SDV144-S53/STB4S-10 Yokogawa

SDV144-S53/STB4S-10 Yokogawa Power Board

Product  Description：

Yokogawa Power Boards are highly specialized, industrial-grade power management components designed primarily for use within Yokogawa’s distributed control systems (DCS), such as the CENTUM series, as well as high-precision measuring instruments and analyzers. These boards are engineered to receive raw input power from an external source and precisely convert, regulate, and distribute it as clean, low-noise DC power to sensitive control processors, I/O modules, and backplane circuits. Built for mission-critical industrial environments, they ensure that continuous processes remain powered and stable without interruption.

Product Parameters

The technical parameters of Yokogawa Power Boards reflect their placement in high-availability and high-precision control architectures:

• Input Voltage Range: Supports standard industrial power infrastructure, including universal AC inputs from 100V to 240V AC at 50Hz or 60Hz, as well as 24V DC or 110V DC inputs for battery-backed backup systems.

• Output Voltage Rails: Delivers highly regulated multiple output channels, typically including 3.3V DC, 5V DC for logic circuits, and 24V DC for field device loops and I/O signaling.

• Output Voltage Tolerance: Maintained within an exceptionally tight tolerance, often less than 1 percent deviation, to ensure the accuracy of connected analog measurement circuits.

• Hold-Up Time: Features advanced capacitive storage providing a hold-up time of 20 milliseconds or more, allowing the system to ride through momentary power sags or switch over to backup power without resetting the CPU.

• Dielectric Strength: High insulation safety rating, typically withstanding AC 2000V or higher for one minute between the primary power input and secondary output circuits.

• Ripple and Noise: Designed with strict ripples-and-noise limitations, frequently kept under 50 millivolts peak-to-peak to prevent electrical noise from corrupting delicate sensor data.

Product Advantages

Yokogawa Power Boards are distinguished by their exceptional reliability, safety integration, and long operational lifespans:

• High Availability and Redundancy: Engineered to support dual-redundant configurations where two power boards run in parallel. If one unit fails, the other immediately assumes the full load without any disruption to the process control system.

• Medical and Industrial Grade Isolation: Features robust galvanic isolation that shields the internal system logic from external power line transients, lightning surges, and ground loops.

• Advanced Self-Diagnostics: Equipped with intelligent monitoring circuits that constantly check for under-voltage, over-voltage, over-current, and thermal overloads, sending real-time health status alarms to the operator console before a failure occurs.

• Long Service Life: Built exclusively with premium, high-temperature industrial components, such as long-life electrolytic capacitors, ensuring a service life that aligns with the decade-long operational cycles of process plants.

• Low Heat Generation: Utilizes highly efficient switching topologies that minimize power loss, reducing the heat footprint inside the control cabinet and extending the lifespan of neighboring modules.

Product Applications

These power boards act as the foundational energy source for critical infrastructure where downtime is not an option:

• Distributed Control Systems (DCS): Serving as the primary power supply for rack-mounted processors and node communication units in large-scale plants.

• Oil and Gas Refining: Powering control logic and safety instrumented systems (SIS) on offshore platforms, pipelines, and petrochemical refineries.

• Power Generation: Supplying continuous, reliable power to control loops managing boilers, turbines, and cooling systems in thermal and nuclear power utilities.

• Chemical and Pharmaceutical Production: Ensuring clean, uncorrupted power for precise batch execution and environmental monitoring equipment.

• Analytical Instrumentation: Integrating into Yokogawa’s high-end gas chromatographs, liquid analyzers, and flowmeters to maintain measurement stability.

Important Precautions

To preserve the safety of personnel and the integrity of the control system, the following operational instructions must be observed:

• High Voltage Storage: Even after disconnecting the main power source, internal high-voltage capacitors can hold a dangerous electrical charge. Wait at least five minutes for the capacitors to discharge fully before removing or servicing the board.

• Redundant Balancing: When installing power boards in a redundant configuration, ensure that both units are connected to separate, isolated power grids to maximize the benefits of system redundancy.

• Airflow and Ventilation: Do not obstruct the cooling vents of the module housing or the chassis where the power board is installed. Excessive heat accumulation inside the enclosure will accelerate component aging and trip thermal protections.

• Tightening Terminal Screws: Secure all power supply input wiring to the specified torque. Loose connections can create localized high resistance, leading to erratic power delivery, overheating, or localized fire hazards.

• Environmental Seals: Maintain the control cabinet's environmental sealing to protect the power board from conductive dust, moisture condensation, and corrosive chemical vapors, which can cause tracking faults or short circuits across the power traces.

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.