Allen-Bradley 1771-P7 is a stand-alone power supply module for PLC-5 1771 I/O racks, delivering 5 V DC at up to 16 A to power a single I/O chassis when used with compatible adapters or PLC-5 processors that lack an internal power supply. It accepts nominal 120 or 220 VAC input with ranges 97–132 VAC or 195–264 VAC and operates at 47–63 Hz, with a maximum real input power of 108 W. Backplane output is 16 A at 5 V DC, and the package measures 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm) with a 3 A, 250 V normal-blow fuse.
