Product Overview

The Yokogawa SPW482-50 serves as a high-integrity power core for Field Control Stations (FCS), I/O nodes, and system processors within the CENTUM VP and CS 3000 Distributed Control System (DCS) architectures. This module converts AC mains into regulated 24V DC power to drive critical control logic. We supply this unit as 100% Brand New and Original, made in Japan, ensuring your process environment maintains maximum uptime through superior electrical stability and modular redundancy.

Part Number Breakdown: SPW482 Series

Technical Specifications

Engineering Advantages

• Fault-Tolerant Redundancy: The SPW482-50 supports dual-redundant operation with active load sharing. If one module fails, the paired unit assumes the full load instantly without causing a system voltage dip, preventing expensive process trips in oil, gas, and petrochemical facilities.

• High Thermal Efficiency: Utilizing a high-efficiency design (≥85%), this module minimizes heat dissipation within sealed DCS cabinets. Natural convection cooling eliminates the need for mechanical fans, which often serve as a common point of failure in dusty or harsh industrial environments.

• Galvanic Protection Suite: Integrated over-voltage and over-current protection circuits shield sensitive system processors from upstream electrical transients. The module also features a thermal shutdown mechanism that prevents internal damage during abnormal cabinet temperature spikes.

• Precision Voltage Regulation: The unit maintains a 24V DC output within a strict ±1% tolerance. This precision ensures that analog I/O signals remain accurate and that field instruments receive consistent power, even during fluctuations in the main AC supply.

• DCS-Specific Integration: Unlike general-purpose power supplies, the SPW482-50 includes specific status indicators for power, alarm, and communication. These LEDs allow maintenance engineers to diagnose power health directly from the cabinet faceplate during routine inspections.

FAQs

• Can the SPW482-50 be used in a 110V AC environment? No. The SPW482-50 is rated for 220-240V AC. For 100-120V AC systems, you must select the appropriate Yokogawa variant (such as the SPW481) to ensure hardware compatibility and safety.

• How do I confirm the redundancy is working correctly? The module features dedicated LED indicators. When installed in pairs, both "Power" LEDs should remain green. If an alarm LED triggers or the "Power" LED extinguishes on one unit, the secondary unit has assumed the load, signaling that you should replace the faulty module.

• Does this module require external cooling fans? The SPW482-50 uses natural convection for cooling. To maintain optimal performance, ensure the DCS cabinet provides adequate ventilation and adheres to the specified spacing requirements for Yokogawa modular units.

• Why is "Brand New" condition critical for power modules? Power supplies contain electrolytic capacitors that degrade with time and heat. Used or refurbished units often have significantly reduced MTBF (Mean Time Between Failures). A 100% Brand New SPW482-50 guarantees a full service life and ensures the voltage regulation remains within the ±1% specification required for DCS stability.