HONEYWELL PSU-240516

Description

Product Description

HONEYWELL PSU-240516 is a dedicated Power Supply Unit designed for Honeywell control panels, alarm systems, or fire detection control units. This component is not a programmable logic controller but is an essential supporting device that provides clean, regulated, and reliable DC power to sensitive electronic control modules, sensors, and relays within a cabinet. The primary function of the HONEYWELL PSU-240516 is to convert standard AC mains voltage (typically 120/240VAC) into the stable, low-voltage DC power (as indicated by “24” and “VDC/16” likely meaning 24VDC at 16 Amps) required by the system’s logic and field devices. The reliability of the entire control panel hinges on this single component; a failure of the PSU-240516 will cause a complete system shutdown. For system designers and maintenance personnel, selecting the correct, robust power supply like the HONEYWELL PSU-240516 is a foundational step in ensuring system integrity and uptime.

Product Parameters / Technical Specifications

• Manufacturer: Honeywell (likely from the Building Technologies or Fire & Security division)
• Product Type: System Power Supply Unit (PSU)
• Input Voltage: Typically accepts a range of AC input voltages (e.g., 120/240VAC, 50/60Hz) to accommodate different regional power standards.
• Output Voltage: Provides a stable 24 VDC output, as indicated by the “2405” in the model number.
• Output Current: The “16” suggests a significant current capacity, likely 16 Amps continuous output at 24VDC. This provides substantial power (approx. 384 Watts) for multiple devices.
• Regulation & Ripple: Features tight voltage regulation and low output ripple/noise to prevent malfunctions in sensitive electronics.
• Protections: Includes standard safety protections such as Over-Current Protection (OCP), Over-Voltage Protection (OVP), Short-Circuit Protection (SCP), and thermal overload protection.
• Status Indicators: LED indicators for power on (AC input), DC output OK, and fault conditions.
• Mounting: Designed for DIN-rail mounting or panel mounting within a control enclosure.
• Certifications: Likely carries safety certifications like UL (UL 508 for industrial control equipment), CE, and may be rated for use in fire alarm systems (UL 864).

Advantages and Key Features

• High Current Capacity: The HONEYWELL PSU-240516‘s 16A rating allows it to power large control panels with numerous I/O modules, controllers, and field devices without needing multiple smaller power supplies.
• Robust and Reliable Design: Engineered for 24/7 continuous operation in industrial and life-safety environments, offering high mean time between failures (MTBF).
• Clean, Regulated Power: Provides stable DC power critical for the reliable operation of microprocessors, communication circuits, and analog sensors, preventing noise-induced errors.
• Comprehensive Electrical Protection: Built-in protections safeguard both the power supply itself and the downstream expensive control equipment from damage due to wiring faults or power anomalies.
• Clear Diagnostic Indicators: Simple LED status lights allow for immediate visual health assessment, facilitating quick troubleshooting.
• Designed for System Integration: As a Honeywell-branded PSU, it is often the specified or compatible unit for Honeywell control panels, ensuring fit and performance.

Application Cases in Industry

• Fire Alarm Control Panel (FACP) Power: A primary application is as the main or auxiliary power supply for Honeywell (Notifier, Gamewell-FCI) fire alarm control panels, powering the CPU, network cards, and notification appliance circuits (NACs).
• Building Management System (BMS) Panels: Provides power to Honeywell Excel, WEBs, or other BMS controllers, I/O modules, and actuator relays that manage HVAC, lighting, and access control.
• Industrial Control Cabinets: Used in custom panels for process control or machine automation where a high-capacity, reliable 24VDC source is required for PLCs, remote I/O, sensors, and solenoid valves.
• Security and Access Control Systems: Powers central security panels, card readers, and electric lock hardware.

Comparison with Competing Products

Selection Suggestions and Precautions

1. Verify System Compatibility and Listing: Crucially Important. For fire alarm or other life-safety systems, the HONEYWELL PSU-240516 must be explicitly listed for use with your specific control panel model. Using a non-listed power supply can void the system’s certification and insurance.
2. Accurate Load Calculation: Before installation, calculate the total current draw of all devices to be powered. Ensure the total is less than 80% of the PSU’s 16A rated capacity (i.e., ~12.8A) for a safety margin and to account for inrush currents.
3. Input Voltage Configuration: Verify the unit is configured for your local AC mains voltage (e.g., 120V vs. 240V) before applying power. Some units have a selector switch; incorrect setting will cause failure.
4. Proper Wiring and Fusing: Follow all local electrical codes. Use appropriately sized wire for both AC input and DC output. Install the recommended input fusing or circuit breaker. Ensure the DC output common is properly grounded as per the system design.
5. Consider Redundancy: For critical systems, consider implementing a redundant (parallel) power supply configuration. Verify if the PSU-240516 supports current sharing or requires external diodes for redundancy.
6. Sourcing from Authorized System Distributors: For life-safety and critical building systems, purchase the HONEYWELL PSU-240516 from authorized Honeywell Fire or Building Solutions distributors. This ensures you receive a genuine, certified component and proper technical documentation.

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