Allen-Bradley 1771-P7 AC Power Supply is a stand-alone external power supply for the 1771 I/O backplane, used to power a single 1771 I/O chassis in older PLC-5/1771 systems. It accepts 120/220 VAC input and is capable of delivering up to 16 A to the backplane, supporting 1771-A1B, -A2B, or -A3B I/O chassis. Rockwell Automation lists the 1771-P7 as discontinued as of March 31, 2021. This power module is specifically designed to provide backplane power for 1771 I/O modules within the 1771 I/O family.
