{"product_id":"allen-bradley-1746-a7-plc-mounting","title":"Allen-Bradley 1746-A7 SLC 500 7-Slot Modular Chassis","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1746-A7 is a 7-slot modular chassis engineered for the SLC 500 programmable controller system. This chassis provides a robust mounting platform for processors, I\/O modules, and specialty communication cards. Designed for mid-sized automation applications, it offers a compact footprint while maintaining the flexibility required for system expansion. In standard configurations, Slot 0 is reserved for the SLC 500 processor or a remote I\/O adapter, providing six additional slots for I\/O and specialty modules.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSeven-slot capacity for SLC 500 series modules.\u003c\/li\u003e\n\u003cli\u003eSupports multi-chassis configurations, allowing for up to three racks in a single local system via 1746-C series interconnect cables.\u003c\/li\u003e\n\u003cli\u003eRugged backplane design supporting high-speed communication between the processor and I\/O modules.\u003c\/li\u003e\n\u003cli\u003ePanel-mount design with four integrated mounting tabs for secure installation in industrial enclosures.\u003c\/li\u003e\n\u003cli\u003eOptimized for heat dissipation and electrical stability within the SLC 500 architecture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThe 1746-A7 chassis is widely used in manufacturing, process control, and machine automation environments where SLC 500 controllers are deployed. It is suitable for applications requiring moderate I\/O density, such as conveyor control, packaging machinery, and small-to-medium scale process monitoring.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\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\u003eProduct Line\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\u003e7 Slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1V DC)\u003c\/td\u003e\n\u003ctd\u003e10 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V DC)\u003c\/td\u003e\n\u003ctd\u003e2.88 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003ePanel Mount (4 Tabs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC (32 to 140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC (-40 to 185 degF)\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\u003eEnsure the chassis is mounted on a flat, rigid surface using all four mounting tabs to prevent mechanical stress.\u003c\/li\u003e\n\u003cli\u003eUse SEM screws or Phillips screws with star washers to ensure proper chassis grounding to the enclosure backplane.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the chassis to facilitate airflow and heat dissipation; do not obstruct ventilation slots.\u003c\/li\u003e\n\u003cli\u003eAlways power down the system before inserting or removing modules from the chassis to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eWhen using multiple chassis, ensure the 1746-C interconnect cables are fully seated and secured to maintain backplane signal integrity.\u003c\/li\u003e\n\u003cli\u003eKeep the chassis away from high-EMI sources, such as large motor starters or high-voltage power lines, to minimize signal interference.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eCan I use this chassis with any SLC 500 processor?\u003c\/h3\u003e\u003cp\u003eYes, the 1746-A7 is compatible with standard SLC 500 processors that fit into the 1746 modular chassis architecture. Ensure your specific processor model supports the backplane current requirements of your total module configuration.\u003c\/p\u003e\u003ch3\u003eHow do I expand my system using this chassis?\u003c\/h3\u003e\u003cp\u003eYou can connect up to two additional 1746 chassis to the primary rack using 1746-C series interconnect cables. This allows for a maximum of three chassis in a single local I\/O system.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50730144694524,"sku":"1746-A7","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_fa94d9bf-869c-42a0-9662-6f160d05c005.jpg?v=1785210562","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-1746-a7-plc-mounting","provider":"Electronic PLC","version":"1.0","type":"link"}