YOKOGAWA PW502 Power Supply Module

YOKOGAWA PW502 Power Supply Module

The Yokogawa PW502 is an industrial power supply module used in Yokogawa DCS systems (CENTUM / ProSafe-RS related architectures). It provides stable DC power for system controllers, I/O modules, and field interface units.

Basic Information

• Part Number: PW502
• Brand: Yokogawa
• Type: Power Supply Module
• Function: AC to regulated DC power conversion for control system equipment

Technical Specifications

Based on commonly used system data:

• Input Voltage: 100–240 VAC
• Output Voltage: 24 VDC
• Output Power: approx. 1200 W
• Output Current: up to 50 A
• Efficiency: ~90%
• Operating Temperature: approx. -20°C to +70°C
• Protection: overload, overvoltage, thermal protection
• Design: redundant / industrial rack power system support

Key Features

• High-power 24V DC output (industrial grade)
• Designed for DCS and safety instrumented systems
• Supports redundant power architecture (high reliability systems)
• Stable operation for continuous 24/7 industrial environments
• High efficiency and low heat generation
• Hot-swappable design (system dependent configuration)

Application Areas

• Oil & gas control systems
• Petrochemical plants
• Power generation stations
• Refinery automation systems
• Water treatment DCS systems
• Industrial process control (CENTUM VP / ProSafe-RS)

System Role (Important)

The PW502 acts as the main power backbone in Yokogawa control systems:

• Supplies stable 24V DC power to I/O modules
• Supports controller and communication modules
• Works in redundant configurations for high availability
• Ensures uninterrupted DCS operation

Advantages

• High output power (suitable for large DCS racks)
• Industrial reliability for critical systems
• Redundant power support improves system uptime
• Stable voltage output reduces system faults
• Widely used in Yokogawa CENTUM installations worldwide

Precautions

• Must be installed in compatible Yokogawa rack system
• Ensure correct AC input range (100–240 VAC)
• Do not overload beyond rated 24V/50A output
• Proper ventilation required due to high power output
• Redundant configuration wiring must follow OEM design