Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | PW482-10 |
| Manufacturer | Yokogawa |
| Product Type | AC Input Power Supply Module |
| Series | PW48x |
| Input Voltage | 220–240 VAC |
| Input Voltage Range | 198–264 VAC, commonly specified as ±10% |
| Frequency | 50/60 Hz |
| Maximum Power Consumption | Approx. 230 VA |
| Redundant Operation | Supported with two compatible modules |
| Primary Systems | CENTUM VP / CENTUM CS 3000 |
| Compatible Unit Types | FCU, FIO Node Unit, Optical ESB Bus Repeater Unit |
| FCU Examples | AFV30D/S, A2FV50D/S, A2FV70D/S |
| FIO Node Examples | ANB10D/S, ANB11D/S |
| Optical ESB Unit | ANT10U |
| Operating Temperature | -20°C to +70°C with applicable G3 option |
| Interface | Dedicated Yokogawa power connector |
| Approx. Dimensions | 50 × 150 × 200 mm |
| Approx. Weight | 0.9–1.0 kg |
The available technical references consistently identify PW482-10 as a Yokogawa power supply module for FCU, FIO Node, and Optical ESB Bus Repeater applications. One source specifically states that the PW48x family uses dedicated system connections and should not be treated as a generic standalone power supply.
A procurement caution: some secondary listings publish conflicting output-current and output-voltage figures. Those should not be copied into a plant specification without the applicable Yokogawa hardware specification. The safer identification is the complete PW482-10 model and its intended Yokogawa chassis/application.
Application Scenarios & Pain Points
When a Yokogawa DCS node loses power, replacing the module is usually preferable to disturbing the FCU or FIO architecture. The catch is that the PW482-10 is system-specific hardware, not a generic DIN-rail AC/DC converter.
- CENTUM VP Field Control Units: The PW482-10 can be installed in compatible FCU configurations where the specified AC input is available.
- FIO Node Units: Applicable to listed ANB-series FIO node configurations. This is particularly useful for maintenance of remote I/O infrastructure where losing the node can affect numerous field loops at once.
- Optical ESB Bus Repeater Units: The module is also listed for compatible ANT10U optical ESB repeater applications.
- Redundant DCS power architecture: Two identical compatible power modules can be installed to provide redundant power. The redundancy arrangement should be verified against the exact chassis and system configuration rather than assumed from the module alone.
Field note: Before replacing a failed PW482-10, inspect the input connector and mating backplane contacts. Heat discoloration, looseness, or oxidation can create symptoms that look like a failed power module.
PW482-10
Related Products
- Yokogawa PW481-10 — Related PW48x power module intended for a different AC input range. It should be selected according to the plant supply and chassis specification, not simply because the mechanical family is similar.
- Yokogawa PW484-10 — Another PW48x family variant associated with a different power-input architecture. It is relevant when the control system uses a DC power source rather than the AC input expected by .
- Yokogawa S2 — A related configuration. The suffix matters because the electrical characteristics and intended installation can differ from the srd .
- Yokogawa AFV30D — Compatible FCU family member listed for PW48x power-module installation. It is an application chassis, not a substitute he .
- Yokogawa AFV30S — Single-configuration FCU variant associated with the PW48x power architecture. Confirm the exact FCU configuration before ordering.
- Yokogawa ANB10D — FIO Node Unit compatible with the PW48x family. The node provides the I/O infrastructurle supplies the required system power.
- Yokogawa ANB11D — Another compatible FIO Node Unit configuration. Useful when tracing the exact installed hardware in a CENTUM system.
- Yokogawa ANT10U — Optical ESB Bus Repeater Unit listed as a compatible installation location for PW48x power modules.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do noat as a generic 220 VAC power supply.
The module is designed for specific Yokogawa FCU/FIO/Optical ESB hardware. Its output interface and system integration are dedicated to the Yokogawa architecture.
How to avoid it: Verify the chassis model, slot position, installed power-module type, and cte marking before replacement.
⚠️ Do not substitute PW481 and solely because the modules look similar.
The PW48x family includes different input-voltage variants. The wrong module can create an immediate compatibility problem with the plant power source.
How to avoid it: Check the actual incoming AC voltage and the original module’s nameplate before purchasing.
⚠️ Do not ignore the redundant power configuration.
A system designed around two power modules may behave differently during replacement if only one module is changed or if the remaining module has degraded.
How to avoid it: Check both modules, their status indications, input feeds, and backplane connections during planned maintenance.
Frequently Asked Questions (FAQ)
What is Ywa ?
The is a Yokogawa AC input power supply module used in specific DCS hardware, including compatible Field Control Units, FIO Node Units, and Optical ESB Bus Repeater Units.
What input voltaes require?
The commonly documented operating input is 220–240 VAC, with a stated range of approximately 198–264 VAC. The supply frequency is 50/60 Hz.
an be used with CENTUM VP?
Yes, it is associated with compatible CENTUM VP hardware and is used in FCU/FIO/Optical ESB infrastructure supporting the control system. The exact FCU or node model should still be verified before installation.
wo modules be installed together?
Yes. The available hardware documentation states that dual-redundant power supply can be configured by installing two modules in compatible equipment.
Is interchangeable with PW481-10?
Not automatically. They belong to the same general PW48x family but are associated with different input-power configurations. Verify the plant AC supply and the exact Yokogawa equipment specification before substitution.
es provide a standard 24 VDC output?
It should not be treated like a conventional external 24 VDC power supply. The PW48x modules use dedicated Yokogawa system interfaces and are intended for specific FCU/FIO/Optical ESB equipment. One technical source explicitly cautions that the module is not a generic power supply.
