Yokogawa Electric Corporation ADV551-P60 S2 Digital Input Module

The Yokogawa ADV551-P60 S2 Digital Input Module is a 32-channel, rack-mounted I/O module designed to acquire discrete 24 VDC ON/OFF signals from field devices for CENTUM DCS and related Yokogawa control systems. It supports dual-redundant configurations to enhance reliability in continuous industrial processes, and it consumes about 50 mA of system current (module dependent). Each channel accepts standard 24 VDC ON/OFF inputs from switches, relays, proximity sensors, and contact inputs, enabling real-time monitoring of valve positions, motor states, and alarm conditions in oil & gas, power generation, and manufacturing environments. It integrates with Yokogawa CENTUM / FIO DCS platforms for plant-wide signal acquisition and status monitoring, and is commonly used to expand digital input capacity or replace failed I/O modules. Common replacements include Yokogawa ADV151-P60 and ADV161 digital input modules, as well as ADM12C, reflecting its role in maintaining robust discrete input capability across established automation architectures.