The 1756-A17, a ControlLogix component from Allen-Bradley (Rockwell Automation), is a 17-slot rack that houses ControlLogix modules, including processors, I/O modules, special modules, and partner modules. This rack provides module mounting space as well as the necessary backplane connections, allowing internal module connection and distribution of bus power to the rack through embedded electronic circuits and provided mounting slots. The power consumption of the 1756-A17 is 1.5A@1.2VDC; 4A/ 4a@ 3.3VDC; 15 A/6 A@ 24VDC, weight 2.20 kg (4.8 lb)

The 1756-A17 supports horizontal mounting only and requires a minimum cabinet size or available space of 76.2 x 91.4 x 20.3 cm (30 x 36 x 8 in). It offers 10 mounting strips that allow the panel to be mounted directly onto the shelf panel for easy and fast installation. When installed with a nearby ControlLogix rack, specific space requirements are required, including gaps at the top and bottom.

The 1756-A17 rack is available in three versions, the A, B, and C series. The C Series features improved slot guidance, ventilation, stronger mounting plates, additional mounting plate holes, and additional ground screws for panel grounding. The 1756-A17 standard rack includes a built-in timestamp function for SOE applications. The backplane distributes power to each module in the rack by providing a high-speed communication path between modules. It requires Bulletin 1492 wiring IFM or RTB to connect all field wiring. The 1756-A17 standard rack provides easy-to-maintain RIUP functionality and provides electronic keying to prevent replacement errors. In the event of a system or field failure, it also provides comprehensive diagnostic capabilities to help identify the failure. It is compact, cost-effective, and easily compatible with projects such as PanelView operators