WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | General Electric |
| Model | IS200VVIBH1CAC |
| Board Function | Vibration monitoring and protection signal processing |
| System Family | GE Mark VI / EX2100 |
| Board Format | VME rack-mounted PCB |
| Field Interface | DVIB or TVIB terminal board |
| Maximum Probe Count | Up to 14 vibration/protection probes |
| Signal Resolution | 16-bit; confirm exact channel configuration |
| Supported Measurements | Vibration, rotor eccentricity, differential expansion, axial position |
| Supported Probe Types | Proximity, seismic, velocity, and accelerometer sensors |
| Probe Power | Supplied by the VVIB board in simplex or TMR configurations |
| Backplane Connectors | P1 and P2 |
| Front Indicators | FAIL, STATUS, and RUN |
| Backplane Interface | VME bus |
| Board Revision | H1C functional hardware; C/A fabrication and revision suffixes |
| Terminal Connections | Via compatible DVIB or TVIB terminal board |
| Approximate Dimensions | 28 × 12.6 × 3.5 cm; verify cabinet drawing |
| Approximate Weight | 0.38 kg; verify shipping weight |
| Installation | Mark VI VME control rack |
| Protection Features | Conformal-coated board and metallic faceplate on listed assemblies |
| Application | Gas, steam, and other turbine rotating-equipment monitoring |
The product identity and core application are supported by GE Mark VI supplier references; exact channel allocation, resolution, and terminal-board compatibility should be confirmed against the site’s GE Mark VI documentation.
Product Introduction
The GE IS200VVIBH1CAC is a Mark VI VME vibration monitor board that receives turbine-monitoring signals through DVIB or TVIB terminal boards. It can process signals from up to 14 probes for vibration, rotor eccentricity, differential expansion, and axial-position protection functions.
The board includes VME backplane connectors P1 and P2, front-panel FAIL/STATUS/RUN indicators, and support for multiple GE-compatible vibration probe types. Confirm the terminal-board model, simplex or TMR architecture, probe type, Mark VI rack position, and complete board revision before replacement.
IS200VVIBH1CAC
IS200VVIBH1CAC
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| VVIB board shows no RUN indication | Missing rack power, poor VME seating, backplane fault, failed board | ✅ High | Check rack supply and inspect P1/P2 seating; compare status LEDs with an adjacent healthy board | Verify rack power and backplane connections before replacing the VVIB |
| FAIL LED is illuminated | Internal board self-test failure, configuration mismatch, terminal-board fault | ✅ High | Record the LED state and Mark VI diagnostic message; compare with the system fault log | Replace only after confirming the terminal board and rack position are healthy |
| All vibration channels are invalid | TVIB/DVIB supply failure, common cable fault, VME communication problem | ✅ High | Check terminal-board power, connector seating, and representative sensor excitation | Troubleshoot common wiring and terminal-board supply before replacing the board |
| One channel reads zero | Open probe loop, damaged cable, missing sensor power, failed input channel | ⚠️ Medium | Measure the probe circuit and excitation at the assigned terminal-board channel | Repair the field circuit first; replace the board only if the channel fails a known-good input test |
| Several adjacent channels fail | Terminal-board connector, ribbon cable, common supply, board input section | ✅ High | Compare failed channels with the terminal-board connector grouping and inspect cable continuity | Check DVIB/TVIB and cabling before condemning the VVIB board |
| Vibration value is stuck high | Shorted or miswired proximity probe, incorrect probe gap, failed signal conditioner | ⚠️ Medium | Verify probe bias voltage, gap, cable shield, and waveform at the terminal board | Correct probe installation and gap before changing the monitor board |
| Vibration value is noisy | Shielding problem, damaged cable, loose connector, electromagnetic interference | ❌ Low | Inspect shield termination and compare the waveform with the sensor isolated from nearby power wiring | Correct grounding and cable routing before replacing the VVIB |
| Axial-position or eccentricity value is wrong | Probe polarity, calibration, gap, configuration scaling, wrong terminal-board channel | ⚠️ Medium | Compare probe gap and engineering-unit scaling with the original channel configuration | Verify sensor setup and Mark VI configuration before hardware replacement |
| TMR channel disagrees with the other two channels | One sensor, cable, terminal channel, or VVIB input path has drifted | ⚠️ Medium | Compare R/S/T channel values and swap only approved test components | Identify the divergent leg systematically; do not replace all three boards without evidence |
| Board is not recognized by the controller | Incorrect rack slot, wrong board revision, VME bus fault, ID/configuration mismatch | ✅ High | Confirm slot assignment, board label, and Mark VI I/O configuration; inspect VME diagnostics | Match the board revision and configured slot before commissioning |
| Fault appears after replacing the board | Wrong terminal-board type, changed configuration, probe-power mismatch, revision incompatibility | ✅ High | Photograph the original settings and compare rack slot, terminal board, firmware, and configuration | Restore the original configuration and validate each channel with a known signal |
| Vibration trips after startup | Genuine mechanical vibration, incorrect alarm limits, sensor gap issue, signal scaling error | ⚠️ Medium | Compare raw vibration, filtered vibration, speed, and trip thresholds; verify probe installation | Treat the alarm as a possible machine-protection event, not automatically as a board failure |
Support note: Contact technical support with photos of the complete board label, terminal-board model, rack slot, FAIL/STATUS/RUN LEDs, probe wiring, controller diagnostic logs, and representative channel values.
Frequently Asked Questions (FAQ)
What does the GE IS200VVIBH1CAC do?
It processes vibration and related rotating-equipment protection signals in a GE Mark VI turbine control system. Depending on the configured terminal board and application, it can monitor vibration, rotor eccentricity, differential expansion, and axial position.
Which terminal boards work with the IS200VVIBH1CAC?
Supplier documentation identifies DVIB and TVIB terminal boards as the field-interface boards for this VVIB assembly. Verify the exact terminal-board part number and wiring diagram before connecting probes; similar-looking GE terminal boards may have different signal assignments.
How many probes can this board handle?
Listings commonly specify up to 14 probe inputs. The actual usable count depends on the terminal-board model, sensor types, simplex or TMR architecture, and the Mark VI configuration. Confirm channel allocation in the site application files and GE system drawings.
Is the IS200VVIBH1CAC a standalone vibration monitor?
No. It requires a compatible GE Mark VI rack, VME backplane, terminal board, controller configuration, and correctly wired vibration probes. It does not replace the DVIB/TVIB terminal board or the turbine protection logic.
Can I hot-swap this board?
Do not assume hot replacement is permitted. A VVIB board participates in turbine monitoring and protection, so removing it can create invalid signals or protection-system alarms. Follow the GE Mark VI maintenance procedure, place the affected protection function in an approved maintenance state, and obtain authorization before removing the board.
Will replacing the board change the probe calibration?
The board replacement does not automatically correct probe gap, cable faults, or machine calibration. However, the replacement may require configuration verification, channel validation, and comparison against the original board’s settings. Record probe bias, gap, scaling, alarm limits, and channel assignments before removal.
Is the IS200VVIBH1CAC still available as a new factory part?
This is a legacy GE Mark VI board, so supplier inventory may consist of new surplus, used, repaired, or refurbished units. Request the complete label photo, functional revision, terminal-board compatibility, test report, warranty, and return terms. Do not accept a generic VVIBH1C listing without confirming the full suffix.
