YOKOGAWA PW481 Power Module Style S2 100-120VAC 50 60Hz

Description:

The Yokogawa PW481 Power Module (Style S2, 100–120VAC, 50/60Hz) is used an industrial power supply module designed specifically for Yokogawa CENTUM VP and FIO/FCU control systems. It provides regulated system power to CPU, I/O, and communication modules within distributed control systems. This module is not a general-purpose power supply it is engineered exclusively for Yokogawa control architectures and supports high-reliability industrial operation with optional redundant configurations.

Applications:

The Yokogawa PW481 is used in industrial environments to supply stable power to PLC and DCS control systems. It is commonly deployed in chemical processing, power generation, manufacturing, and process automation systems. The module ensures reliable operation of CPU, I/O, and communication modules, supporting continuous system uptime and stable plant operation.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: PW481 (Style S2)
• Product Type: Power Supply Module (DCS/PLC)
• Input Voltage: 100–120 VAC ±10%, 50/60 Hz
• Current Rating: ~2.5 A
• Power Consumption: ~200 VA
• Function: Supplies internal system power to control modules
• System Compatibility:
• FCU (Field Control Unit)
• FIO Node Units
• Optical ESB Bus Repeater Units
• Installation: Rack/base module (slot P1–P2)
• Redundancy: Supports dual-redundant configuration (2 modules)
• Weight: ~1 kg
• Interface: Dedicated backplane connector
• Application Role: Internal power distribution for DCS systems

Common Replacements:

• Yokogawa PW482 (220–240VAC version)
• Yokogawa PW484 (24VDC version)
• Yokogawa NFPW441 / NFPW444 (newer STARDOM systems)