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high-performance dedicated power supply module designed for Field Control Units (FCU) and Node Units.As a core power supply component of Yokogawa DCS systems, it is only compatible with designated Yokogawa control equipment and shall not be used as a general-purpose power supply.
The module features wide-range AC input and regulated DC output, integrated with advanced power management and multiple protection technologies.It offers high stability, strong anti-interference capability and industrial-grade durability, providing continuous, clean and reliable power to the control system in harsh industrial environments, ensuring stable operation of field control and node units.

Technical Specifications
Electrical Parameters
Input voltage: 90~264V AC, wide-range compatibleInput frequency: 47~63Hz, suitable for global industrial power gridsRated power: 530VAOutput voltage: 12~24V DC, adjustable and regulated outputOutput current: up to 3A, supporting parallel power supply for multiple devicesVoltage regulation: ≤±1%, ensuring stable output under load fluctuationsRipple and noise: ≤50mV, low interference for precision control applications
Physical & Environmental Parameters
Ingress protection: IP20, dustproof and contact-proof, suitable for cabinet installationOperating temperature: -20℃~+70℃, compliant with G3 corrosion resistance requirementsStorage temperature: -40℃~+85℃Relative humidity: 5%~95%, non-condensingDimensions: 120mm × 100mm × 36mm, compact designNet weight: 0.34~0.4kg, lightweight for easy installationMounting method: panel mount or rack mount, compatible with industrial cabinet layouts

Code Interpretation
Each field in the model SPW482-53 S1 has a clear definition for easy identification of product specifications and configurations:
- SPW482: Base model, indicating a dedicated power supply module for Yokogawa Field Control Units (FCU) and Node Units.
- -5: Suffix code representing a standard version without explosion-proof protection.
- 3: Suffix code indicating compliance with ISA Standard G3 corrosion resistance class, with an extended operating temperature range of -20°C to +70°C.
- S1: Product version / custom identifier, representing a specific hardware or software configuration.
Functions & Technical Features
Wide-Range Adaptive Input
Supports universal 90~264V AC input worldwide, enabling compatibility with industrial power grids in different countries and regions without additional transformers, reducing system deployment complexity and costs.
High-Precision Stabilized Output
Adopts advanced switching power supply technology and closed-loop feedback control. The output voltage is continuously adjustable from 12~24V DC with voltage regulation ≤±1%. It maintains stable output even under severe load fluctuations, preventing control unit failures caused by voltage instability.
Multiple Safety Protection Mechanisms
Built-in overvoltage protection (OVP), overcurrent protection (OCP), over-temperature protection (OTP) and short-circuit protection. It automatically cuts off output under abnormal conditions to protect the module itself and backend control and node units, minimizing system failure risks.
Low Interference & High Immunity Design
Integrates advanced EMI filtering circuits to effectively suppress electromagnetic interference and reduce impacts on surrounding precision instruments and control signals. It also features strong anti-interference capability for stable operation in industrial sites with complex electromagnetic environments, avoiding system malfunctions due to signal interference.
Industrial-Grade Durability
Constructed with high-grade industrial components and compliant with ISA G3 corrosion resistance standards. It can operate stably for long periods in wide-temperature (-20℃~+70℃), high-humidity and corrosive gas environments. Its MTBF (Mean Time Between Failures) far exceeds general-purpose power modules, ensuring long-term reliable system operation.
Easy Installation & Maintenance
Compact and lightweight design supports both panel and rack mounting, compatible with standard industrial cabinet layouts. Dedicated connector interfaces enable convenient plug-and-play installation and replacement without complex wiring, reducing on-site maintenance time and difficulty.

Product Advantages Summary
- Dedicated Compatibility: Designed specifically for Yokogawa field control and node units, fully compatible with Yokogawa DCS systems, eliminating compatibility issues associated with general-purpose power supplies.
- High Reliability: Industrial-grade design with multiple protections, wide temperature range and corrosion resistance, meeting long-term operation requirements in harsh industrial environments.
- Easy Deployment: Wide voltage input, compact size and simple installation reduce system integration and maintenance costs.
- Strong Compliance: Certified to major international safety standards, suitable for global markets and industry regulations.

Applications
As a dedicated power supply module for Yokogawa DCS systems, the SPW482-53 S1 is mainly used in Yokogawa control systems including the CENTUM series and ProSafe-RS. Typical applications are as follows:
Industrial Process ControlProvides power for Field Control Units (FCU) in petrochemical, power, metallurgy, paper and other industries, meeting the power requirements of DCS systems for real-time control, data acquisition and logic operation.
Distributed Node UnitsSupplies power to remote node units and I/O modules in distributed control systems, ensuring stable communication between field devices and the central control system.
Harsh Environment ApplicationsCompliant with G3 corrosion resistance standards, suitable for corrosive environments such as chemical plants and offshore platforms, as well as extreme industrial sites with high and low temperatures.
System Expansion and RetrofitUsed for power supply expansion and replacement of aging modules in existing Yokogawa DCS systems, ensuring power supply compatibility and stability after system upgrades.
