The GE IS200TVBAH2B, also cataloged as the IS200TVBAH2 Signal Interface Board, operates as a dedicated hardware component for conditioning and processing vibration sensor signals within the Mark VIe turbine control system.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200TVBAH2B |
| Brand | GE |
| Origin | USA |
| Weight | 0.99 kg |
| Dimensions | 34.1 cm x 21.6 cm x 5.5 cm |
| Operating Temp | -40 deg C to 70 deg C |
| Power Consumption | -24 Vdc per channel (up to 12 mA) |
| Input Channels | 8 (Vibration), 4 (Position), 1 (Keyphasor) |
| Output Interfaces | BNC, DB9, DB25 connectors |
| Operating Voltage | 10 Vdc to 30 Vdc |
Mechanical Monitoring and Signal Integrity
The IS200TVBAH2B is specifically engineered for rotor dynamics and mechanical health monitoring. It supports precision eddy-current probe scaling, allowing the control system to translate gap voltage validation (-10 Vdc targets) into accurate displacement measurements. The board is designed for high-fidelity signal throughput, incorporating localized circuitry to manage cross-talk suppression between high-frequency vibration inputs and low-frequency position signals. This configuration ensures that critical turbine data, such as Keyphasor phase reference and shaft vibration vectors, are delivered to the processing core with minimal latency and high signal-to-noise ratios.
Frequently Asked Questions
Q: Can the buffer outputs be used for external monitoring without affecting the control signals?
A: Yes, the onboard BNC, DB9, and DB25 connectors provide buffered outputs that allow for external diagnostic equipment to monitor sensor data in parallel with the main turbine control system.
Q: What is the requirement for sensor input calibration?
A: Probes must be scaled to the -10 Vdc nominal gap target. Calibration should be verified through the system software to ensure that the input signals on circuits 1 through 13 match the physical probe characteristics.
Field Installation Guidelines
- Ensure the chassis is powered down and the backplane is isolated before installing the board.
- Align the board within the vibration monitoring rack, ensuring the rear connectors engage the backplane pins without binding.
- Terminate signal cables to the board terminals, ensuring that shield grounds are connected to the chassis common to prevent ground loops that could skew vibration data.
- Verify the Keyphasor reference signal on circuit 13 using an oscilloscope to ensure the pulse frequency aligns with the shaft rotation speed.
- Perform a sensor gap check to ensure all connected proximitors are within the linear operating range before initiating system startup.
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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