GE IS200TVIBH2BBB

Description

Product Description

GE IS200TVIBH2BBB is a specialized terminal board designed for the GE Mark VIe Speedtronic turbine control system. This component, designated as a TVIB terminal board, serves as the dedicated interface for connecting vibration transmitters or monitoring systems to the Mark VIe controller. The primary function of the GE IS200TVIBH2BBB is to provide secure, conditioned termination points for analog signals representing turbine and generator bearing vibration (typically in units of mils or mm/s). It accepts the 4-20 mA or ±10 VDC output from proximity probe systems (like Bently Nevada) or seismic transmitters, conditions the signal, and presents it to the connected analog input module (e.g., a VIBI or other analog I/O pack). The accuracy and reliability of the IS200TVIBH2BBB are critical for continuous condition monitoring and protective alarming of rotating machinery. For protection engineers, ensuring the proper selection and wiring of terminal boards like the GE IS200TVIBH2BBB is a foundational step in implementing a reliable vibration monitoring scheme.

Product Parameters / Technical Specifications

• Manufacturer: GE (General Electric) / Emerson
• Series: Mark VIe Speedtronic Turbine Control System
• Functional Designation: Vibration Input Terminal Board (TVIB)
• Input Type: Accepts standard analog signals from vibration monitoring equipment:
  • 4-20 mA DC (most common for transmitter outputs)
  • ±10 VDC (common for direct probe system outputs)
• Channels: Provides termination for multiple vibration input channels (e.g., for X and Y axes of multiple bearings).
• Signal Conditioning: Typically includes circuitry for noise filtering, signal scaling, and may provide isolation or excitation power depending on the specific variant.
• Connections: Features high-density, screw-type terminal blocks for reliable field and system-side wiring.
• Interface: Plugs directly into a compatible Mark VIe analog input I/O pack or a dedicated vibration input module via a rear connector.
• Configuration: The board type and input scaling are configured within the Mark VIe ToolboxST engineering software.

Advantages and Key Features

• Dedicated Vibration Interface: Optimized for connecting critical machinery protection signals, ensuring proper signal integrity and reducing wiring errors compared to generic terminal blocks.
• Signal Integrity: Built-in filtering helps mitigate electrical noise interference, which is crucial for accurately measuring low-level vibration signals in electrically noisy turbine environments.
• Simplified System Integration: As a native Mark VIe component, the GE IS200TVIBH2BBB ensures seamless mechanical and electrical integration with the control rack, simplifying installation and maintenance.
• Clear Channel Identification: The board is clearly labeled for each vibration point (e.g., “GT Bearing #1 X”), facilitating correct wiring during installation and ease of troubleshooting.
• High Reliability: Constructed with industrial-grade components to provide a stable and long-lasting interface for continuous monitoring.

Application Cases in Industry

• Turbine Bearing Vibration Monitoring: The primary application for the IS200TVIBH2BBB is to interface vibration signals from radial and thrust bearings on gas turbines, steam turbines, and generators into the Mark VIe system for continuous monitoring, alarming, and potential trip functions.
• Critical Pump & Compressor Monitoring: Used to bring vibration signals from large, turbine-driven auxiliary pumps and compressors into the main control system for asset protection.
• Condition-Based Maintenance Programs: Provides the essential hardware interface for feeding vibration data into the plant’s predictive maintenance software, enabling trend analysis and early fault detection.
• Integration with Specialty Monitors: Can be used to accept analog outputs from specialized vibration monitors (e.g., for gearboxes) into the centralized DCS for operator awareness.

Comparison with Competing Products

Selection Suggestions and Precautions

1. Exact Model and Suffix Verification: The suffix (H2BBB) is critical. It defines the specific input type (current vs. voltage), input range, and possibly channel count. Using an incorrect version will result in measurement errors or a non-functional channel.
2. Verify Compatible I/O Pack: This terminal board must be paired with the correct Mark VIe analog input module (e.g., a specific model of a VIBI or general analog input pack). Consult the Mark VIe Hardware Configuration Guide.
3. Match Field Transmitter Output: Confirm that the output signal of your field vibration transmitter (almost always 4-20 mA) matches the input specification of the GE IS200TVIBH2BBB terminal board you are selecting.
4. Proper Wiring Practices: Use shielded, twisted-pair cable for all vibration signal wiring. Connect the cable shield to the designated ground terminal on the IS200TVIBH2BBB (typically at the system end only) to prevent ground loops and ensure noise immunity.
5. Software Configuration is Mandatory: The board’s channel configuration in ToolboxST (input type, scaling from mA to engineering units) must match its physical hardware configuration. Incorrect software scaling is a common source of inaccurate readings.
6. Sourcing: Source this terminal board from reputable suppliers who specialize in Mark VIe systems to ensure you receive the correct, specified variant.

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