GE IS200VVIBH1CAC VVIB Vibration Monitoring Input Board

The IS200VVIBH1CAC (VVIB) is a dedicated vibration signal acquisition VME board designed for GE Speedtronic Mark VI turbine control systems. It collects AC vibration signals from eddy current proximity probes mounted on turbine shafts, bearings and gearboxes, converting high-frequency vibration waveforms into digital data for rotor unbalance, bearing wear and shaft rub monitoring.

This single-slot plug-in module matches TVIB terminal baseplates, with fully conformal coated PCB to withstand high temperature, dust and mechanical vibration in turbine control rooms. It supports hot-swap maintenance without rack power shutdown, built-in band-pass filtering and full sensor wire break detection to guarantee continuous vibration protection for power generation equipment.

Main Specifications

• Brand: GE General Electric; Model: IS200VVIBH1CAC; Series: Speedtronic Mark VI Turbine Control System
• Vibration Input Channels: 8 independent proximity probe input channels for shaft vibration monitoring
• Signal Compatibility: Eddy current 24V powered proximity probes, AC displacement vibration signals
• Signal Processing: High-precision ADC sampling, built-in adjustable band-pass filter for rotational frequency vibration
• Isolation Performance: Channel-to-backplane isolation with surge suppression to block industrial electromagnetic noise
• Backplane Interface: Standard VME bus, low power consumption, single slot rack installation
• Matching Accessories: TVIB vibration terminal baseplates and shielded low-noise probe cables
• Operating Environment: -30℃ ~ +65℃ working temperature, 5%–95% RH non-condensing, anti-vibration industrial grade
• Diagnostics: Front panel LED indicators for power, bus communication and probe open/short circuit faults
• Certifications: CE, UL industrial certification, meets turbine vibration safety monitoring standards

Core Functions

• Supply stable excitation power to eddy current proximity probes and collect real-time shaft displacement vibration signals of turbine rotors and bearings.
• Filter out irrelevant high-frequency interference signals, extract effective rotor vibration amplitude and frequency data for equipment health evaluation.
• Transmit processed digital vibration data to main CPU via VME bus to trigger vibration alarm and trip protection when vibration exceeds safety limits.
• Real-time channel self-diagnosis automatically detect probe wire break, signal attenuation and channel short-circuit faults, upload alarms to system HMI instantly.
• High-speed continuous waveform storage records vibration abnormality curves for post-failure analysis and equipment maintenance judgment.
• Hot-swappable modular design allows independent board replacement without cutting off power to the entire turbine control rack to reduce unit downtime.

Application Scenarios

• Vibration monitoring spare replacement for GE Mark VI gas turbine and steam turbine control racks in combined cycle power plants.
• Shaft vibration detection spare parts for petrochemical large centrifugal compressors and offshore platform power generation units.
• Maintenance backup inventory for waste heat power stations, industrial furnace power generation auxiliary control cabinets.
• Matching vibration acquisition board paired with Mark VI main CPU, TVIB terminal bases and eddy current proximity probes.
• Retrofit replacement components for aging turbine control systems with vibration reading drift and probe fault detection failure.

• Global aftermarket spare stock for power generation maintenance teams managing legacy GE Speedtronic turbine control equipment worldwide.