IS230TVBAH1A - Vibration Terminal Board

IS230TVBAH1A - Vibration Terminal Board IS230TVBAH1A - Vibration Terminal Board

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Part No.: IS230TVBAH1A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Technology: Surface-mount
Temperature Operating: -30 to 65oC
Product Type: Vibration Terminal Board
Availability: In Stock
Series: Mark VIe

Functional Description

IS230TVBAH1A is a Vibration Terminal Board developed by GE. It is a part of Mark VIe control system. The Vibration Terminal Board (TVBA) serves as an interface board for the Mark VIe I/O pack PVIB, ensuring seamless communication and integration within the Mark VI system. This board works in conjunction with the VVIB board within the system, each playing a specific role to support effective vibration monitoring and data collection.

Key Functions

  • Signal Interface for Sensors: The board directly interfaces with various types of vibration sensors, including seismic (velocity) sensors, Proximitors, Velomitors, and accelerometer-type probes. This direct interface is essential for accurately capturing vibration data from different types of sensors used in industrial applications.
  • Signal Conditioning and Protection: The board incorporates mechanisms to suppress unwanted signal noise, ensuring that the data captured is clean and reliable. EMI protection is built to shield the input signals from external electromagnetic disturbances, which could otherwise compromise the integrity of the data.
  • Open Circuit Detection: Includes a pull-up bias for each input signal, which facilitates the detection of open circuits. This feature is critical for identifying and diagnosing issues with sensor connections, ensuring continuous and reliable monitoring.
  • Signal Transmission: The conditioned and protected signals are transmitted to the Mark VIe I/O packs via a 37-pin connector. This standardized connector ensures a secure and efficient transfer of data between the terminal board and the I/O packs.
  • Simplex or TMR Configurations: Designed to support both simplex and Triple Modular Redundancy (TMR) applications. In simplex configurations, a single path of signal transmission is used. For TMR applications, the signal is fanned out to three separate I/O packs, providing redundancy and enhancing system reliability by ensuring that multiple independent paths can validate the data.
  • Seismic (Velocity) Sensors: These sensors measure the velocity of ground movements or structural vibrations. The direct interface ensures accurate data capture from these sensors.
  • Proximitors and Velomitors: These are specialized sensors for measuring displacement and velocity, respectively. The card supports these sensors, facilitating their integration into the vibration monitoring system.
  • Accelerometer-Type Probes: Used for measuring acceleration, these probes provide critical data for understanding the dynamics of machinery and structures. The TVBA ensures that signals from these probes are accurately captured and transmitted.
  • Signal Suppression and EMI Protection: By incorporating signal suppression and EMI protection, the TVBA enhances the quality and reliability of the data. Signal suppression minimizes noise, while EMI protection guards against interference from external electromagnetic sources.
  • Open Circuit Detection: The pull-up bias feature allows the system to detect if a sensor connection is broken, providing immediate feedback on the integrity of the sensor network. This feature is essential for maintaining continuous monitoring and quickly identifying issues.
  • 37-Pin Connector: This connector standardizes the interface between the TVBA and the Mark VIe I/O packs, ensuring reliable and efficient data transmission.
  • Simplex vs. TMR: In simplex applications, the TVBA handles a straightforward data path, suitable for less critical applications. In TMR applications, the signal is distributed to three separate I/O packs. This redundancy is vital for critical applications where system reliability and data integrity are paramount.


  • Designed to accept 14 sensor inputs, each of which is wired directly to two I/O terminal blocks. These terminal blocks are secured with two screws each and feature 24 terminals capable of accepting wires up to 12 AWG. Adjacent to each terminal block is a shield termination attachment point, which ensures proper grounding and shielding of the sensor inputs, enhancing the signal integrity and reducing electromagnetic interference.
  • Configuration of Input Channels 1 through 8: The first eight input channels on the TVBA are versatile and support a range of sensor types, including Proximitors, Seismics, and Accelerometers (specifically on channels 1, 2, and 3), as well as Velomitors. Each channel is equipped with a current-limited -24V power supply, ensuring that the sensors receive the appropriate power for their operation. These channels also feature various configuration jumpers:
    • JPxA Jumper: This jumper allows for configuring the open circuit check support and provides a 3mA constant current feed necessary for Velomitors, ensuring that these sensors operate correctly and their signals are accurately detected.
    • JPxB Jumper: This jumper is used to configure the JA1 and JB1 outputs specifically for integration with the Bently Nevada 3500 rack, a popular monitoring system.
    • JPxC Jumper: This jumper configures the PR0xL terminal. It can be set to 'Open' for a true differential input or connected to PCOM for a -24V return, providing flexibility based on the specific requirements of the sensor configuration.
  • Configuration of Input Channels 9 through 12: Channels 9 through 12 are dedicated solely to Proximitors sensors. These channels also feature a current-limited -24V power supply per channel, ensuring reliable sensor operation. Unlike the first eight channels, these do not have jumper configurations, simplifying the setup process for these specific sensors.
  • Configuration of Input Channel 13: Input Channel 13 supports both Proximitors and Keyphasor proximity sensors, offering flexibility in sensor type. Similar to the previous channels, it is equipped with a current-limited -24V power supply to ensure the sensors operate within their required parameters. This channel does not require any jumper configurations, streamlining its setup and use.
  • Power Supply Board (WNPS): The power supply board plays a critical role in the TVBA's operation by converting the +28V supplied from the PVIB to the -28V used by the current-limited -24V outputs. Each PVIB is equipped with one WNPS board. The board features independent +28V inputs and a common -28V bus shared among all three WNPS units. This setup ensures that each sensor channel receives a stable and appropriate power supply, crucial for the reliable operation of the sensors and accurate data transmission to the Mark VIe system.

The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS230TVBAH1A?
It is a vibration terminal board developed by GE under the Mark VIe series.

What diagnostic tests are performed on the terminal board?
The TVBA terminal board undergoes several diagnostic tests to ensure the proper functioning and reliability of the system. These tests include open circuit detection and cable connector identification.

How does the terminal board detect open circuits?
The board is equipped with open circuit detection for each vibration input. If any input experiences an out-of-range voltage, the I/O processor will generate a diagnostic alarm (fault). This ensures that any issues with the sensor inputs are promptly identified and addressed.

What happens if there is an out-of-range voltage detected on the TVBA terminal board?
When an out-of-range voltage is detected on any of the vibration inputs, the I/O processor creates a diagnostic alarm. This alarm indicates a fault, alerting maintenance personnel to check and resolve the issue with the affected input.