GE IS200TVBAH2ACC Vibration Signal Termination Board

Technical Specifications

Model: IS200TVBAH2ACC

Part Number: IS200TVBAH2ACC，MRP702115

Brand: GE（GE Vernova）

Product Type: TVBA vibration‑position signal termination board

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

Power Supply:24‑28VDC

Input Channels:14‑channel sensor input, support proximity probe, seismic velocity sensor, accelerometer, Keyphasor speed reference probe

Signal Output:Multi‑group BNC buffered output, 37‑pin rear‑board connector

Protection:Per‑channel EMI filter and transient surge suppression

Coating:ACC acrylic conformal coated for harsh environment

Installation:Mark VI VME rack plug‑in installation

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Protection Class:IP20

Weight:0.52kg

Dimension:178mm ×127mm ×42mm

Compatible System:Power plant gas‑steam turbine, generator unit control cabinet

Core Function：TVBA vibration signal termination board for Mark VI turbine control system. It serves as physical interface for field vibration and shaft displacement sensors. Completes sensor excitation, signal filtering, transient suppression and signal buffering. Transmits conditioned vibration, shaft position and Keyphasor speed‑phase signals to PVIB/VVIB processing pack. Supports simplex and TMR triple‑modular redundant architectures, realizes turbo‑generator unit vibration monitoring, bearing condition assessment and mechanical fault early warning. Reserved BNC buffer interface can connect to external vibration monitoring instruments.

Product Details

The IS200TVBAH2ACC (MRP702115) is TVBA series vibration‑position termination board for GE Mark VI Speedtronic turbine control system.

This plug‑in board is installed inside Mark VI VME standard rack, equipped with barrier‑type terminal blocks for field sensor wiring. It is compatible with multiple common rotating‑machine sensors, provides sensor excitation power, suppresses high‑frequency interference and voltage transient spikes from field cables. Multi‑group BNC buffered output ports facilitate on‑site debugging and access to third‑party monitoring equipment such as Bently Nevada monitoring racks. Processed vibration, axial displacement and Keyphasor phase reference signals are transmitted to PVIB/VVIB vibration processing pack for high‑precision data calculation, providing core monitoring data for turbine protection and predictive maintenance logic.

ACC conformal coating enhances moisture‑proof, dust‑proof and anti‑corrosion performance of circuit board, improves anti‑vibration and anti‑interference capability, adapts to severe electromagnetic environment of power‑plant turbine hall, supports simplex and TMR triple‑modular redundant safety control configuration.

It belongs to key vibration monitoring spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for turbine vibration‑position measuring loop debugging and defective IS200TVBAH2ACC board replacement.