SPECIFICATIONS
Part No.: IS200VVIBH1BBA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
MPU pulse rate range: 2 Hz to 20 kHz
MPU pulse rate accuracy: 0.0 percent of reading
MPU input circuit sensitivity: 27 mV pk
Flame detectors: 8 per VTUR
Temperature rating: 0 to 60 oC
Product Type: Vibration Monitor Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200VVIBH1BBA is a Vibration Monitor Board developed by GE. It is a part of Mark VI control system. The Mark VI system incorporates Bently Nevada probes, renowned for their accuracy and reliability, to monitor shaft vibrations - a critical aspect of turbine health and performance. The Vibration Monitor Board (VVIB) serves as the interface between these probes and the system's processing units.
Features
- Bently Nevada Probes for Shaft Vibration Monitoring: The choice of Bently Nevada probes underscores the commitment to precision and quality in monitoring turbine vibrations. Bently Nevada's reputation for excellence in condition monitoring makes their probes the preferred choice for detecting and analyzing shaft vibrations, crucial indicators of turbine health and operational integrity.
- Role of Vibration Monitor Board: Processing the signals received from the Bently Nevada probes, ensuring accurate interpretation and analysis of vibration data. Positioned as an intermediary between the probes and the system's control units, the VVIB acts as a central hub for managing vibration-related information.
- Integration with TVIB Terminal Board: The vibration signals captured by the Bently Nevada probes are routed to the TVIB (Turbine Vibration Interface Board) terminal board. This board serves as the primary connection point for up to 14 probes, facilitating direct input and transmission of vibration data to the VVIB.
- Signal Processing and Transmission: Upon receiving the vibration signals from the TVIB terminal board, the VVIB employs advanced signal processing techniques to digitize and analyze the data. This process ensures that the various vibration parameters, such as amplitude and frequency, are accurately captured and represented in a format suitable for further analysis.
- Communication with Controller via VME Bus: Once digitized, the processed vibration signals are transmitted over the VME (Versa Module Eurocard) bus to the controller unit. The VME bus serves as the communication interface, enabling seamless transfer of data between the VVIB and the controller, where the vibration data is further analyzed and utilized for monitoring and control purposes.
- Scalability and Flexibility: The design of the VVIB allows for the connection of multiple TVIB terminal boards, accommodating the monitoring requirements of complex turbine systems. With the capability to cable up to two TVIBs to the processor board, the system offers scalability to adapt to varying configurations and monitoring needs.
Vibration Monitoring and Analysis
- Vibration Protection and Parameter Display: The system is equipped with built-in vibration protection mechanisms designed to safeguard turbine operation against potential damage or malfunctions caused by excessive vibrations. Additionally, it offers a user-friendly interface for displaying essential vibration parameters, enabling operators to monitor the turbine's health in real-time.
- Active Signal Isolation: Each input is actively isolated, ensuring that signals from vibration sensors, such as proximitors, are accurately captured and transmitted without interference. This isolation mechanism enhances the reliability of the monitoring system by minimizing the risk of signal distortion or contamination.
- Direct Interface with Bently Nevada 3500 Monitor: The Mark VI system facilitates direct cabling to a Bently Nevada 3500 monitor, a renowned platform for vibration monitoring and analysis. By providing direct access to the signals from proximitors through four plugs, the system establishes a robust interface between the turbine control and the Bently Nevada monitoring system.
- Maximum Reliability: This configuration offers maximum reliability by establishing a direct interface from the proximitors to the turbine control system, ensuring rapid response and precise trip protection mechanisms in the event of abnormal vibrations. Simultaneously, it retains real-time data access to the Bently Nevada system for comprehensive static and dynamic vibration monitoring.
- Trip Protection and Real-Time Data Access: The direct interface between the turbine control system and the Bently Nevada monitor enables seamless integration of trip protection functionalities and real-time data access. This integration ensures that critical vibration events can trigger immediate protective actions while also facilitating in-depth analysis of vibration trends and patterns for proactive maintenance and performance optimization.
- Enhanced Monitoring Capabilities: By leveraging the combined strengths of the Mark VI system and the Bently Nevada 3500 monitor, operators gain access to enhanced monitoring capabilities, allowing for comprehensive analysis of vibration data across static and dynamic operating conditions. This holistic approach to vibration monitoring enables early detection of potential issues, leading to improved turbine reliability and operational efficiency.
Installation
- Power Down the VME Processor Rack: Before beginning the installation, it is imperative to power down the VME processor rack. This step is critical for both the safety of the installer and the protection of the hardware. Verify that all power sources to the VME processor rack are completely disconnected. This includes turning off power supplies and unplugging power cords if necessary.
- Insert the Board into the VME Rack: Carefully align the V-type board with the appropriate slot in the VME processor rack. Ensure that the board's edge connectors are correctly positioned to fit into the corresponding backplate connectors within the rack. Gently slide the board into the slot. Use a steady, even pressure to avoid bending the board or damaging the connectors.
- Secure the Edge Connectors: Once the board is partially inserted, use your hands to push the top and bottom levers located on the front of the board. These levers are designed to seat the board’s edge connectors firmly into the backplane connectors. Push the levers until you feel or hear a click, indicating that the board is securely seated. Proper engagement of the edge connectors is crucial for the board’s functionality and stability.
- Tighten the Captive Screws: On the front panel of the V-type board, locate the captive screws at both the top and bottom. These screws are designed to hold the board firmly in place within the VME rack. Use an appropriate screwdriver to tighten the captive screws. Ensure that the screws are snug but not overly tight to avoid stripping the threads or damaging the board. Perform a final check to ensure that the board is securely installed and that all connections are properly seated.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200VVIBH1BBA?
It is a Vibration Monitor Board developed by GE under the Mark VI series.
What types of limit checks are performed by the diagnostics?
Diagnostics conduct both a high/low limit check on the input signal (hardware) and a high/low system limit check (software).
Can the software limit check be adjusted?
Yes, the software limit check is adjustable in the field, providing flexibility to adapt to varying operational requirements and conditions.
What conditions trigger a probe fault, alarm, or trip?
If either of an X or Y probe pair exceeds its limits, a probe fault, alarm, or trip condition will occur. This ensures that any deviations from acceptable vibration levels are promptly identified and addressed.
How does the application software handle vibration trips in the presence of probe faults?
The application software will inhibit a vibration trip (the AC component) if a probe fault is detected based on the DC component. This precautionary measure prevents unnecessary trips and ensures that vibration-based protection mechanisms remain effective.
