Multifunction Analog / Servo I/O Module

GE Mark VIe Control System

1. General Description

The Multifunction Analog / Servo I/O Module is a high-performance I/O interface for the GE Mark VIe control platform.
When used with the TCAT terminal board, it provides precise acquisition and control of multiple signal types required for gas turbine and industrial turbine closed-loop control, combining measurement, excitation, pulse processing, and servo actuation in a single redundant module.

2. Supported Signal Types

Thermocouples: J / K / T (and other standard types)

Current inputs: 4–20 mA, 0–20 mA

Voltage inputs: ±5 V, ±10 V

LVDT:

Excitation output

Differential input for displacement measurement

Pulse rate input (speed / frequency measurement)

Servo coil output (actuator control)

3. Performance Characteristics

A/D resolution: 16 bits

High-accuracy signal acquisition and conditioning

Suitable for precision measurement and control loops

4. Communication Interface

Dual redundant IONet Ethernet ports

Fault-tolerant data transmission with no single point of failure

Fully compatible with Mark VIe redundant system architecture

5. Electrical Specifications

Supply voltage: 28 VDC (powered from terminal board)

Power consumption: approx. 8 W (typical)

6. Redundancy and Reliability

Supports TMR (Triple Modular Redundancy)

Fully compatible with system fault-tolerant architecture

Designed for high-availability and mission-critical applications

7. Diagnostics and Maintenance

Channel-level diagnostics, including:

Open circuit detection

Short circuit detection

Over-range detection

Per-channel LED indicators for status and fault identification

Hot-swappable design:

Supports live replacement without system shutdown

Minimizes maintenance time and operational risk

8. Environmental Protection

Operating temperature: −30 ℃ to +65 ℃

Conformal coating:

Moisture-proof

Anti-pollution and anti-fouling

Designed for harsh industrial environments

9. Mechanical and Connector Interface

Backplane connectors:

P1 / P2, 68-pin interface (connected to TCAT terminal board)

Network interface:

Dual RJ45 IONet Ethernet ports

10. Key Functions

Acquisition of turbine core parameters:

Temperature

Pressure

Displacement

Speed

LVDT excitation and input for high-precision linear displacement measurement of turbine components

Pulse rate input for rotational speed monitoring

Servo coil output for precise control of mechanical actuators

Fully supports closed-loop control of complex power equipment

11. Typical Applications

Distributed control of gas turbine combined-cycle power plants

Control and monitoring of large compressors

Industrial turbine and rotating machinery control systems

Applications requiring:

Multiple analog signal types

Integrated measurement and actuation

High-reliability redundant architecture

GE IS230PCAAH1B｜Analog Input I/O Module｜