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The GE IS200DSPXH1DBD Digital Signal Processor Control Board (DSPX) is a critical, high-performance printed circuit board that functions as the primary real-time controller in GE’s advanced industrial control systems.1
This board, identified by its revision code H1DBD, is a later iteration of the popular DSPX series and is designed for stability and high-speed processing.2
🧠 Core Functions and Applications
The DSPX board’s main role is to execute complex, time-critical control algorithms using its dedicated Digital Signal Processor (DSP).3 It is primarily used in:
- Generator Field Control: It is a key board in the GE EX2100 Excitation Control Series (including EX2100e), where it manages the generator field control applications necessary to regulate the output voltage and reactive power of synchronous generators.4
- Industrial Drives Control: It acts as the central controller for bridge, motor regulator, and gating functions within GE’s Innovation Series Drives.5 This ensures the precise timing of power semiconductor switches (like IGBTs) to regulate motor speed, torque, and position.
- System Logic and Interface: It provides the necessary logic, processing, and interface functions for the system, replacing slower analog controls with high-speed, digital processing.6
⚙️ Key Technical Features
The IS200DSPXH1DBD is engineered for robustness and high computational throughput:7
| Feature | Details |
| Processor | High-performance 60 MHz Digital Signal Processor (DSP) |
| Compatible Systems | GE Speedtronic Mark VI Turbine Control, EX2100 Excitation Control, Innovation Series Drives |
| Memory | Includes FLASH (for boot code and history), RAM (for execution), NVRAM (nonvolatile storage), and Add-Only Memory (for revision tracking). |
| I/O Inputs | Features specialized high-frequency inputs (HIFI inputs) for sensing signals from components like tachometers or encoders. |
| Interfaces | Includes two high-speed ISBus interfaces (5 Mb/s) for proprietary serial communication with other control boards. |
| Diagnostics | Two front-panel LED indicators (Status and Fault) for quick visual troubleshooting, along with a watchdog timer and stack overflow detection for system stability. |
The board is a single-slot, 3U high module that connects to the backplane via a 4-row, 128-pin DIN connector (P1) and is typically coated for protection against harsh industrial environments.8
