Yokogawa PW482-S01 Power Supply Module

Configured for power distribution in Centum VP/CS 3000 systems, the Yokogawa PW482-S01 (PW482-S01 Power Supply Module) provides direct electrical execution of AC-to-DC conversion for FCU, FIO, and ESB bus hardware.

Hardware Specifications

Yokogawa DCS Process Control Characteristics

• Channel-to-Channel Isolation: The module incorporates galvanic isolation between the AC input and DC output stages, preventing potential surges on the facility power grid from propagating to the sensitive internal bus of the FCU or FIO nodes.
• 4-20 mA HART Loop Protocol: While this module functions as a power supply, it is engineered to maintain stable DC output voltage during transient loads, ensuring that field-side 4-20 mA HART loops powered by downstream I/O modules remain within their operational DC voltage stability limits.
• Cold Junction Compensation (CJC): The power module architecture is designed to minimize localized heating within the cabinet, thereby assisting in the maintenance of stable thermal conditions necessary for accurate CJC performance on adjacent analog input modules.
• System Integration: The proprietary interface connector provides a secure, vibration-resistant power delivery path specifically tuned to the impedance requirements of the Optical ESB Bus Repeater Unit.

Frequently Asked Questions

Q: Is the PW482-S01 suitable for general-purpose 24 VDC instrumentation power?

A: No. This module is a dedicated power supply exclusively compatible with specific Yokogawa units (FCU, FIO Node, and Optical ESB Bus Repeater). It is not designed for general-purpose field instrumentation power distribution.

Q: Does the module support hot-swapping under full load?

A: Yes, the module supports replacement within the supported Yokogawa chassis; however, users must adhere to system-specific maintenance procedures to ensure the load is balanced or redundant power is verified before extraction.

Field Installation Guidelines

• Mounting: Seat the module firmly into the designated slot of the Yokogawa chassis. Tighten the front-panel retaining screws to ensure proper electrical ground contact with the chassis frame.
• Input Wiring: Connect 220-240 VAC to the module terminals using appropriately sized conductors. Ensure the supply circuit is protected by a dedicated breaker sized for the 230 VA load.
• Grounding: Bond the chassis to the facility instrumentation ground bus to maintain a consistent reference for the internal DC power regulation.
• Environment: Ensure the cabinet ventilation system is operational. The PW482-S01 requires consistent air movement to prevent internal thermal accumulation during peak 230 VA load conditions.