Allen-Bradley 1771-P5EK Power Supply Module

Feature & Principle

It is a chassis power supply for Rockwell 1771 universal I/O rack. It accepts 24VDC input and converts it to stable 5VDC to feed the backplane for all I/O modules in the rack. It occupies two adjacent slots and supports parallel connection to increase total load capacity. Integrated overcurrent and short-circuit protection, power OK LED status indication. This model is discontinued and widely used for replacement of old PLC-5 control cabinets.

Specifications

Model: 1771-P5EK Brand: Allen-Bradley (Rockwell Automation) Input: 20.5 ~ 30 VDC (nominal 24VDC) Output: 5VDC, max 8A Power rating: 57W Chassis: 1771 universal I/O chassis Slot occupation: 2 slots Protection: Overcurrent, short circuit protection Status indicator: Power OK LED Application: Petrochemical, water treatment, production line legacy PLC cabinet Certification: CE, UL

Components & Diagnostics

Power conversion PCB, input fuse, isolation circuit, backplane connector, status LED. Common faults: blown fuse, no 5V backplane output, unstable voltage, overheat shutdown, backplane short circuit trigger protection.

Product Brief

1771-P5EK power supply module, Allen-Bradley 1771 rack 24VDC input power spare widely used for legacy PLC cabinet overhaul and replacement.