1. Basic Information

• Model: DS200TCQCG1BGF

• Brand/Series: General Electric (GE) Speedtronic Mark V Gas/Steam Turbine Control System, DS200 Series RST Analog I/O Expansion Board (TCQA)

• Core Role: Key analog signal conditioning & I/O expansion unit for Mark V system, responsible for acquisition, scaling, isolation, conversion and transmission of multi-type analog signals, serving as a critical interface for turbine control system data acquisition.

• Standard: Designed for Mark V I/O core racks (R1/R2/R3), compatible with TBQA/TBQC/TBQB terminal boards, compliant with GE industrial control standards.

2. Core Hardware & Specifications

• Signal Processing: Supports conditioning and transmission of thermocouple, RTD, 4–20mA, ±10V voltage, LVDT/LVDR position, vibration, pulse, servo-valve drive, relay drive analog I/O signals.

• Power & Electrical: 24VDC power input; on-board hardware jumpers (J1/J2/J5/J6/J7/J8) configurable for 4–20mA output range (20mA/200mA), RS232 test port, oscillator enable, etc.

• Interfaces & Bus:

  • Connectors: 2PL (power), 3PL (COREBUS data bus, connecting STCA/TCQA/TCQE), JA/JB/JD/JE/JF/JG (terminal board signal interfaces for TBQA/TBQC/TBQB).

  • Signal Channels: Multi-channel analog I/O with cold-junction compensation, signal isolation, calibration, signal accuracy ±0.1%.

• Environment & Physical: Operating temperature -40°C~+85°C, conformal coated PCB for EMI resistance and vibration tolerance; standard embedded mounting for Mark V racks.

• Diagnostics: On-board LED status indicators for on-site fault diagnosis, signal monitoring and hardware testing.

3. Core Functions

• Multi-Type Analog Signal Conditioning: Amplifies, filters, isolates, scales and performs cold-junction compensation for field sensor signals (temperature, pressure, flow, position, vibration, speed), converting them to standard signals recognizable by the control system.

• I/O Expansion & Bus Communication: Expands Mark V analog I/O capacity, connects to COREBUS via 3PL bus, interacts with core boards (STCA, TCQC) for data upload and control command download.

• Actuator Drive Output: Outputs servo-valve and relay drive signals to directly control turbine actuators (e.g., control valves, fuel valves).

• Fault Monitoring & Protection: Real-time monitoring of signal anomalies, power failures and communication faults, supporting on-site diagnosis and system alarms to ensure stable control links.

4. Typical Applications

• Field analog signal acquisition and control output for gas turbines, steam turbines and combined-cycle units in power plants.

• Spare replacement, I/O expansion and system upgrade/maintenance for Mark V control systems.

• Analog monitoring and control for industrial processes in oil, gas, petrochemical and power industries.