Description
The GE IS200TVBAH2ACC is a Vibration Termination Board (TVBA) designed for the Mark VI Speedtronic turbine control system. It serves as the dedicated interface for vibration, position, and speed sensors, providing essential monitoring and protection for rotating machinery.
Product Parameters (Datasheet)
- Model Number: IS200TVBAH2ACC
- Board Type: TVBA (Vibration Termination Board)
- System Series: Speedtronic Mark VI
- Input Channels: * 8x Vibration Inputs (Proximity probes or accelerometers)
- 2x Keyphasor/Position Inputs
- Compatibility: Works with VVIB (Vibration Processor) VME cards
- Redundancy: Supports Simplex and TMR (Triple Modular Redundant) configurations
- Connectors: 37-pin D-type connectors for signal routing to the VME rack
- Termination: High-density terminal blocks for direct field sensor wiring
- Revision: H2ACC (Enhanced revision with specific filtering for H2 series hardware)
GE IS200TVBAH2ACC
GE IS200TVBAH2ACC
GE IS200TVBAH2ACC
Country of Origin
This board was engineered and manufactured by General Electric (GE) in the USA, designed to meet the rigorous safety requirements of power plant and industrial turbine environments.
Application Fields
The IS200TVBAH2ACC is a critical safety component for high-speed rotating equipment:
- Gas & Steam Turbines: Continuous monitoring of shaft vibration and bearing health.
- Hydro Turbines: Tracking vibration profiles and mechanical alignment.
- Large Compressors: Protecting industrial compressors from catastrophic mechanical failure.
- Generators: Monitoring structural vibration and eccentricity.
- Predictive Maintenance: Providing raw data for vibration analysis and trend monitoring.
Product Usage Instructions
- Mounting: Install the TVBA onto the cabinet’s DIN rail. Ensure it is positioned within reach of the sensor lead-in cables and the processor ribbon cables.
- Sensor Wiring: Connect Bently Nevada or similar proximity probes and accelerometers to the terminal blocks. Ensure shielding is terminated at the designated points to minimize signal noise.
- Keyphasor Setup: Connect the Keyphasor (phase reference) sensors to provide the timing signal required for synchronous vibration analysis.
- Cabling: Use shielded 37-pin cables to connect the TVBA ports (JR, JS, JT) to the VVIB vibration processor card located in the VME rack.
- Grounding: Verify the board is properly grounded. Vibration signals are millivolt-level and highly sensitive to ground loops or electromagnetic interference.
Product Technical Description
Technically, the IS200TVBAH2ACC acts as a signal conditioner and surge protector. It includes passive filters to remove high-frequency noise from the raw transducer signals before they are digitized by the VVIB card. The “H2” revision is specifically optimized for high-performance vibration processing, supporting both seismic and displacement-type probes. It features integrated protection against lightning and switching transients, ensuring that a field-side electrical event does not damage the expensive VME processors.
Q&A (Common Questions)
Q: Can this board provide power to my proximity probes? A: Yes, the TVBA (in conjunction with the VVIB card) provides the negative voltage (typically -24V DC) required by most standard industrial proximity probes.
Q: What is the difference between H1 and H2 revisions? A: The H2 revision typically includes updated component specifications and improved filtering for lower-frequency vibration detection compared to the earlier H1 designs.
Q: Why is my vibration reading showing “Bad” or “High” when the machine is off? A: This is often a sign of a “Gap” error (the probe is too close or too far from the shaft) or a broken signal wire. Check the DC voltage at the terminal block to verify the probe’s health.
Q: Does this board support TMR voting? A: Yes. In a TMR system, the signal is fanned out from the TVBA to three separate VVIB cards (R, S, and T) to ensure the turbine can safely trip even if one processor fails.
Similar Model Recommendations
- GE IS200TVBAH1A (Standard revision)
- GE IS200VVIBH1C (Vibration Processor VME Card)
- GE IS200TBAIH1C (Analog Input Termination)
- GE IS200TRPAH1A (Turbine Protection Termination)
- GE IS200TBCIH1C (Contact Input Termination)
For pricing or technical support regarding the GE IS200TVBAH2ACC, please contact our turbine protection specialists.
