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The GE IS200BICLH1AEC is a highly specialized Printed Circuit Board (PCB) known as the IGBT Drive/Source Bridge Interface Board (). It is a critical component in General Electric’s Drive Control Series, which is typically integrated with the Mark VI Speedtronic Turbine Control System.
This board’s main function is to serve as the essential interface between the low-voltage digital control logic of the main processor (like the board) and the high-power switching components, specifically the IGBTs (Insulated Gate Bipolar Transistors), in large industrial motor drives or power converters.
⚙️ Core Functionality and Features
The board ensures the accurate, high-speed control and protection of the power stack components.
- Bridge Interface: It links the drive’s main control board to the Bridge Personality Interface Boards (, , or ) that directly manage the power semiconductors.
- IGBT Control Logic: The board contains an EPLD (Electronically Programmable Logic Device) that is configured by the central processing unit () on power-up. This logic implements specialized functions, including:
- Three-Phase IGBT Driver PWM/Deadband Control: For precise switching of the IGBTs.
- Bridge Phase Shunt and IGBT Desaturation Fault Latching: Crucial protective functions to prevent IGBT damage.
- Protection and Monitoring: It provides essential monitoring and reporting capabilities:
- Temperature Monitoring: Features four RTD (Resistance Temperature Detector) inputs for monitoring both bridge temperature and ambient temperature to manage thermal performance.
- Fault String Interface: Provides a dedicated interface for panel and system interlock fault strings ( and ) to ensure rapid, controlled shutdown if a safety interlock is broken.
- Auxiliary Control: It includes a PWM (Pulse Width Modulated) Fan Speed Output to control cooling fans dynamically based on measured temperatures.
🛠️ Technical Details
The IS200BICLH1AEC is a VME-style board designed to be installed in a specific slot within the control rack.
| Parameter | Detail |
| Functional Acronym | BICL (Bridge Interface Control Board) |
| System Family | GE Mark VI Speedtronic / Innovation Series Drive Control. |
| Mounting | VME Rack. Typically marked “Install in Slot 5 Only” on the faceplate. |
| Control Logic | Implemented via a -configured EPLD. |
| Identification | Features a 1024-bit serial memory with board ID and revision information. |
| Revision | H1AEC—The ‘H1A’ indicates a functional revision that is not backward compatible with earlier versions; the ‘EC’ indicates subsequent compatible artwork revisions. |
⚠️ Important Considerations for Replacement
- Slot Restriction: It is critical to install this board into the correct VME rack slot (Slot 5). Incorrect installation can lead to immediate damage to the board and the backplane.
- Revision Match is Crucial: The H1AEC suffix must be matched exactly when sourcing a replacement. Due to its role in high-speed, safety-critical drive control, an incompatible revision will lead to incorrect switching timing, failed protection logic, and potential catastrophic drive failure.
- High Voltage Risk: This board interfaces with the high-voltage side of the drive. Strict Lockout/Tagout (LOTO) and safety verification are mandatory before handling.
