الوصف
The GE DS200TCDAH1BHD is a Digital I/O (Input/Output) Board designed for use in the GE Speedtronic Mark V Series Turbine Control Systems.1
Its primary role is to serve as the digital interface between the main control processors and the turbine’s field devices, facilitating the flow of digital (discrete) and some analog signals essential for system control, monitoring, and safety.2
⚙️ Core Function and Role
The board is a type of I/O control card with the functional acronym TCDA (indicating a board for reading and writing contact data).3
- Signal Conversion and Interfacing: The board processes and transmits digital contact input signals from associated terminal boards (like the DTBA and DTBB) and manages the digital contact output signals sent to other boards (like the TCRA boards) to operate relays and other discrete devices.
- System Integration: It ensures the Mark V system can accurately read the status of various sensors and switches (digital inputs) and send commands to actuators (digital outputs).4
- Intelligence: It contains a microprocessor and multiple Programmable Read-Only Memory (PROM) modules for local data processing and configuration storage, allowing it to be adapted to specific turbine application requirements.5
- Communication: Processed digital input signals are typically transmitted to the main control system over the internal network, known as the IONET.
🧩 Key Features and Hardware
The DS200TCDAH1BHD is a Printed Circuit Board (PCB) with several features designed for industrial control:6
| Component | Description |
| I/O Capability | Typically equipped with a mix of digital inputs, digital outputs, and a small number of analog inputs (e.g., a common configuration is 10 Digital Inputs, 10 Digital Outputs, and 2 Analog Inputs). |
| Connectors | Includes two 50-pin ribbon connectors (for connecting to I/O terminal boards like DTBA/DTBB) and two 3-pin connectors (JX1, JX2). |
| Configuration | Features 8 hardware jumpers (labeled JP1 through JP8) used to configure the board’s operational parameters, such as the IONET ID and other site-specific settings. |
| Status Indicators | Contains a block of 10 LEDs and a single LED visible from the side for troubleshooting and quick status checks. |
| Coating | The “H” and “D” suffixes often denote board revisions and special coatings. It generally includes a Conformal Coating for protection against moisture, dust, and industrial contaminants. |



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+86 15340683922