General Description

This analog output terminal board is designed for the GE Mark VIe Speedtronic Turbine and Gas Turbine Control System. It provides high-precision, electrically isolated analog output signals for driving actuators and control devices, supporting demanding turbine speed regulation and process control applications.

Technical Specifications
System Compatibility

Applicable System: GE Mark VIe Speedtronic Turbine / Gas Turbine Control System

Supported Processor Boards: VCRC, VCC, VTUR

Power Supply

Power Input: 24 V DC

Used for onboard logic power only

No onboard solenoid power supply

I/O Configuration

Number of Outputs: 8 independent analog output channels

Supported Output Types:

4–20 mA current output

0–10 V voltage output

Channel Configuration:

Each channel independently configurable

Performance

DAC Resolution: 16-bit

Output Accuracy: ±0.1% of full scale (FS)

Electrical Isolation

Isolation Level:

2.5 kV AC isolation between channels and between field and system circuits

Designed to suppress common-mode interference and ground loops

Connector Configuration

Field Wiring:

Double-sided Euro-style screw terminals

36 terminals per side

Communication Interface:

Processor board communication cable

Environmental Conditions

Operating Temperature: −40 °C to +70 °C

Storage Temperature: −40 °C to +85 °C

Humidity: 5% to 95% RH (non-condensing)

Mechanical Characteristics

Dimensions (W × H × D):
Approx. 159 mm × 178 mm × 50 mm

Mounting Method: Surface-mounted

Weight: Approx. 1.1 kg

Core Features
High-Precision Analog Output

The 16-bit DAC ensures highly accurate output signals, making the board suitable for precision actuator control such as servo valves and regulating valves used in turbine speed control and process regulation.

High-Level Electrical Safety Isolation

The 2.5 kV AC isolation design effectively separates field circuits from control electronics, protecting the system from electrical noise and disturbances in harsh industrial environments.

Flexible Signal Adaptation

Each output channel can be independently configured for 4–20 mA or 0–10 V, allowing seamless adaptation to a wide range of actuators and control circuits.

Visual Fault Diagnostics

Each analog output channel includes an LED status indicator, enabling rapid identification of conditions such as open circuit, short circuit, or overcurrent, thereby reducing troubleshooting time and maintenance downtime.

Seamless System Integration

Fully compatible with VCRC, VCC, and VTUR processor boards, the terminal board integrates smoothly with Mark VIe controllers, supporting turbine control logic and actuator drive requirements.

Typical Applications

Servo valve and regulating valve control in gas and steam turbine systems

High-precision actuator drive in turbine speed and load regulation

Analog output expansion for Mark VIe control cabinets

Industrial process control requiring isolated, high-accuracy analog outputs