Description
Product introduction
During turbine maintenance, unreliable vibration readings can make it difficult to distinguish a sensor fault from a wiring or control-system issue. The GE IS200TVBAH2ACC is associated with the TVBA terminal-board family, which provides connections for vibration and position sensors in compatible turbine monitoring architectures. The broader TVBA design supports sensor types such as proximity probes, seismic sensors, and Velomitor transducers, with channel use determined by the installed monitoring hardware.
For replacement work, verify the complete part number, board revision, connected vibration-monitor module, sensor types, and terminal assignments. The suffix H2ACC should not be assumed equivalent to other TVBA variants simply because the base designation is similar. Exact electrical limits and configuration details should come from the applicable hardware documentation.
Key technical specifications
| Parameter | Specification |
|---|---|
| Product model | IS200TVBAH2ACC |
| Manufacturer | General Electric |
| Product family | Speedtronic Mark VI / related Mark VIe hardware |
| Board designation | TVBA |
| Product type | Vibration input terminal / signal-interface board |
| Primary function | Field sensor termination and vibration-signal interfacing |
| Sensor types | Proximity, seismic, and Velomitor sensors are documented for the TVBA family; confirm the exact configuration |
| Channel arrangement | TVBA family documentation describes multiple vibration and position inputs; exact use depends on the associated monitor |
| Signal processing | The terminal board interfaces with associated monitoring hardware; do not assume it is a standalone processor |
| Working voltage | Confirm the applicable board manual and wiring diagram |
| Communication protocol | System-dependent; no standalone Modbus interface is confirmed for this exact part |
| Installation method | Compatible GE turbine-control cabinet and designated terminal-board arrangement |
| Operating temperature | Not verified for this exact suffix |
| Protection rating | Not established; conformal coating is reported in secondary product references |
| Operating accuracy | Not applicable as a standalone terminal-board specification |
The TVBA family’s sensor inputs, channel assignments, and jumper configuration are described in GE control-system documentation. These family-level details do not establish every specification for the exact IS200TVBAH2ACC assembly.
Major features and advantages
- Vibration-sensor termination: Provides a defined connection point between field sensor wiring and compatible vibration-monitoring hardware.
- Support for rotating-equipment monitoring: The TVBA family accommodates sensor types used to monitor shaft vibration, machine casing movement, and related position or reference signals.
- System-level signal integration: Works as part of the larger turbine monitoring architecture rather than replacing the monitor module that processes the signals.
- Configurable sensor connections: TVBA family documentation describes jumper selection for different sensor types. Configuration must match the connected transducers and associated monitor.
- Maintenance and replacement support: Correct identification of the terminal board can help preserve existing field wiring and reduce errors during a planned replacement.
IS200TVBAH2ACC
Application scenarios and common pain points
The board is relevant to vibration monitoring in turbine control installations and associated rotating machinery.
Common maintenance issues include:
- Missing or unstable vibration signals: Check sensor condition, field wiring, shields, terminal connections, and the associated monitor before concluding that the terminal board has failed.
- Incorrect sensor configuration: Verify jumper settings and the sensor type assigned to each input.
- Position or reference-channel faults: Check the configured channel use and wiring against the system drawing.
- Replacement incompatibility: Confirm the exact suffix, revision, and compatible monitoring module.
- Unverified electrical ratings: Do not apply voltage or connect sensor wiring based on specifications from a different TVBA variant.
Related products
| Model | Relationship |
|---|---|
| IS200TVBAH2A | Related TVBA terminal-board model; verify suffix and revision |
| IS200TVBAH2AAA | Related H2A TVBA variant |
| IS200TVBAH2ABC | Related H2A TVBA variant |
| IS200TVBAH1ACC | Related TVBA family variant with a different H1 designation |
| IS40yTVBAH2A | TVBA terminal-board family referenced in Mark VIe documentation |
| IS42yPVIBH1B | Mark VIe vibration-monitor module family |
| IS200WNPSH1A | Related negative-power-supply board family referenced in vibration-monitoring architectures |
These are related family references, not a list of guaranteed drop-in replacements. Confirm the full ordering code and system compatibility before substitution.
Engineer’s guide before ordering
- Match the nameplate: Verify IS200TVBAH2ACC exactly, including the suffix and revision markings.
- Check the installed signal path: Identify the associated vibration-monitor module, sensor types, channel assignments, and jumper positions.
- Request evidence of testing: For used or refurbished stock, request actual board photographs, connector inspection, test scope, condition details, and warranty terms.
Important: Follow the site’s approved isolation procedures before removing the board. Label sensor wires and shields before disconnecting them, and verify the terminal map before restoring the system to service.
Frequently asked questions
What is the GE IS200TVBAH2ACC used for?
It is associated with the GE TVBA vibration-input terminal-board family, which interfaces field vibration and position sensor wiring with compatible turbine monitoring hardware.
Is IS200TVBAH2ACC a vibration-monitor CPU?
The strongest documentation describes the TVBA as a terminal board and identifies a separate PVIB vibration-monitor module. Treat listings calling this exact part a standalone processor or monitor card with caution.
Which sensors can connect to the TVBA family?
GE documentation describes support for proximity probes, seismic sensors, and Velomitor transducers, with accelerometer support on specified channels in certain monitor configurations. Verify the exact hardware arrangement before wiring.
Can replace IS200TVBAH2A?
Do not assume so. Compare the full ordering codes, hardware revisions, wiring assignments, and compatible monitor module before approving a replacement.
What supply voltage does require?
The exact supply requirements for this suffix have not been independently established here. Refer to the applicable GE wiring diagram and board documentation rather than relying on generic online listings.
What should be checked when buying a replacement?
Verify the nameplate, board condition, terminal and connector integrity, sensor configuration, functional-test scope, and warranty. Confirm whether the quoted unit is new, unused, refurbished, or previously installed.
What information should a quotation request include?
Provide the full model number , quantity, required condition, destination, and any testing or warranty requirements. Request confirmation of stock status and dispatch timing before scheduling maintenance around delivery.
