PW484-11 Power Supply Module Yokogawa

Overview

Configured for AC-to-DC power conversion in Yokogawa CENTUM VP control architectures, the Yokogawa PW484-11 (PW484 Power Supply Module) provides direct electrical power distribution to compatible Field Control Units, FIO Node Units, and Optical ESB Bus Repeater Units. The module accepts 100-120 VAC input power at 50/60 Hz and supports installation in P1-P2 mounting slots for redundant power supply arrangements.

Hardware Specifications

Process Control Power Distribution Characteristics

The PW484-11 operates as part of the power infrastructure supporting Yokogawa DCS hardware. Its function differs from an analog or digital I/O module because it does not directly process 4-20 mA HART loop signals or fieldbus communication data.

Instead, the module converts the specified AC input supply into regulated DC power for compatible system hardware. Consequently, stable power distribution supports the operation of processing, communication, and I/O assemblies installed within the associated control architecture.

When two compatible power supply modules are installed in the designated P1-P2 positions, the system can support a redundant power supply arrangement. However, the actual redundancy behavior and system-level switchover characteristics depend on the compatible Yokogawa hardware configuration.

Frequently Asked Questions

Q: What input power does the Yokogawa PW484-11 require?
A: The PW484-11 accepts 100-120 VAC input power with a +/-10% voltage tolerance and operates at 50/60 Hz with a +/-3 Hz frequency tolerance.

Q: Can the PW484-11 be installed in a redundant configuration?
A: Yes. The provided specifications identify P1-P2 mounting slots and support for a dual power supply configuration. System-level redundancy operation depends on the compatible Yokogawa hardware.

Q: Does the PW484-11 directly connect to 4-20 mA or HART field devices?
A: No direct field signal interface is specified. The PW484-11 functions as a power supply module and uses an exclusive output connector for compatible system hardware.

Field Installation Guidelines

• Verify that the incoming supply matches the specified 100-120 VAC input range before installation.
• Isolate the external power source before inserting or removing the module.
• Install the module only in the designated compatible mounting position.
• Check connector engagement and mechanical retention before energizing the system.
• Route AC power wiring separately from low-level signal and communication cables where practical.
• Follow the grounding and protective earth requirements specified for the complete Yokogawa control cabinet.
• For redundant configurations, verify that both power modules and their associated input supplies meet the system installation requirements.
• Do not exceed the specified maximum power consumption of the installed control system configuration.

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