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The GE DS3800HCMC is a specialized circuit board known as a Dual Communication Control Card used in the GE Speedtronic Mark IV series of turbine and generator control systems. It is a legacy part, no longer in production, and is primarily found on the surplus and refurbished markets for the maintenance of older control systems.
Function and Purpose
The primary function of the DS3800HCMC is to manage communication between the Mark IV control system and other components. It is a key part of the system’s ability to communicate with the rest of the plant, including other controllers, human-machine interfaces (HMIs), and diagnostic equipment. Its key roles include:
- Communication Interface: It provides two communication channels, allowing the turbine control system to send and receive data simultaneously, which is vital for real-time control and monitoring.
- Signal Processing: The board processes communication signals, ensuring they are properly formatted and free of electrical noise.
- System Diagnostics: The board has built-in diagnostic tools, including indicator LEDs (one amber and two red), to monitor its own health and to provide a quick visual status of its processing activities.
- Modularity: As a modular component, it allows for flexible system configurations, enabling the Mark IV system to be customized for different applications.
Technical and Design Features
The DS3800HCMC is a robust, industrial-grade circuit board designed to operate in a demanding environment.
- Legacy Part: The “DS3800” prefix indicates that it belongs to the legacy Mark IV series. This system was the first microprocessor-based gas turbine control system from GE.
- Connectors: It has two 34-pin connectors and a modular connector that allow it to interface with other boards and system components in the control rack.
- Jumpers and Capacitors: The board is equipped with multiple capacitors and 14 jumpers that allow technicians to configure its operational settings to match the specific requirements of a given application.
- EPROM Modules: It has erasable programmable read-only memory (EPROM) modules embedded on it, which are used to store the board’s firmware and machine-readable code.
