51304754-150 HONEYWELL

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A Honeywell Power Board is a circuit board assembly that manages and distributes electrical power within an enclosed system. Its primary functions are to convert incoming AC power to the necessary DC voltage, provide power-limited outputs for connected devices, and often include a battery charging circuit for backup power.

• Functionality: These boards act as a power hub for control systems, such as fire alarm control panels or access control systems. They ensure a stable voltage supply, protect downstream devices from faults, and often have monitoring capabilities for AC power loss or battery failure.

• Types:

• Power Supply/Charger Boards: These are the core units that convert AC to DC and provide a charging circuit for backup batteries.

• Power Distribution Boards: These boards take a single power input and split it into multiple, independently protected outputs to power various devices like sirens, locks, or sensors.

• Combined Systems: Many of Honeywell's products, especially in access control, are sold as unified systems where the power board, control boards, and battery space are all housed within a single, secure enclosure.

• Key Features:

• Supervision: Often includes supervision circuits for AC power failure and battery health, triggering a trouble signal when issues are detected.

• Protected Outputs: Outputs are typically power-limited and protected by fuses or PTCs (Positive Temperature Coefficient) to prevent damage from overcurrents.

• LED Indicators: Provide visual status of power presence, output status, and fault conditions for quick diagnostics.

• Configurability: Many boards include jumpers or dip switches to select output voltage (e.g., 12VDC or 24VDC) or other operational parameters.

• Fire Alarm Interface: Some boards have a dedicated input that can be triggered by a fire alarm panel to perform safety functions like unlocking doors (fail-safe mode).

Product Parameters

Product parameters are highly specific to the model and application but generally include:

• Input Voltage: The required input voltage, typically 120VAC or 230VAC.

• Output Voltage: The DC output voltage, commonly 12VDC or 24VDC.

• Output Current: The total continuous current the board can supply, often split across multiple outputs. For example, a board might provide 6A total, with 3A maximum per circuit.

• Number of Outputs: The number of power-limited output circuits available (e.g., 4, 8, or 16).

• Battery Support: The size and type of backup battery it can support (e.g., accommodating two 12V 12Ah batteries).

• Certifications: Compliance with safety standards such as UL (Underwriters Laboratories) or EN54 for fire safety applications.

• Physical Dimensions: The size of the board itself or the enclosure it comes in.

Product Advantages

• High Reliability: Engineered to meet stringent standards for security and life safety, ensuring dependable performance.

• Safety and Protection: Provides power-limited outputs and fault protection to safeguard both the control system and connected field devices.

• Integrated Solutions: Often part of a complete system, which simplifies installation and ensures seamless compatibility between components.

• Diagnostic Efficiency: Onboard LED indicators and diagnostic capabilities make it easy to troubleshoot issues and confirm operational status.

• Regulatory Compliance: Designed and certified to meet key industry standards, which is crucial for regulated applications like fire alarm systems.

Important Considerations

• Specific Application: You must select a power board that is specifically designed for your application (e.g., a board for a fire alarm system is different from one for access control) to ensure all features and safety requirements are met.

• Load Requirements: Ensure the board's output current and voltage ratings are sufficient for all connected devices.

• Battery Sizing: The backup battery must be correctly sized to provide power for the required standby and alarm duration, as specified by local codes and standards.

• Installation: Proper installation and wiring are critical. Follow the manufacturer's manual exactly to maintain certifications and ensure safe operation.

• Compatibility: Verify that the power board is compatible with the specific Honeywell control panels and peripherals you intend to use.

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