GE IS200TVBAH2ACC Vibration Input Terminal Board

Technical Specifications

Model: IS200TVBAH2ACC

Part Number: IS200TVBAH2ACC，MRP646218

Brand: GE（GE Vernova）

Product Type: Vibration input terminal board

Matching System: GE Speedtronic Mark VI turbine control system, cooperate with PVIB/VVIB vibration I/O pack

Power Supply:28VDC control rack power supply, working voltage 18‑30VDC

Signal Channel: Multi‑channel vibration and displacement input, compatible with proximity probes, accelerometers

Sensor Excitation: On‑board excitation power supply for eddy‑current probes

Signal Processing: Built‑in filter circuit, transient surge suppression, signal conditioning

Test Interface: BNC test ports for on‑site vibration signal measurement

Connector: 37‑pin D‑sub connectors for connecting vibration I/O pack; barrier‑type terminal blocks for field sensor wiring

Redundancy Mode: Support simplex and TMR triple‑modular redundant system configuration

Installation: Cabinet panel mounting

Operating Temperature:‑40℃ ~ +85℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.61kg

Dimension:165mm ×120mm ×24mm

Compatible System:Gas‑steam turbine, generator unit, compressor vibration monitoring cabinet

Core Function

Vibration input terminal board for Mark VI turbine control system. It serves as physical signal interface between field vibration/displacement sensors and PVIB/VVIB vibration I/O pack. It provides excitation power for proximity probes, completes signal conditioning, filtering and interference suppression for vibration signals. Transmits processed signals to vibration I/O pack for data analysis. Supports TMR triple‑modular redundant architecture, realizes real‑time monitoring of bearing vibration, shaft displacement of turbo‑generator unit, provides early warning for mechanical wear and unbalance faults.

Product Details

The IS200TVBAH2ACC (MRP646218) is TVBA series vibration input terminal board for GE Speedtronic Mark VI turbine control system.

This panel‑mount terminal board must be used together with PVIB/VVIB vibration I/O pack and cannot work independently. It receives raw signals from eddy‑current proximity probes and accelerometers on turbine site, supplies stable excitation power for probes, and filters high‑frequency interference and pulse noise mixed in sensor loop. Reserved BNC test ports facilitate field maintenance personnel to directly measure vibration waveforms with portable instruments without disconnecting wiring. Barrier‑type terminal blocks are convenient for sensor wiring and later replacement work. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to high‑temperature and harsh working environment of turbine cabinet. It is widely applied in simplex and TMR triple‑modular redundant gas‑steam turbo‑generator unit monitoring cabinets.

It belongs to important vibration monitoring spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for vibration loop debugging and defective IS200TVBAH2ACC board replacement.