Control and Processing Core

Built around an Intel-based dedicated microprocessor combined with a programmable signal-conditioning module.

Supports precise scaling, isolation, and conversion of multiple analog signal types, meeting the real-time requirements of closed-loop turbine control.

Key Hardware Components

Six configuration jumper groups for signal type and range selection.

Four 34-pin connectors and two 40-pin connectors for system and field signal interfacing.

Integrated signal isolation modules for noise immunity and fault containment.

Three onboard protective fuses to ensure power and circuit safety.

Supported Signal Types

Inputs:

Thermocouples (Type K / J / T)

Millivolt (mV) signals

±10 V analog signals

4–20 mA current loops

Vibration probe signals

Outputs:

4–20 mA or 0–20 mA analog outputs

8 to 16 configurable output channels, depending on configuration

Interfaces and Status Indication

System Interfaces

JE interface: Communication with the TCQC board for unit and line signal interaction.

3PL connector: Data exchange with the STCA board for writing conditioned signals to the control system.

2PL connector: Power input from the TCPS power supply board.

Status and Diagnostics

Six edge-mounted LED indicators (arranged in two rows of three) for monitoring:

Power status

Communication activity

Signal link integrity

Fault and alarm conditions

Signal type and range are configured using the six sets of jumper blocks, enabling flexible field adaptation.

Physical Characteristics and Power Requirements

Form factor: Standard GE Mark V RST board

Dimensions: Approximately 160 mm × 100 mm × 40 mm

Weight: Approximately 0.8 kg

Power supplies:

+5 VDC (logic and processor regulation)

±15 VDC (analog signal conditioning)

Operating temperature: –40 °C to +70 °C

Isolation rating: 500 VDC withstand between input, output, and power supply circuits

Includes overvoltage and reverse-polarity protection

Core Functions and Typical Applications

Analog Signal Conditioning

Isolates, amplifies, and filters signals from thermocouples, pressure transmitters, LVDTs, vibration probes, and other field devices.

Converts analog signals into stable digital values readable by the CPU, ensuring high-accuracy closed-loop control.

Output Drive and Control

Generates 4–20 mA / 0–20 mA output signals to drive servo valves, actuators, and control elements.

Supports closed-loop regulation functions such as fuel flow control and valve position control.

Signal Isolation and Safety

Fully isolated and independent signal paths prevent fault propagation.

Enhances system reliability and complies with turbine unit control safety design requirements, supporting both control and protection logic.

Typical Applications

GE Mark V gas and steam turbine control systems, specifically in the RST core area.

Commonly used with:

DS200TCEAG1B (Overspeed Protection Board)

DS200TCCAG1B (Analog I/O Expansion Board)

Applied in data acquisition and actuator drive control for parameters such as temperature, pressure, displacement, and vibration.