{"product_id":"allen-bradley-1746-a2-modular-expansion-chassis","title":"Allen-Bradley 1746-A2 SLC 500 Modular Expansion Chassis","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1746-A2 is a 2-slot modular chassis designed for the SLC 500 control system. As the most compact chassis in the SLC 500 product line, it is primarily used as an expansion rack for adding I\/O points to an existing system or as a remote I\/O station when utilized with an appropriate adapter module. Despite its small form factor, the 1746-A2 provides the necessary backplane communication and power distribution required for standard 1746 I\/O modules.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompact 2-slot design for space-constrained industrial environments.\u003c\/li\u003e\n\u003cli\u003eSupports one processor or I\/O adapter in Slot 0 and one additional I\/O module.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard SLC 500 backplane communication protocols.\u003c\/li\u003e\n\u003cli\u003eSupports system expansion by interconnecting up to three chassis total using standard chassis interconnect cables.\u003c\/li\u003e\n\u003cli\u003eRobust backplane power distribution for reliable module operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThe 1746-A2 is ideal for small-scale automation tasks, remote I\/O drops, or as a secondary expansion rack in larger SLC 500 control architectures. It is commonly deployed in manufacturing, material handling, and process control systems where modularity and footprint efficiency are required.\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\u003e2 Slots\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 Type\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 (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\u003eHumidity\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, vibration-resistant surface using the provided mounting holes.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the chassis to allow for proper airflow and heat dissipation.\u003c\/li\u003e\n\u003cli\u003eAlways power down the system before installing or removing modules from the chassis to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eEnsure all modules are fully seated and the retaining screws are tightened to secure the connection to the backplane.\u003c\/li\u003e\n\u003cli\u003eWhen using multiple chassis, ensure interconnect cables are properly routed and shielded from high-EMI sources.\u003c\/li\u003e\n\u003cli\u003eFollow standard ESD precautions when handling the chassis and modules to prevent damage to sensitive electronic components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eCan the 1746-A2 be used as a standalone processor rack?\u003c\/h3\u003e\u003cp\u003eYes, the 1746-A2 can house an SLC 500 processor in Slot 0, allowing it to function as a small, standalone controller rack.\u003c\/p\u003e\u003ch3\u003eHow many chassis can be connected together?\u003c\/h3\u003e\u003cp\u003eYou can connect up to three chassis in a single local system using the appropriate chassis interconnect cables.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50730125492476,"sku":"1746-A2","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_8f4b5ed8-d711-4e7b-afa0-6da61cfb49fe.jpg?v=1785209773","url":"https:\/\/www.electronicplc.com\/es\/products\/allen-bradley-1746-a2-modular-expansion-chassis","provider":"Electronic PLC","version":"1.0","type":"link"}