PU30-0S Yokogawa

PU30-0S Yokogawa Power Board

Product  Description：

Yokogawa Power Boards are high-reliability power supply modules and internal energy distribution circuits designed for Yokogawa’s core control systems, such as the CENTUM Distributed Control System (DCS) and Stardom controllers. These boards are responsible for converting external plant power into the stable, low-noise DC voltages required by central processing units, communication modules, and input/output cards. Engineered for continuous operation in mission-critical environments, they play a vital role in maintaining system availability and preventing process downtime.

Product Parameters

The technical parameters of Yokogawa Power Boards emphasize voltage stability, efficiency, and high insulation capability:

• Input Voltage Configurations: Universally compatible with standard industrial power inputs, including 100-120V AC, 220-240V AC, and 24V DC systems.

• Output Voltage Precision: Delivers highly regulated DC power rails (typically 5V DC for logic and 24V DC for field circuits) with a ripple and noise tolerance kept below 50 millivolts.

• Holdup Time: Features integrated energy storage capable of maintaining stable output for at least 20 milliseconds during temporary input voltage drops, allowing the system to ride through minor power grid fluctuations.

• Efficiency Rating: Advanced synchronous rectification design achieving up to 88 percent efficiency, which limits internal heat generation within the system rack.

• Dielectric Strength: Provides robust isolation between the primary power line and internal system circuitry, typically rated to withstand 1500V AC or higher for 1 minute.

• Leakage Current Limits: Exceptionally low leakage current design to comply with strict industrial safety standards and prevent noise injection into sensitive control loops.

Product Advantages

Yokogawa Power Boards are recognized for their exceptional durability and intelligence in high-availability applications:

• Dual Redundancy Support: Designed to operate in a parallel redundant configuration, allowing a secondary power board to seamlessly take over the full load if the primary board fails, without interrupting the control process.

• Advanced Diagnostic Output: Equipped with dedicated hardware monitoring circuits that provide real-time status signals (such as "Power OK" and temperature warnings) to the system CPU for predictive maintenance.

• Enhanced Surge and Transient Protection: Built-in heavy-duty metal oxide varistors and gas discharge tubes protect the internal system from high-voltage surges caused by lightning or inductive switching on the plant grid.

• Long Operational Lifespan: Component selection focuses on industrial-grade, long-life electrolytic capacitors rated for high temperatures, ensuring a design life that matches the decade-long cycles of industrial plants.

• Seamless Rack Integration: Features plug-and-play mechanical alignment pin configurations that ensure proper electrical contact and secure grounding when slid into a compatible base unit.

Product Applications

These power boards act as the foundational energy source across numerous continuous process industries:

• Petrochemical and Chemical Plants: Supplying uninterrupted power to the control modules managing critical distillation, cracking, and blending processes.

• Oil and Gas Production: Powering the distributed control nodes on offshore platforms, pipelines, and liquefied natural gas (LNG) processing facilities.

• Power Generation Stations: Sustaining the operation of safety systems, turbine controllers, and water-steam cycle monitoring equipment in nuclear and thermal power utilities.

• Iron and Steel Manufacturing: Providing stable energy to control racks operating near blast furnaces where heavy electrical machinery creates severe power grid disturbances.

• Municipal Infrastructure: Driving the telemetry and control logic units in large-scale water treatment, desalination, and sewage management networks.

Important Precautions

To maintain the safety and integrity of the power system, technicians must observe the following precautions:

• High Voltage Residual Charge: Internal capacitors can hold dangerous electrical charges even after external power is disconnected. Always wait at least 3 to 5 minutes for the internal bleed resistors to discharge the energy safely before handling the board.

• Proper Redundancy Balance: When replacing a power board in a redundant setup, ensure that both boards are set to the same voltage specifications to maintain correct load sharing and prevent one module from overloading the other.

• Cleanliness and Ventilation: Do not operate the power board in environments with high levels of conductive dust or corrosive gases. Accumulation on the board can cause localized overheating or short circuits across high-voltage traces.

• Secure Grounding Connections: Ensure that the grounding terminals on the board and the base unit rack are securely bonded to a high-quality instrument earth ground to optimize noise filtration and ensure user safety.

• Tightness of Input Terminals: When wiring the power input terminals, use the manufacturer-specified torque to tighten all terminal screws. Loose connections can lead to increased electrical resistance, localized heating, and potential hardware damage or fire risk.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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JUSTWELL PTE. LTD

Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.