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The GE IS200DSPXH2DBD Digital Signal Processor Control Board (DSPX) is a critical, high-performance printed circuit board that serves as the primary real-time controller in GE’s advanced industrial control systems.
It is a key component within the GE Speedtronic Mark VI Turbine Control System and is also used in the Innovation Series Drives and the EX2100 Excitation Control Series. The suffix H2DBD denotes its specific hardware and firmware revision.
🧠 Core Functions and Applications
The DSPX board is the computational core, utilizing a high-performance Digital Signal Processor (DSP) to execute complex, time-critical control algorithms, which are vital for system stability and precision.
- Industrial Drives Control: It is the central controller for bridge, motor regulator, and gating functions within the Innovation Series Drives. It ensures the precise and high-speed timing of power semiconductor switches (IGBTs) to regulate motor speed, torque, and position.
- Generator Field Control: It is a single-slot, 3U high module in the EX2100 Excitation Control Series rack that manages the generator field control applications. Its functions include:
- Field Voltage and Current Regulation (FVR/FCR)
- SCR gating signal control
- Field flashing and start-stop functions
- Alarm and trip logic processing
- Logic and Processing: The board provides all necessary logic, processing, and interface functions for the system, often sharing control responsibility with the ACLA board.
⚙️ Key Technical Features
The IS200DSPXH2DBD is engineered for robust industrial performance and features:
| Feature | Details |
| Processor | High-performance 60 MHz Digital Signal Processor (DSP) |
| Custom Logic | Integrated Application-Specific Integrated Circuit (ASIC) for custom logic and support functions. |
| I/O Inputs | Includes five differential HIFI (High-Frequency Input) pairs for high-speed feedback signals (e.g., tachometer/encoder). |
| Interfaces | Features two high-speed ISBus interfaces (5 Mb/s) for proprietary serial communication with other control boards. |
| Memory | Uses FLASH, RAM, and NVRAM for code, execution, and nonvolatile data storage. |
| Diagnostics | Two front-panel LED indicators (Status and Fault) and a watchdog timer for system integrity. |
The board’s functional revisions are generally backwards-compatible, meaning it can often be used to replace older revisions within the same major product series, though checking the specific application manual (e.g., GEI-100267B) is always recommended.
