The Allen-Bradley 5110-A4 Pyramid Integrator 4 Slot Chassis is a 4-slot chassis in the Allen-Bradley Pyramid Integrator System which provides a backplane for the processor module, and also a platform for other PI modules to be installed. The chassis is installed in either a panel mounting configuration or a rack mounting configuration by using a mounting bracket, and it is designed to accommodate a maximum of 4 Allen-Bradley CVIM modules. The 5110-A4 chassis is compatible with the Allen-Bradley 5120-PI Series A and B power supply modules, and the power supply module is attached to the leftmost slot of the chassis, which is dedicated to the power supply. 

The 5110-A4 chassis requires a power supply with an input range of 90 to 132V AC, and it supplies 5V DC output voltage at 35A, and 12V DC output voltage at 800mA. The chassis supplies backplane power to the various I/O modules installed in its slots, it supplies 2.18A and 0.0139A of backplane current to installed remote I/O scanner at 5V DC and 12V DC, and it also supplies 2.9A and 0.07A currents to a Data-Highway interface module installed on its slot. The 5110-A4 PI chassis is Rack installed by placing the mounting bracket in front of the chassis, and it is fastened by using 10 x 32 screws and lock washers. The position of every installed device is then marked on the mounting bracket and in 2 clearance holes (10 x 32 screws) drilled for every component that will be installed on the rack, and each component is then attached to the rack. The chassis’s operating temperature range is 0 to 60° C at 5-95% relative humidity, non-condensing, and the 5110-A4 weighs approximately 2.5Kg (5lb), with total dimensions of 406mm x 309mm x 256mm (16in x 12.13in x 10.08in).