34C421 RELIANCE

Reliance 34C421 Circuit Board

Brand：RELIANCE Model number：34C421

Country of origin: United States Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

Reliance circuit boards typically served as the electronic brains or control interfaces within their industrial products, such as motor drives, programmable logic controllers (PLCs), and power supplies. They are primarily designed for robust performance in industrial environments.

Types: Reliance manufactured various types of circuit boards depending on their application:

Control Boards: These boards contain the core logic for controlling motors, processes, or other industrial equipment. They might feature microprocessors, memory, and specialized control circuitry.
Power Supply Boards: Dedicated to converting and regulating electrical power for the operation of other system components.
I/O Boards: Similar to the Eaton I/O modules discussed previously, these boards handle the input and output signals from sensors and to actuators.
Communication Boards: Facilitating data exchange between different parts of a system or with external networks.
Specialized Function Boards: Boards designed for specific tasks like DV/DT filtering (for motor drives), isolated process control, or specific interface functions.

Construction:

Typically rigid PCBs, often multi-layered, to accommodate complex circuitry and provide robustness.
Utilized various substrate materials like FR-4, known for its good balance of electrical and mechanical properties.
Designed for through-hole components (older boards) and surface-mount technology (SMT) for more modern designs.

Product Parameters (General)

Specific parameters vary widely depending on the function and generation of the board. However, common parameters include:

Voltage and Current Ratings: Specific to the power handling capabilities and signal levels of the board.
Component Density: Number and type of electronic components (integrated circuits, resistors, capacitors, etc.).
Layer Count: Boards could range from single-layer to multi-layer (e.g., up to 14 or more layers) for increased complexity and signal integrity.
Connectivity: Various types of connectors for power, signals, and communication.
Environmental Ratings: Designed to operate within specified temperature, humidity, and vibration ranges typical of industrial settings.
Compliance: Designed to meet relevant industrial standards and regulations of their time.

Product Advantages

Robustness and Durability: Reliance circuit boards were built for industrial applications, known for their ability to withstand harsh operating conditions, including temperature fluctuations, vibration, and electrical noise.
Long Lifespan: Many Reliance systems are still in operation today, a testament to the longevity of their components, including the circuit boards.
Integration with Reliance Systems: Designed for seamless integration within Reliance Electric's proprietary control systems and drives, ensuring optimal performance.
Proven Technology: Representing established and well-tested industrial control technology.

Important Considerations

Obsolescence: As Reliance Electric was acquired, many of these boards are now considered legacy or obsolete. Finding new replacements can be challenging.
Availability of Spares: Sourcing genuine replacement boards often relies on industrial surplus markets, specialized repair companies, or discontinued parts suppliers.
Repair vs. Replace: For older boards, repair might be a viable option, but it requires specialized knowledge and components. Determining whether to repair or replace a legacy system is a critical decision.
Documentation: Comprehensive technical documentation (schematics, wiring diagrams, manuals) can be difficult to obtain for very old boards, which can hinder troubleshooting or integration.
Compatibility: Ensure any replacement or repaired board is fully compatible with the existing system's firmware and hardware.
Technological Advancement: While robust, older Reliance boards may lack the advanced features, connectivity options, and processing power of modern circuit board designs.

45C-360 RELIANCE

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