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The GE IS200DSPXH2B Digital Signal Processor Control Board (DSPX) is a critical, high-performance printed circuit board used as the primary real-time controller in GE’s industrial automation platforms.
This board, identified by the revision code H2B, is part of the IS200 Mark VI Series and is designed for stability and high-speed processing in demanding applications.
🧠 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), making it vital for precise system regulation.
- Industrial Drives Control: It is the central controller for the bridge, motor regulator, and gating functions within GE’s Innovation Series Drives.1 It controls the precise timing of power semiconductor switches (IGBTs) to regulate motor speed, torque, and position.
- Generator Field Control: It also manages the generator field control applications when used in the GE EX2100 Excitation Control Series.2 This function regulates the output voltage and reactive power of synchronous generators.
- Logic and Interface: It handles all necessary logic, processing, and interface functions for the system, replacing slower analog controls with high-speed, digital processing.3
⚙️ Key Technical Features
The IS200DSPXH2B is part of a series engineered for robust industrial performance.
| 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 application firmware), RAM (for execution), and NVRAM (nonvolatile data storage). |
| I/O Inputs | Features five differential HIFI (High-Frequency Input) pairs for high-speed signals like tachometer feedback. |
| Interfaces | Includes two high-speed ISBus interfaces (5 Mb/s) for proprietary serial communication. |
| Diagnostics | Two front-panel LED indicators (Status and Fault) for quick visual troubleshooting. |
🚨 Note on EX2100 Compatibility
It’s important to note that while the DSPX series is generally used in EX2100 systems, certain revisions, including the IS200DSPXH2B, are sometimes noted as not fully supported by EX2100 applications due to limitations in their ISBus interface compared to later revisions. Always verify the required board revision against the specific GE manual for your application (e.g., GEI-100267B).
