Yokogawa PW482-10 S2 Style Power Supply 24V DC

Product Overview

The Yokogawa PW482-10 (PW482 10) serves as the primary energy regulation hub for CENTUM VP and CS 3000 Distributed Control Systems (DCS). This 100% brand new, original power supply module converts wide-range AC input into stable, filtered DC voltages required by CPU processors, communication interfaces, and I/O modules. Engineered for the rigors of 24/7 industrial operations, the PW482-10 maintains logic integrity by suppressing line noise and protecting sensitive downstream electronics from power surges. Its high-efficiency design ensures consistent power delivery to mission-critical Field Control Units (FCU), making it a cornerstone of plant-wide automation reliability.

Part Number Breakdown

Yokogawa PW482 series modules utilize specific coding to define protection levels and thermal tolerances:

Technical Specifications

The PW482-10 combines global voltage compatibility with heavy-duty industrial shielding.

Engineering Advantages

The Yokogawa PW482-10 resolves critical power distribution challenges in complex automation environments:

• ISA G3 Corrosive Environment Shielding: The module incorporates a specialized conformal coating that meets ISA Standard G3 requirements. This prevents hardware failure in plants with high concentrations of sulfur, chlorine, or other corrosive gases, which typically degrade standard copper circuitry.

• Global Grid Adaptability: The wide-range 100–240 V AC input capability allows for worldwide deployment without the need for external step-down transformers. The internal regulator manages frequency fluctuations (50/60 Hz) to deliver a perfectly flat DC output rail.

• Fault-Tolerant Redundancy Support: Most CENTUM VP backplanes allow for dual PW482 installations. In a redundant setup, the modules share the load; if one unit fails, the other assumes the full electrical load instantaneously, preventing a system-wide reboot or process trip.

• Proactive Protection Logic: Internal hardware monitors for overvoltage and short-circuit conditions. If a field-side short occurs, the PW482-10 isolates the fault to protect the multi-thousand dollar CPU and I/O modules, sacrificing itself if necessary to preserve system-wide data integrity.

FAQs

• Can I replace a PW482-10 Style S1 with a Style S2?

  Yes. Style S2 represents a hardware revision that improves internal efficiency and thermal management while maintaining full backward compatibility with Style S1 backplanes and connectors.

• Does the module require external cooling fans?

  The PW482-10 relies on natural convection and the airflow design of the Yokogawa cabinet. Ensure that the rack ventilation remains unobstructed to prevent the thermal protection circuit from triggering a shutdown.

• Is the backup battery included with the power supply?

  No. The PW482-10 provides the DC power rails. Data retention during a total power loss (RAM backup) is handled by the battery located on the CPU module (such as the CP451 or CP461), not the power supply unit.

• What is the significance of the G3 option for this module?

  The G3 option extends the operational temperature range and adds a protective layer against "harsh" atmospheric conditions. If your control room is located near a chemical reactor or wastewater facility, the G3 version is mandatory to prevent premature oxidation of the module's internal components.