SKU: PW481-50 S2

Yokogawa PW481-50 S2 CENTUM VP High-Performance Power Supply Module

The Yokogawa PW481-50 S2 is a high-reliability AC Power Supply Module designed for CENTUM VP Field Control Units. Featuring a redundant, hot-swappable architecture and robust noise filtering, it ensures continuous DC power delivery for critical industrial automation and DCS applications.

Product Description

The Yokogawa PW481-50 S2 functions as a vital energy distribution component for the CENTUM VP and CENTUM CS 3000 Integrated Control Systems. This module converts standard alternating current into a stabilized DC output, which subsequently powers the Field Control Unit (FCU) and its associated I/O modules. Because industrial environments often face power instability, the PW481-50 S2 incorporates sophisticated surge protection and noise filtering to safeguard sensitive internal logic from electrical interference.

Moreover, the PW481-50 S2 supports redundant installation within the power supply slot of the rack. This configuration allows two modules to operate in parallel, whereby they share the electrical load under normal conditions. If one module detects an internal fault, the secondary unit immediately compensates for the full power demand, thereby preventing any interruption to the process control logic. This “hot-swappable” capability ensures that maintenance personnel can replace a faulty unit without powering down the entire controller, which significantly maximizes system uptime in continuous production facilities.

Key Technical Characteristics

Manufacturer: Yokogawa Electric Corporation
Model Identification: PW481-50 (Style S2)
Module Type: AC Power Supply Module
Input Voltage Range: 100 V to 120 V AC (Nominal)
Frequency Compatibility: 50/60 Hz
Output Stability: Regulated DC power for FCU backplanes
Redundancy: Supports dual-redundant load sharing
Installation: Slot-mounted design for Field Control Units
Cooling: Passive convection with optimized thermal dissipation
Status Monitoring: Integrated LED indicators for “Ready” and “Fault” conditions

Operational Applications

Plant operators utilize the PW481-50 S2 across various sectors that require high-availability Distributed Control Systems (DCS). Specifically, the module delivers consistent performance in the following areas:

Refinery Control Rooms: Powering the primary controllers that manage distillation and cracking units.
Chemical Processing: Ensuring the constant operation of safety-critical temperature and pressure monitoring loops.
Power Generation: Providing stable energy to control units managing turbine synchronization and grid output.
Water Treatment Facilities: Maintaining the logic controllers that oversee complex filtration and chemical dosing sequences