621-9938 HONEYWELL

HONEYWELL 621-9938 Power Board

Brand：HONEYWELL Model number：621-9938

Country of origin: United States Product weight：0.4kg

HS code：8517623990

Product Details：

Product Dimensions：

A Honeywell Power Supply Module is a robust, highly reliable electronic component designed to convert high-voltage AC or DC input power (typically plant power) into the precise, regulated low-voltage DC power (e.g., 5VDC, 12VDC, 24VDC) required for the backplane, processor, and I/O circuitry of a control system chassis.

Functionality: The primary function is power conditioning, regulation, and distribution. It protects the sensitive electronics from fluctuations, noise, and transients present in the raw input power source, ensuring stable operation of the entire system.
Architecture: Many Honeywell systems utilize redundant power supplies (two or more modules operating in parallel) to ensure high availability. These modules typically feature load-sharing and hot-swappability to allow for replacement without interrupting system operation.
Indicators: Built-in LED indicators display the module's status, including power input/output status, health status, and fuse status.

Product Parameters

Specific parameters depend on the system platform (e.g., C300, Safety Manager), but general specifications include:

Input Voltage: Range of acceptable input AC or DC voltage (e.g., 100-240 VAC, 24V DC, 48V DC).
Output Voltage: The regulated DC voltage supplied to the backplane (e.g., 5.1V DC, 24V DC).
Output Power/Current: Maximum continuous power (e.g., 75W, 150W) or current (e.g., 3A, 6A) the module can deliver.
Efficiency: The ratio of output power to input power, indicating energy loss (typically high efficiency, 90% or more).
Hold-Up Time: The duration the module can maintain output power after a momentary loss of input power (critical for transient immunity).
Redundancy Support: Whether the module supports single, dual (N+1), or triple (N+2) redundant configurations.
Operating Temperature: Wide industrial temperature range (e.g., -40°C to 70°C).
Certifications: Compliance with safety (UL, CSA, TUV) and regulatory standards (CE, FCC).

Product Advantages

High Reliability & Uptime: Redundancy and hot-swappability ensure that a single module failure does not compromise system operation, providing superior availability.
Robust Power Quality: Provides highly conditioned and regulated power, protecting sensitive control electronics from noisy plant power.
Diagnostics: Sophisticated built-in diagnostics allow the control system software to report the health and status of the power supply, enabling proactive maintenance.
Wide Input Range: Flexibility to operate from various plant power sources (AC or DC) globally.
Industrial Hardening: Designed to meet the stringent shock, vibration, and temperature requirements of industrial control rooms and field installations.

Important Considerations

Load Calculation: Ensure the total current demand of all connected controller and I/O modules does not exceed the maximum capacity of the power supply module(s), especially in redundant setups.
Redundancy Requirements: For critical applications, always install the maximum required number of power supply modules to maintain the designed fault tolerance (e.g., two for N+1 redundancy).
Grounding and Wiring: Strict adherence to Honeywell's specific grounding and power wiring guidelines is essential to maintain system integrity, noise immunity, and safety. Improper grounding can negate the benefits of the power conditioning.
Operating Environment: Although robust, placing the module in an environment that exceeds its specified temperature limits will significantly degrade its lifespan and reliability.
System Compatibility: Ensure the specific power supply module is correctly rated and compatible with the chassis and backplane of the Honeywell control system platform (e.g., it must match the Experion PKS version).

Product Applications

Honeywell Power Supply Modules are essential components in any system that requires reliable, continuous control:

Process Control Systems (DCS): Providing power to controllers and I/O in oil & gas refineries, petrochemical plants, power generation facilities, and pulp & paper mills.
Safety Instrumented Systems (SIS): Ensuring the highest level of reliable power for safety-critical logic solvers and I/O (e.g., in the Safety Manager platform).
Building Management Systems (BMS): Supplying stable power to central supervisory controllers and networked devices in large commercial and institutional buildings.
Pharmaceutical and Biotech: Providing uninterrupted power to validation-required control systems.
Mining and Metals: Powering control equipment operating in harsh, electrically noisy environments.

51304525-100 HONEYWELL

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