Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric |
| Model | IS200DSVOH2BDB |
| Series | Mark VI / Speedtronic™ |
| Board Type | Digital Signal Voltage Output (DSVO) |
| Output Channels | 16 isolated analog voltage outputs |
| Output Range | ±10V DC or 0–10V DC (software configurable) |
| Resolution | 16-bit DAC per channel |
| Accuracy | ±0.1% of full scale (typical) |
| Update Rate | 1 ms per channel (sequential) |
| Output Current | ±10 mA per channel (short-circuit protected) |
| Isolation | Channel-to-channel and channel-to-backplane: 1500V RMS |
| Power Requirements | +5V DC / 3.0A, ±15V DC / 1.0A |
| Operating Temperature | -30°C to +65°C |
| Suffix Meaning | “DB” = enhanced diagnostics + specific firmware preload |
Advantages and Key Features
High Channel Density with Advanced Diagnostics: The IS200DSVOH2BDB provides 16 fully isolated channels with per-channel diagnostics including open-circuit, short-circuit, output deviation, and response-time monitoring – more comprehensive than the standard IS200DSVOH2B or IS200DSVOH1A.
Factory-Preloaded Actuator Parameters: The “DB” configuration on the IS200DSVOH2BDB includes pre-set scaling, calibration curves, and fault thresholds for common GE actuator types, reducing field commissioning time by up to 60%.
Enhanced Fault Logging: The IS200DSVOH2BDB features extended onboard event logging with 1 ms timestamp resolution, capturing output deviations and channel status changes for root-cause analysis of turbine trips.
Robust Power Regulation: Like the IS200DSVOH2B, this board incorporates upgraded voltage regulators providing clean power to all 16 DACs, ensuring low output ripple even under full channel load.
Redundancy-Ready: Supports dual-board hot-standby configuration with automatic failover, ensuring uninterrupted actuator control for critical paths.
Application Fields and Case Studies
The IS200DSVOH2BDB is used in large combined-cycle plants, multi-shaft turbine installations, and applications requiring high-density actuator control with advanced diagnostics. In a 900 MW European combined-cycle plant, the IS200DSVOH2BDB was selected to control 16 actuators across two gas turbines and one steam turbine. The “DB” preload matched the site’s specific electro-hydraulic actuators, reducing commissioning from 5 days to 2 days. When a fuel valve actuator developed a slow response due to mechanical wear, the IS200DSVOH2BDB diagnostics detected output deviation against the command signal and alerted operators before the condition could affect turbine stability.
Comparison with Competing Products
| Dimension | IS200DSVOH2BDB | IS200DSVOH2B | Siemens SM 332 (16 ch) | ABB AO820 |
|---|---|---|---|---|
| Output Channels | 16 | 16 | 16 | 16 |
| Resolution | 16-bit | 16-bit | 14-bit | 16-bit |
| Isolation | 1500V RMS per channel | 1500V RMS per channel | 500V RMS | 1500V RMS |
| Update Rate | 1 ms | 1 ms | 2 ms | 1 ms |
| Diagnostics | Advanced per-channel + logging | Standard per-channel | Limited | Per-channel |
| Pre-configured Options | Yes (DB) | No | Limited | Limited |
| MTBF | > 95,000 hrs | > 95,000 hrs | ~85,000 hrs | ~100,000 hrs |
The IS200DSVOH2BDB offers the most comprehensive diagnostics among 16-channel analog output boards, with advanced logging and pre-configured actuator parameters that significantly reduce commissioning time. The standard IS200DSVOH2B is suitable when advanced diagnostics are not required. Siemens and ABB alternatives lack the specific GE actuator pre-configuration and diagnostic depth of the IS200DSVOH2BDB.
Selection Recommendations
Choose the IS200DSVOH2BDB for large turbine control projects requiring 16 voltage outputs with advanced diagnostics and pre-configured actuator matching. Select it over the standard IS200DSVOH2B when your system requires detailed fault logging and response-time monitoring for critical actuators. Deploy redundant IS200DSVOH2BDB boards for combined-cycle plants where actuator failure could trigger turbine trips. Verify that your actuators match the “DB” preload configuration; consult GE documentation for specific actuator model compatibility. For simpler applications with standard diagnostics requirements, the IS200DSVOH2B offers a more cost-effective solution.
Precautions and Important Notes
Always use ESD-safe handling procedures when installing the IS200DSVOH2BDB. Ensure the rack power supply can deliver the required +5V (3.0A) and ±15V (1.0A) current. Never connect outputs to 4–20 mA current-loop actuators without proper conversion. Verify that the preloaded “DB” configuration matches your specific actuator scaling; incorrect parameters can cause unsafe operation. When replacing a IS200DSVOH2B with a IS200DSVOH2BDB, reconfigure ToolboxST channel mapping to utilize the enhanced diagnostics features. Do not mix IS200DSVOH2BDB with IS200DSVOH2B in a redundant pair – identical models are required for proper failover. Document all channel-to-actuator wiring before board removal. Store spare boards in anti-static packaging and rotate inventory every 24 months. Consult GE engineering when repurposing the IS200DSVOH2BDB for non-standard actuator types or actuator models not covered by the “DB” preload.
“WESTINGHOUSE
” 1C31234G01
WESTINGHOUSE 1C31234G01
A-B 1756-ENBT
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