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The GE IS200DSPXH1C 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 specific revision (H1C) is notable for its compatibility with modern GE platforms and its updated communication interface.
🧠 Core Functions and Applications
The DSPX board utilizes a powerful Digital Signal Processor (DSP) to execute complex, time-critical control algorithms, making it vital for precise regulation in major industrial machinery:2
- Generator Field Control: It manages the generator field control functions when integrated into the GE EX2100 Excitation Control Series.3 This regulates the output voltage and reactive power of large synchronous generators.
- Industrial Drives Control: It is the core controller for bridge, motor regulator, and gating functions within GE’s Innovation Series Drives.4 This involves accurately timing and controlling power semiconductor switches (IGBTs) to regulate motor speed, torque, and position.
- Central Processing: The board provides all essential logic, processing, and interface functions for the system, replacing slower analog controls with high-speed digital processing.5
⚙️ Technical Features of the IS200DSPXH1C
The H1C variant represents a later revision in the DSPX line, featuring specific hardware and firmware updates:6
| Feature | Details |
| Compatible Systems | GE Speedtronic Mark VI Turbine Control, EX2100 Excitation Control, Innovation Series Drives |
| Processor | High-performance Digital Signal Processor (DSP), typically 60 MHz. |
| Functional Revision | Revision C; this revision is typically required for proper function within the EX2100 Excitation Control systems. |
| Bus Revision | Features ISBus revision 2, a proprietary GE high-speed serial interface. |
| I/O Inputs | Includes five differential HIFI (High-Frequency Input) pairs used for sensing tachometers, encoders, or other high-speed signals. |
| Outputs | Up to 20 Pulse Width Modulation (PWM) outputs (e.g., 24 kHz) for controlling power bridge gating. |
| Diagnostics | Two front-panel LED indicators (Status and Fault) and a watchdog timer for system integrity. |
The use of the Digital Signal Processor allows the system to achieve the fast sampling and high computational throughput necessary to maintain stable control over high-power electrical components.
