Description
| Parameter | Specification |
| Model Number | IS200VVIBH1CAC |
| Manufacturer | General Electric (GE) |
| Series | Mark VI Speedtronic |
| Board Type | Vibration Monitor Terminal Board |
| Input Type | Seismic, Proximitor, or Accelerometer |
| Channels | 8 or 13 Channels (depending on terminal board) |
| Frequency Response | 0.5 Hz to 10 kHz |
| A/D Conversion | 16-bit High-Resolution Sampling |
| Power Supply | +24V DC / +/- 15V DC via VME Rack |
| Operating Temp | -30 to +65°C (-22 to +149°F) |
GE IS200VVIBH1CAC
GE IS200VVIBH1CAC
GE IS200VVIBH1CAC
The GE IS200VVIBH1CAC is a specialized vibration monitoring interface within the Mark VI Speedtronic control architecture, primarily used for tracking the mechanical integrity of gas or steam turbines. This circuit board processes high-speed signals from proximity probes and seismic sensors to provide real-time data on shaft radial vibration, axial position, and casing stability. By converting analog transducer outputs into digital values for the VME processor, the VVIBH1CAC ensures that the control system can trigger protective trips or alarms if mechanical tolerances are exceeded.
Operational Guidelines and Maintenance
Product Operation Tips:
- Sensor Calibration: Verify that the scale factor in the software matches the specific sensitivity (e.g., 200 mV/mil) of the connected proximity probes.
- Shielding: Ensure all vibration sensor cables are properly shielded and grounded at the terminal board to prevent electromagnetic interference from masking actual vibration data.
- Firmware Sync: When replacing a VVIB board, confirm that the I/O configuration in the system matches the hardware revision to avoid communication errors.
Maintenance Procedures:
- Terminal Integrity: Check for loose screw connections on the associated terminal blocks (TBCV or TBVV), as vibration can cause mechanical loosening over time.
- Contact Cleaning: Use an approved electronics cleaner on the VME backplane pins if the board shows intermittent “Loss of Signal” (LOS) faults.
- Thermal Monitoring: Ensure the cooling fans in the Mark VI rack are functional, as high-speed processing boards like the VVIB generate more heat than standard discrete I/O modules.
