Description
Product Introduction (Anti-Template)
The DS200UDSAG1 is a data server controller board for the Mark VI turbine control system—the board that manages data acquisition, logging, and historian services for turbine operations. This board collects data from I/O boards, stores historical data, and provides data access to external systems for analysis and reporting.
The ‘UDSA’ in the part number indicates this is a data server controller board. The base model has standard isolation, standard temperature range, and basic data server functionality. The board is designed for applications where you need dedicated data server functionality for turbine operations.
Key Technical Specifications
| Parameter | Value / Range |
|---|---|
| Manufacturer | General Electric (GE) |
| Part Number | DS200UDSAG1 |
| Board Type | Data Server Controller Board |
| Processor | VME-based data server processor |
| Data Acquisition Cycle | 5ms (minimum) |
| Communication Interfaces | Ethernet, VME backplane |
| Storage | Standard capacity |
| Diagnostic LEDs | Status LEDs (power, run, fault, communication, storage) |
| Isolation | Standard (1500Vrms) |
| Input Power | 24 or 48 VDC (via backplane) |
| Mounting | VME rack (fits standard Mark VI backplane) |
| Operating Temp | 0°C to +55°C |
| Firmware | Version 2.0 or later recommended |
| Connectors | 1 x 96-pin DIN backplane connector; front panel communication ports |
Compatible Replacement Models
Replacement options depend on your data server requirements and system compatibility.
✅ Drop-in Replacement: The DS200UDSAG1A (if available) would be the ‘A’ revision. Always verify the specific suffix before ordering.
⚠️ Software Compatible: The DS200UDSAG2 (if available) would be a higher-performance variant. Check compatibility with your system.
⚠️ Software Compatible: The DS200UCIAG1A (CPU controller) is the main CPU, not a data server—only use if you need CPU functionality.
❌ Hardware Incompatible: Any I/O board (TCCAG1, TCDAG1, TCQAF1, etc.) uses different backplane pins and is not suitable as a data server replacement.
Frequently Asked Questions (FAQ)
What is the DS200UDSAG1 used for?
The DS200UDSAG1 is a data server controller that manages data acquisition, logging, and historian services for the Mark VI turbine control system. It collects data from I/O boards, stores historical data, and provides data access to external systems.
Can I use this board with a Mark VIe controller?
No—the UDSAG1 uses the older Mark VI backplane pinout and architecture. Mark VIe uses a different system architecture. If you’re migrating to Mark VIe, you’ll need the Mark VIe-specific data server boards.
How do I test this board before installation?
Testing the UDSAG1 requires verifying the data server functionality:
- Visual inspection: Check for burnt or discolored components. Look for diagnostic LEDs.
- Power-up test: Apply power. The board’s status LEDs should illuminate in the correct sequence.
- Firmware check: Read the firmware version via the system interface—should be 2.0 or later.
- Communication test: Verify communication via Ethernet ports.
- Data acquisition test: Verify data acquisition at 5ms intervals.
- Storage test: Verify data storage and retrieval functionality.
What’s the most common failure on this board?
Two issues specific to the data server design:
- Storage failure. The storage media can fail over time—symptom: data logging errors or inability to retrieve historical data.
- Communication interface failure. The Ethernet ports can fail—symptom: loss of communication with external systems.
If I’m using this board in a SIL-rated safety application, what’s the recommended maintenance interval?
The data server board is suitable for SIL-2 applications (when used with appropriate redundancy). We recommend:
- Visual inspection: Every 6 months (check diagnostic LEDs)
- Power-up test: Every 12 months
- Communication test: Every 12 months
- Storage test: Every 12 months
- Full system test: Every 5 years
What’s the lead time for a replacement UDSAG1?
These boards are moderately available:
- New surplus: 2-4 weeks.
- Refurbished: 1-2 weeks. Ensure the refurbisher has verified the data server functionality.
- Used/as-is: Available, but the storage media is a wear item—test thoroughly before installation.
Is there a direct Mark VIe equivalent?
Yes—the IS200UDSAG1 (Mark VIe version). The architecture is different.
What’s the data acquisition cycle for this board?
The UDSAG1 can acquire data at 5ms intervals—200Hz update rate.
What communication interfaces does this board have?
The UDSAG1 has Ethernet for network communication and the VME backplane for communication with I/O boards and the main CPU.
Can I use this board in a redundant configuration?
Yes—the UDSAG1 can be used in a redundant configuration with two data server boards (primary and secondary). This provides failover capability for critical data acquisition applications.
What’s the storage capacity of this board?
The UDSAG1 has standard storage capacity suitable for most turbine data logging requirements. For specific storage capacity, consult the GE specifications.
What’s the difference between the UDSAG1 and the UCIAG1A?
The UCIAG1A is the main CPU controller that executes the turbine control algorithms. The UDSAG1 is a data server controller that manages data acquisition and logging. The UDSAG1 offloads data management from the main CPU.

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