Overview
Configured for vibration signal acquisition and digitization in the GE Mark VI system, the General Electric IS200VVIBH1C (IS200VVIBH1C Vibration Monitor Board) receives probe signals from TVIB or DVIB terminal boards. It samples, converts, scales, and transfers vibration data to the controller through the VME bus.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200VVIBH1C |
| Brand | General Electric |
| Series | Mark VI |
| Product Type | Vibration Monitor Board |
| Origin | United States (USA) |
| Terminal Board Interface | TVIB or DVIB |
| Probe Capacity | Up to 14 probes per terminal board |
| TVIB Connection | Up to two TVIB terminal boards |
| Controller Interface | VME bus |
| Supported Probe Types | Proximity, Velocity, Acceleration, Seismic, Phase |
| Proximitor Supply | -28 VDC |
| Individual Excitation Sources | -23 to -26 VDC |
| Sampling Rate | Up to 4600 samples per second |
| Signal Processing | A/D conversion, maximum/minimum accumulation, vibration calculation, filtering |
| Proximitor Measurement | Peak-to-peak displacement in engineering units |
| Velocity Measurement | Peak velocity in engineering units |
Vibration Signal Processing and VME Communication
The VVIB board receives vibration signals returned from the TVIB or DVIB terminal board. It performs A/D conversion and transfers the resulting data to the Mark VI controller through the VME bus.
The board supports Bently Nevada Proximitor, Seismic, Accelerometer, and Velomitor probes. In simplex or TMR configurations, the VVIB boards provide probe excitation.
For Proximitor operation, the VVIB supplies -28 VDC to the terminal board. In TMR systems, a diode high-select circuit selects the highest -28 VDC bus for redundancy. Individual regulators provide short-circuit-protected excitation sources from -23 to -26 VDC.
The board samples probe inputs at rates up to 4600 samples per second. It accumulates maximum and minimum values over defined time periods, calculates the difference between them, and applies filtering. The resulting peak-to-peak voltage is then scaled into engineering units for displacement or velocity measurements.
Frequently Asked Questions
Q: How many probes can the IS200VVIBH1C support through a terminal board?
A: Up to 14 vibration probes can connect directly to a TVIB or DVIB terminal board.
Q: How does the IS200VVIBH1C transfer processed vibration data?
A: The board digitizes the returned probe signals and sends the processed data to the controller through the VME bus.
Q: What excitation voltage does the VVIB provide for Proximitor operation?
A: The VVIB supplies -28 VDC to the terminal board. Individual excitation sources operate from -23 to -26 VDC and include short-circuit protection.
Field Installation Guidelines
- Turn off the VME processor rack before installing the board.
- Align the board with the rack guides and slide it into position.
- Seat the board edge connectors by pushing the top and bottom levers inward by hand.
- Tighten the captive screws at the top and bottom of the front panel.
- Verify the terminal-board wiring before applying power.
- Route vibration probe wiring separately from high-current switching conductors where practical.
- Maintain appropriate cable shielding and grounding practices for vibration signal circuits.
- Confirm that the installed terminal board and probe configuration matches the required Mark VI vibration monitoring architecture.
