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The GE DS215GHDQG5AZZ01A Circuit Board with Firmware is a highly complex and crucial component within General Electric’s industrial control systems, most famously the Speedtronic Mark V Turbine Control System.1
This board is part of the DS215 family, which signifies a specialized, firmware-loaded assembly designed for high-integrity control functions.2
⚙️ Key Specifications and Function
| Feature | Specification/Description |
| Product Type | Circuit Board with Firmware (DS215 Assembly) |
| Series/Family | GE Speedtronic Mark V Gas and Steam Turbine Control Systems |
| Functional Acronym (GHDQ) | Often referred to as a Contactor Driver Board or a high-level Interface and Control Board. It manages specialized logic and interfaces critical to the power section of the drive or turbine. |
| Specific Role | It is known to handle functions related to driving and monitoring contactors or other power control components. It processes current feedback to detect and report fast, critical faults like: * IOC (Internal Overcurrent) faults. * DI/DT (Rate of Change of Current) faults. |
| Architecture | It is a large, complex printed circuit board designed as a motherboard-style assembly that plugs into the VME rack of the Mark V system. It features multiple standoffs for mounting auxiliary boards. |
| Firmware Role | The suffix AZZ01A is essential, confirming that the board is pre-loaded with a specific, application-defining firmware/software package. In Mark V systems, the firmware and hardware are a single, field-replaceable unit. |
| Revision Level | The G5 specifies the Group 5 hardware revision, indicating it is one of the later revisions for this functional board type. |
| Components | Heavily populated with integrated circuits (ICs), FPGAs, EPROMs, resistors, capacitors, and test points, reflecting its role in complex, high-speed logic processing. |
In summary, the DS215GHDQG5AZZ01A is a fundamental piece of the Mark V system, dedicated to executing complex, safety-critical logic for controlling and protecting the high-power components of the drive or turbine.
