GE IS200VTURH2BAC VTUR Turbine Monitoring Board

The IS200VTURH2BAC (VTUR) is a dedicated speed monitoring board for GE Speedtronic Mark VI turbine control systems, adopting standard VME single-slot architecture. It receives pulse signals from turbine magnetic pickup sensors, precisely calculates real-time rotor speed, and executes multi-stage overspeed protection logic to prevent gas and steam turbines from dangerous overspeed runaway faults during startup, load operation and shutdown phases.

This pluggable board matches dedicated speed signal terminal baseplates, with fully conformal coated PCB resistant to high temperature, vibration and dust in turbine control rooms. It supports hot-swap replacement without rack power interruption, independent channel signal filtering and full sensor wire break detection to ensure reliable overspeed protection for power generation units under continuous operation.

Main Specifications

• Brand: GE General Electric; Model: IS200VTURH2BAC; Series: Speedtronic Mark VI Turbine Control System
• Speed Input Channels: 4 independent magnetic pickup pulse input channels, compatible with active and passive speed sensors
• Frequency Range: 2Hz ~ 15kHz, supports low-speed startup monitoring and full-load rated speed measurement
• Protection Logic: Multi-level overspeed trip, speed deviation alarm, loss of speed signal protection functions
• Signal Processing: Hardware high-frequency filtering, anti-surge circuit to suppress interference from rotating machinery
• Backplane Interface: Standard VME bus, high-speed real-time communication with main control CPU
• Environment: Operating -30℃ ~ +65℃, 5%–95% RH non-condensing, anti-vibration industrial grade
• Diagnostics: Front panel LED indicators for power supply, bus communication and sensor signal loss faults
• Certifications: CE, UL industrial control certification, meets turbine overspeed safety protection standards

Core Functions

• Capture pulse frequency signals from turbine rotor magnetic pickups, convert frequency data into accurate real-time rotating speed values.
• Execute independent hardware overspeed judgment, output hardwired trip signals to cut off fuel supply when rotor speed exceeds safety threshold.
• Multi-channel redundant speed acquisition ensures valid speed data even if one pickup sensor fails, avoiding false unit shutdown.
• Built-in signal filtering eliminates electromagnetic noise from frequency converters and auxiliary motors to stabilize speed measurement accuracy.
• Real-time self-diagnosis detects sensor wire break, signal attenuation and channel abnormal faults, uploading alarm data to system monitoring HMI.
• Hot-swappable single-slot modular design allows independent board replacement without powering off the entire turbine control rack.

Application Scenarios

• Speed monitoring spare replacement for GE Mark VI gas turbine and steam turbine control racks in combined cycle power plants.
• Overspeed protection 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 speed acquisition board paired with Mark VI main CPU, speed signal terminal bases and magnetic pickup sensors.
• Retrofit replacement components for aging turbine control systems with speed reading deviation and overspeed detection failure faults.

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