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The GE DS200UPLAG1BDC LAN Power Supply Card is a vital component used in the General Electric Mark V Speedtronic Turbine Control System.1
Its primary role is to ensure the integrity of the internal communication network within the control panel.2
⚙️ Function and Part Number Specifics
The functional acronym for this board is UPLA (LAN Power Supply Circuit).3
| Segment | Meaning | Detail |
| DS200 | Series Tag | Part of the $\text{GE Mark V}$ Turbine Control Systems/Drive Systems product line. |
| UPLA | Functional Acronym | LAN Power Supply Circuit (Core Function). |
| G1 | Grouping Tag | Design Group 1. |
| B | Functional Revision 1 | The second major design iteration. |
| D | Functional Revision 2 | A subsequent minor functional or engineering change. |
| C | Artwork Revision | The third artwork/physical layout revision. |
Key Functions
- LAN Power Regulation: It supplies clean, regulated $\text{DC}$ power to the network components (such as $\text{ARCNET}$ communication hubs and drivers) used by the main processors ($\text{R}$, $\text{S}$, $\text{T}$) to exchange data and execute the $\text{TMR}$ (Triple Modular Redundant) voting logic.
- System Integrity: By providing a stable power source for the 4$\text{LAN}$, it is crucial for maintaining the system’s fault-tolerant capability, preventing communication errors that could lead to turbine trips or incorrect control actions.5
- Configuration: Like other 6$\text{UPLA}$ boards, it contains adjustable settings like jumpers and 7$\text{DIP}$ switches that configure the board’s behavior for its specific application within the turbine control system.8
⚠️ Important Note on Replacement
As with all 9$\text{Mark V}$ circuit boards, if you are replacing a faulty DS200UPLAG1BDC board, it is a critical maintenance step to transfer the settings (the positions of all jumpers and 10$\text{DIP}$ switches) from the old card to the new card.11 These physical settings determine the board’s functionality and compatibility within the overall control system.
