-A2 is a compact, 2-slot modular chassis designed for the SLC 500 control system. Engineered for flexibility, it serves as an ideal solution for small-scale I\/O expansion or as a remote rack when configured with an appropriate adapter module. Despite its minimal footprint, the chassis provides robust backplane communication and reliable power distribution for standard SLC 500 hardware.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Configuration:\u003c\/strong\u003e Provides 2 slots, with Slot 0 reserved for the processor or I\/O adapter module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Scalability:\u003c\/strong\u003e Supports daisy-chaining with up to two additional chassis using standard interconnect cables, allowing for a total system capacity of 30 slots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Power Handling:\u003c\/strong\u003e Rated for up to 10A at 5.1V DC and 2.88A at 24V DC on the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Designed for standard back-panel installation within industrial enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis chassis is widely utilized in industrial automation environments requiring localized I\/O expansion. It is frequently integrated into distributed control architectures, serving as a remote I\/O station via Remote I\/O (RIO) or ControlNet adapters, or as a secondary local rack for specialized I\/O modules.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\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\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Capacity\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Backplane Current (5.1V DC)\u003c\/td\u003e\n\u003ctd\u003e10 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Backplane Current (24V DC)\u003c\/td\u003e\n\u003ctd\u003e2.88 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePanel Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95% (Non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel Mounting:\u003c\/strong\u003e Securely mount the chassis to a grounded metal sub-panel to ensure proper electrical bonding and heat dissipation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Always connect the chassis frame ground terminal to a low-impedance earth ground to mitigate EMI and electrical noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Insertion:\u003c\/strong\u003e Ensure the power is disconnected from the backplane before installing or removing any I\/O modules to prevent electrical arcing or damage to the backplane pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e Install in an enclosure rated for the intended environment, maintaining adequate clearance for cooling airflow as specified by the system design requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eCan I use this chassis as a standalone processor rack?\u003c\/strong\u003e\u003cbr\u003eYes, the 1746-A2 can house an SLC 500 processor in Slot 0, allowing it to function as a small, independent controller rack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum number of chassis I can connect together?\u003c\/strong\u003e\u003cbr\u003eYou can connect a total of three chassis in a single local system using the appropriate interconnect cables.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48821582430398,"sku":"1746-A2","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/wm_1_5295e31d-628c-4f02-84b8-bbd9f96006bb.jpg?v=1788236837","url":"https:\/\/www.autooiltech.com\/es\/products\/allen-bradley-1746-a2-modular-expansion-chassis","provider":"AutoOilTech Limited","version":"1.0","type":"link"}