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The GE IS200EMCSG1AAB Exciter Multibridge Conduction Sensor Card is a specialized monitoring component used within the EX2100 Excitation Control System for large industrial gas, steam, or hydro turbines.1 This system is part of GE’s Mark VI Speedtronic control platform.2
🔬 Primary Function and Role
The main purpose of the IS200EMCSG1AAB board is to provide critical diagnostic feedback on the condition of the power electronics within the exciter bridge.3
- Conduction Monitoring: It contains four conduction sensors (labeled E1 through E4) that monitor the firing or conduction status of the Thyristor (SCR) bridges in the exciter power conversion module.4
- Irregularity Detection: The data it collects helps detect irregularities, such as improper firing sequences, failed Thyristors, or short circuits within the bridge that could lead to a fault or system shutdown.5
- System Diagnostics: The sensor data is sent back to the main Digital Signal Processor (DSPX) controllers in the EX2100 system. This feedback is essential for the control system to maintain stability, execute proper protection sequences, and provide detailed diagnostic information to operators.6
🛠️ Key Specifications
| Specification | Detail |
| Manufacturer | General Electric (GE) |
| Series | EX2100 Excitation Control System (Part of Mark VI/VIe) |
| Type | Exciter Multibridge Conduction Sensor Card (EMCS) |
| Sensors | Four conduction sensors (E1, E2, E3, E4) |
| Output Signal | Logic Signal (sent to the main controllers) |
| Revision | The “AAB” in the part number indicates a specific hardware/firmware revision. |
| Power Input | Receives power supply via two six-plug connectors. |
The card is a compact, plug-in printed circuit board (PCB) that is vital for ensuring the reliability and optimal performance of the high-power exciter bridge by constantly checking the health and function of its primary switching components.
