PW484-11 | Yokogawa CENTUM VP 100-120V AC Power Supply Module

Product Description

The PW484-11 is a specialized AC-to-DC power conversion module engineered for Yokogawa’s CENTUM VP Distributed Control System (DCS). This hardware provides the high-stability logic power required by Field Control Units (FCU), FIO node units, and Optical ESB Bus Repeater modules. Designed for high-availability environments, the PW484-11 ensures that the control backplane receives a regulated voltage supply, shielding sensitive internal processors from input line fluctuations.

Built for mission-critical infrastructure, the module occupies the P1 and P2 slots of the node unit, allowing for a dual-redundant power configuration. This architecture enables seamless failover; should one module lose input power, the redundant partner immediately assumes the full electrical load without interrupting the process control intelligence. Its compact Japanese engineering facilitates high-density mounting in industrial control cabinets, providing long-term reliability for continuous 24/7 operations.

Technical Specifications

• Brand: Yokogawa Electric Corporation

• Model Designation: PW484-11

• Component Category: Industrial Power Supply Module

• Input Voltage Requirement: 100–120 V AC (Tolerance: ±10%)

• Input Frequency: 50/60 Hz (Tolerance: ±3 Hz)

• Maximum Power Consumption: 200–230 VA

• Mounting Positions: Standard P1–P2 redundant slots

• Interconnect: Proprietary high-security exclusive connector

• Physical Mass: Approximately 1.0 kg

• Dimensions: 49.7 mm (W) × 199.5 mm (H) × 149 mm (D)

• System Environment Compatibility: CENTUM VP DCS, FIO Node Units, Optical ESB Repeater Units

• Manufactured In: Japan

• Operating Profile: Continuous duty in heavy industrial environments

Operational Applications

The PW484-11 (PW484-11) is predominantly utilized in the primary control racks of oil refineries, chemical processing plants, and power utilities. It is the preferred power solution for FIO (Field Input/Output) nodes where reliable communication with the central controller is paramount. Its vibration-resistant and thermally optimized design makes it suitable for onsite control rooms located near heavy machinery.

FAQ

Can I mix the PW484-11 with different PW48x models in a redundant setup?

For optimal electrical balancing and synchronization of the redundancy logic, it is highly recommended to use two identical PW484-11 modules. Mixing different revisions or voltage types can lead to premature wear or system alarms.

What are the primary symptoms of a failing power module?

Usually, the system will trigger a "PSU Alarm" on the HIS (Human Interface Station). Physically, the status LED on the front of the PW484-11 will change from green to red or turn off entirely, indicating an input failure or internal fault.