YOKOGAWA PW482-10 AC Input Power Module
The Yokogawa PW482-10 is a robust AC Input Power Supply Module designed specifically for the CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS).
It is a high-capacity unit responsible for providing stabilized DC power to the internal logic and field-side components of the system.
1. Introduction
The PW482-10 is an essential infrastructure module that can be installed in Field Control Units (FCU), FIO Node Units, and Optical ESB Bus Repeater Units.
Unlike the PW481 (which is 100V-centric), the PW482 is typically used in regions or plants with 220-240V AC infrastructure.
It is designed to operate in a dual-redundant configuration, ensuring that the control system remains online even if one power module or power feed fails.
2. Technical Parameter Table
| Feature | Specification |
| Model | PW482-10 |
| Input Voltage | 220 to 240 V AC |
| Input Voltage Range | 198 to 264 V AC (±10%) |
| Frequency | 50/60 Hz (±3 Hz) |
| Max Power Consumption | 230 VA |
| Operating Temperature | -20°C to +70°C (with G3 option) |
| Weight | Approx. 1.0 kg |
| Redundancy | Supported (Dual-redundant with 2 identical modules) |
| Input/Output Interface | Exclusive Yokogawa connector |
| Dimensions | Approx. 50 (W) x 150 (H) x 200 (D) mm |
3. Product Advantages and Features
High Reliability: Engineered for 24/7 continuous industrial operation with a long MTBF (Mean Time Between Failures).
Dual Redundancy: Two modules can be installed in slots P1 and P2 of the backplane to provide a “bumpless” failover, ensuring the CPU and I/O remain powered during a fault.
Wide Environmental Tolerance: When equipped with the S1 option, it includes an ISA Standard G3 conformal coating to protect against corrosive gases and extreme temperatures.
Diagnostic Outputs: Includes internal monitoring for output health, which communicates directly with the FCS to trigger system alarms on the operator’s console.
Integrated Protection: Features built-in overcurrent and overvoltage protection to prevent field-side surges from damaging expensive processor modules.
PW482-10
4. Application Cases
Offshore Oil & Gas: Providing power to N-IO and FIO nodes in corrosive salty environments where uptime is critical.
Petrochemical Plants: Powering Field Control Stations (AFV30/40) in 220V regions.
Remote I/O Nodes: Supplying DC power to analog and digital modules located in remote satellite instrument houses (SIH).
Power Generation: Ensuring continuous power for safety-critical control loops in boiler and turbine management.
| BENTLY | 3500/22 |
| BENTLY | 3500/93 135799-01 |
| BENTLY | 3500/92 136180-01 |
| BENTLY | 3500/15 114M5330-01 |
| BENTLY | 3500/42M 140734-02 |
| BENTLY | 3701/55 289761-01 |
| BENTLY | 3500/42M 140734-99 |
| BENTLY | 3701/55 323174-01 |
| BENTLY | 3500/93 135785-02C |
| BENTLY | 330876-03-50-00-00 |
| BENTLY | 3500/65 145988-02 02E |
5. Related Models & Same Series
The PW48x series consists of three main power variants based on the available input source:
Other Models in the Same Series
PW481-10: The 100-120 V AC input version.
PW484-10: The 24 V DC input version (ideal for battery-backed systems).
Compatible Units
FCU Models: AFV30S, AFV30D, AFV40S, AFV40D, A2FV50.
FIO Node Units: ANB10D, ANB11D, ANB11S.
Bus Repeaters: ANT10U (Optical ESB Bus Repeater Unit).