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Description

The Foxboro AD908AA is a high-reliability power supply module specifically engineered for the I/A Series Intelligent Automation system. This unit acts as a core power conversion component, providing stable and regulated DC output to essential Field Bus Modules (FBMs) and communication interfaces. Engineered for demanding industrial sectors, including petrochemical processing, power generation, and water treatment, the AD908AA is designed to mitigate the risks of system instability caused by electrical noise or voltage fluctuations. By maintaining consistent power delivery, the module helps ensure continuous process uptime and protects sensitive downstream electronics from transient electrical events.

Features

  • Designed for integration within standard Foxboro I/A Series rack assemblies.
  • Provides regulated 24 VDC output for critical I/O and communication hardware.
  • Includes internal surge suppression and EMI/RFI filtering circuitry.
  • Supports redundant power configurations to enhance system availability and fault tolerance.
  • Integrated front-panel LED indicators for real-time monitoring of power status and operational health.
  • Modular design facilitates efficient maintenance and rapid field replacement.

Technical Specifications

Model AD908AA
Brand Foxboro (Schneider Electric)
Input Voltage 120/240 VAC or 125 VDC
Output Voltage 24 VDC (Regulated)
Output Current 2.0 A (Continuous)
Operating Temperature 0 to 60 deg C
Storage Temperature -40 to 85 deg C
Relative Humidity 5 to 95% (Non-condensing)
Mounting Vertical or Horizontal Baseplate Mount
Cooling Natural Convection

Installation Guidelines

  • Ensure the system is fully powered down before installing or removing the module from the baseplate.
  • Follow standard ESD (Electrostatic Discharge) handling procedures when touching internal connectors or sensitive components.
  • Verify that the input voltage configuration matches the site power supply before energizing.
  • Ensure adequate clearance around the module to allow for sufficient natural convection cooling.
  • Confirm all terminal connections are secure and that grounding paths are properly established to maintain EMI protection.

FAQ

Is the AD908AA suitable for redundant power systems?

Yes, the AD908AA is designed to support redundant power configurations, allowing multiple modules to share the load and provide seamless failover protection in critical automation environments.

What is the primary function of this module in the I/A Series?

The module serves as a primary power conversion unit, transforming incoming AC or DC power into the stable, regulated 24 VDC required by I/A Series field bus modules and associated communication hardware.

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