IS200TVIBH2A | 24V Vibration Input Termination H2

Description

Product Introduction (Anti-Template)

Vibration monitoring is the primary protection against catastrophic turbine failure—and this board is where those critical signals terminate. The IS200TVIBH2A is the TVIB (Terminal Board Vibration) variant for the Mark VIe system, designed to terminate vibration monitoring signals from accelerometers and proximity probes. This board handles the interface between the Mark VIe controller and the sensors that protect your turbine from bearing wear, shaft misalignment, and blade-pass events.

The ‘H2A’ designation indicates a high-density variant with the ‘A’ revision. The H2 density offers more vibration input channels per board than the H1, saving rack space in vibration-intensive applications. The ‘A’ revision brings improved signal conditioning and better noise rejection. Compared to the base IS200TVIBH2, the ‘A’ offers about 10% better signal-to-noise ratio on the vibration channels. This board is a drop-in replacement for the IS200TVIBH2, with no software changes required.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200TVIBH2 — The base revision without the ‘A’ suffix. Identical pinout, mounting, and software interface. The ‘A’ revision has improved signal conditioning and better noise rejection. No software changes required.

⚠️ Software Compatible: IS200TVIBH1A — Lower-density H1 variant. Fits the same slot but has fewer vibration channels. Requires software reconfiguration. Budget 4-6 hours.

⚠️ Software Compatible: IS200TVBAH2A — Similar vibration board but with different sensor interface. Verify compatibility with your specific sensors before substituting.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O board. Requires external vibration signal conditioning and complete rework. Budget 8-12 hours.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application.

Frequently Asked Questions (FAQ)

Q: What types of vibration sensors does the TVIB board support?

A: The TVIB supports accelerometers and proximity probes (eddy current probes) commonly used for turbine shaft and bearing vibration monitoring. The board provides the necessary signal conditioning for both sensor types.

Q: What’s the difference between the H1 and H2 variants?

A: The H2 variant has higher channel density—more vibration input channels per board than the H1. This saves rack space in applications with extensive vibration monitoring requirements.

Q: What improvements does the ‘A’ revision have over the base TVIBH2?

A: The ‘A’ revision has improved signal conditioning for better signal-to-noise ratio—about 10% better noise rejection on the vibration channels.

Q: What’s the difference between TVIB and TVBA boards?

A: Both handle vibration signals, but TVIB and TVBA boards may have different signal conditioning or interface specifications for specific sensor types. Verify compatibility with your specific vibration sensors and application before substituting between variants.

Q: Can I replace a TVIBH2 board with a TVIBH2A without any changes?

A: Yes. The ‘A’ is a drop-in replacement. No software changes, no wiring changes, no configuration changes.

Q: Is the TVIB board hot-swappable?

A: We advise against hot-swapping vibration input boards. Interrupting vibration signals while the turbine is running could cause protection logic issues. Power down the cabinet segment before swapping.

Q: What bench testing should I do before installing a TVIB board?

A: Standard vibration input protocol. First, visual inspection. Second, verify continuity. Third, apply power and verify the board’s response using a vibration simulator or function generator. Fourth, verify signal conditioning settings. Fifth, run a 24-hour stability test at 50°C ambient.

Q: How do I verify I’m getting a genuine TVIB board?

A: Check component markings against GE documentation. Weigh the board; should be about 375 grams. Look for the GE holographic security label.

Q: Where do I find the official wiring diagram for the TVIBH2A?

A: GE document GEK-130556 covers the TVIB series. The H2 variant is detailed in the section specific to that configuration. Pay special attention to the sensor wiring requirements—different sensors have different wiring schemes. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating.

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