GE IS200VRTDH1DAB VRTD RTD Temperature Input Board

The IS200VRTDH1DAB (VRTD) is a dedicated VME bus RTD temperature acquisition board for GE Speedtronic Mark VI/Mark VIe turbine control systems. It collects resistance temperature signals from turbine lube oil, bearing, exhaust and cooling components, converts resistance values into precise digital temperature data, and transmits data to the main CPU via the rack backplane for real-time thermal monitoring and over-temperature protection logic judgment.

This single-slot pluggable board matches dedicated RTD terminal baseplates, with full conformal coated PCB to resist high temperature, vibration and dampness in turbine workshops. It supports hot-swap maintenance without rack power cut-off, built-in independent channel isolation and complete wire break/short-circuit self-diagnosis to guarantee stable long-term operation of power generation units.

Main Specifications

• Brand: GE General Electric; Model: IS200VRTDH1DAB; Series: Speedtronic Mark VI / Mark VIe Turbine Control
• RTD Channels: 16 configurable temperature input channels, compatible with 3-wire/4-wire Pt100, Pt1000, Cu100 sensors
• Measurement Performance: 16-bit ADC conversion, ±0.2°C high precision, 40ms fast scan cycle (25Hz sampling)
• Signal Isolation: 1500VAC channel-to-backplane isolation, anti-surge & high-frequency noise suppression circuit
• Backplane Interface: Standard VME dual-edge connector, low power consumption ≤12W, single slot rack installation
• Matching Accessories: Dedicated RTD terminal baseplates and shielded signal cables for field sensor wiring
• Operating Environment: -30℃ ~ +65℃ working temperature, 5%–95% RH non-condensing, anti-vibration industrial grade
• Diagnostic Indicators: 3 front panel LEDs for power supply, bus communication and channel fault alarm status
• Certifications: CE, UL industrial control compliance, meets thermal protection standards for power generation turbines

Core Functions

• Provide stable excitation current for field RTD temperature sensors, accurately acquire resistance signals reflecting equipment real-time temperature.
• Onboard high-precision signal conditioning eliminates interference from turbine inverters and rotating machinery to ensure consistent temperature measurement data.
• Convert analog resistance signals into standardized digital temperature values, upload real-time data to the main controller through VME high-speed bus.
• Per-channel self-diagnosis automatically detects open circuit, short circuit and abnormal lead resistance faults, uploading alarm signals to system HMI instantly.
• Hot-swappable modular design allows independent board replacement without shutting down the entire turbine control rack to reduce unit downtime.
• Continuous temperature data storage supports historical curve query and over-temperature fault record for post-failure maintenance analysis.

Application Scenarios

• Temperature monitoring spare replacement for GE Mark VI/VIe gas turbine and steam turbine control racks in combined cycle power plants.
• Turbine thermal signal spare parts for petrochemical large centrifugal compressors and offshore platform power generation units.
• Maintenance backup inventory for waste heat power stations, metallurgical furnace power generation auxiliary control cabinets.
• Matching temperature acquisition board paired with Mark VI main CPU, RTD terminal bases and Pt100 bearing temperature sensors.
• Retrofit replacement components for aging turbine control systems with temperature reading drift, channel wire break detection failure.

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