2AO-V3I-FGB Foxboro

2AO-V3I-FGB Foxboro Power Board

Product  Description：

Foxboro Power Boards, primarily integrated within the EcoStruxure Foxboro DCS (Distributed Control System) and legacy I/A Series architectures, are high-reliability power distribution and regulation modules. These boards are engineered to accept raw primary power and convert it into highly stable, isolated DC voltage rails necessary to run sensitive control processors, fieldbus communication modules, and I/O sub-systems. Positioned as a critical defense layer against grid fluctuations, they ensure the continuous, uninterrupted operation of industrial plant automation.

Product Parameters

The technical composition of a Foxboro Power Board is tailored for mission-critical industrial standards:

• Input Voltage Versatility: Supports wide-range inputs including standard 24V DC battery backup systems, 100V-120V AC, and 200V-240V AC grid power.

• Output Voltage Efficiency: Delivers regulated, low-ripple DC outputs, typically fixed at 24V DC, 5V DC, or 12V DC, to power internal system buses.

• Total Power Rating: Engineered across a spectrum of capacities, commonly ranging from 100W up to 600W per board depending on the rack size and configuration.

• Di-electric Isolation: Features heavy-duty isolation ratings, typically 1500V AC or higher, between the input power source, output rails, and chassis ground.

• Hold-Up Time: High-capacity internal capacitors provide a hold-up time of at least 20 milliseconds, allowing the system to bridge minor power dropouts without resetting the CPU.

• Efficiency Rating: Advanced synchronous rectification topologies allow the board to operate at thermal efficiencies between 88 percent and 93 percent.

Product Advantages

Foxboro Power Boards are a staple in heavy process industries due to their resilient design features:

• True Fault Tolerance and Redundancy: Designed for N+1 or 1:1 redundancy configurations, allowing paired boards to share the load equally and handle seamless, bump-free transfer if one unit fails.

• Advanced Diagnostics and Monitoring: Features integrated status lines that communicate directly with the Foxboro system software, reporting real-time metrics on output voltage, load current, and internal temperature.

• Extreme Thermal and Environmental Resilience: Built with heavy copper planes and industrial-grade components that operate reliably in ambient temperatures from -20°C to 70°C without requiring forced-air cooling fans.

• Live-Invention Maintenance: Supports full hot-swapping functionality, meaning a faulty power board can be extracted and replaced while the control system remains completely online and controlling the plant.

• Superior Over-Voltage and Surge Suppression: Onboard Metal Oxide Varistors (MOVs) and transient voltage suppressors shield the downstream logic circuits from catastrophic grid surges and lightning strikes.

Product Applications

These power boards provide the foundational energy backbone for high-availability process control:

• Chemical and Petrochemical Refining: Powering the distributed control nodes that monitor critical pressure, temperature, and distillation loops 24/7.

• Power Generation Plants: Delivering stable energy to the safety-instrumented systems and turbine control logic in nuclear, gas, and coal-fired facilities.

• Oil and Gas Upstream Processing: Operating within remote terminal units (RTUs) on offshore platforms and cross-country pipelines where power quality can be highly variable.

• Minerals and Mining Automation: Running the automated crushing, grinding, and material transport control systems in dusty, high-vibration processing plants.

• Pulp and Paper Mills: Supplying continuous power to the multi-stage wet and dry end processing controllers where electrical noise from large motors is prevalent.

Important Precautions

To preserve system safety and achieve the maximum operational lifespan of the hardware, adhere to these guidelines:

• High Energy Discharge Hazard: Large electrolytic capacitors on the board retain significant electrical energy after power is removed. Wait a minimum of 5 minutes before handling or servicing the board after disconnecting the supply.

• Grounding Loop Prevention: Ensure the board's frame is bonded to a clean, low-impedance instrument ground system rather than a noisy electrical ground to prevent noise injection into the I/O system.

• Airflow and Clearance Maintenance: While the boards are convection-cooled, they must be mounted in the vertical orientation specified by Foxboro. Do not obstruct the ventilation channels at the top and bottom of the module housing.

• Load Balance Verification: In redundant configurations, ensure that both power boards are fed from independent, distinct power sources (such as Source A and Source B) to maximize the utility of the redundant design.

• Conformal Coating Integrity: When operating in environments with high humidity or corrosive gases (such as hydrogen sulfide), ensure the board variant chosen features G3 harsh-environment conformal coating, and avoid scratching this layer during installation.

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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