Product Overview

The PW484-51 (Model: PW484-51) is a high-availability DC-to-DC power supply module engineered for the Yokogawa CENTUM VP and CS 3000 Distributed Control Systems (DCS). Operating as a core infrastructure component, the PW484-51 (Style S1) facilitates the conversion and regulation of input power into a stable 24V DC bus to energize control processors, I/O modules, and complex communication interfaces.

This "Style S1" hardware revision represents an updated design over the legacy PW484-50, featuring improved component longevity and superior thermal efficiency. Built for mission-critical reliability, the PW484-51 (Part Number: PW484-51) supports 1:1 dual-redundant configurations. In a duplex setup, two modules share the system load; should one unit experience a fault, the partner module assumes full power delivery instantaneously, ensuring zero process downtime and protecting the integrity of real-time control logic.

Detailed Technical Specifications

The PW484-51 provides a robust electrical foundation with integrated diagnostics and protection circuitry.

• Manufacturer: Yokogawa Electric Corporation (Japan)

• Model Number: PW484-51

• Hardware Revision: Style S1

• DCS Compatibility: CENTUM VP, CENTUM CS 3000

• Product Type: DC Input Power Supply Module

• Input Voltage: 24 V DC Nominal

• Input Voltage Range: 19.2 V to 31.2 V DC (Typical DCS compliance)

• Output Voltage: Regulated DC for system backplane bus

• Output Current: 5.0 A continuous (Load dependent)

• Redundancy: Supports 1:1 Dual-redundant "Pair & Spare" architecture

• Efficiency: Typically >85% at full rated load

• Protection Logic: Overvoltage, Overcurrent, and Short-circuit protection

• Diagnostic Indicators: Front-panel LEDs for HRDY (Ready), ALM (Alarm), and Status

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -20°C to +85°C

• Net Weight: 0.9 kg (1.98 lbs)