Yokogawa Electric Corporation PW481-11 Power Supply Module

The Yokogawa PW481-11 Power Supply Module is an industrial AC input power module designed for Yokogawa CENTUM and FIO/FCU distributed control systems, converting 100–120 VAC ±10%, 50/60 Hz input into a regulated ~24 VDC supply for CPU, I/O, and communications modules to ensure stable system operation. Engineered specifically for Yokogawa control architectures and not intended for standalone use, it supports dual-redundant configurations in a rack/base installation across slots P1–P2 and delivers ~2.5 A at ~24 VDC with ~200 VA power consumption. System compatibility includes Field Control Unit (FCU), FIO Node Unit, and Optical ESB Bus Repeater Unit. Common applications include powering PLC and DCS control systems in chemical processing, power generation, manufacturing, and process automation environments where continuous, reliable power to CPU, I/O, and communications modules is required. Common replacements include PW481-50, PW482, PW484; product status is Active with replacement variants available.