Analog Input I/O Module

GE Mark VIe Control System

1. General Description

The Analog Input I/O Module is designed to acquire, isolate, and condition analog signals from field sensors and transmit them to the Mark VIe controller via the redundant IONet network.
It supports high-reliability operation, channel-level diagnostics, and seamless maintenance, making it suitable for critical gas and steam turbine control applications.

2. Electrical Specifications

Supply voltage: 28 VDC (powered from I/O terminal board)

Power distribution: Backplane-supplied through terminal board

Isolation:

Channel-to-channel isolation

Channel/system-to-ground isolation

High immunity to electrical interference

3. Diagnostic and Status Functions

Built-in diagnostics for:

Open circuit

Short circuit

Over-range conditions

Per-channel LED indicators for real-time status and fault identification

Continuous self-monitoring to ensure signal integrity

4. Environmental and Mechanical Characteristics

Operating temperature: −30 ℃ to +65 ℃

Protective coating:

Conformal coating

Moisture-proof

Anti-pollution and corrosion resistant

Protection class: IP20 (cabinet installation)

5. Mechanical Specifications

Weight: approx. 0.36 kg

Dimensions: approx. 8.2 cm × 12.2 cm × 6 cm

6. Terminal Board Compatibility

Compatible with the following terminal boards:

TCAS

TCAT

TBCA

TBCC

7. Installation and Maintenance

Hot-swappable design:

Supports online replacement without system shutdown

Electrically heated replacement design ensures stability in low-temperature environments

LED indicators enable rapid fault localization, significantly reducing maintenance time and downtime

8. Key Features and Functions

Acquisition of analog signals from field instruments, including:

Temperature

Pressure

Flow

Vibration

Signal isolation and conditioning before transmission

Data upload to the controller via redundant IONet, supporting closed-loop control of:

Gas turbine speed

Load control

Exhaust temperature and other critical parameters

Channel-level diagnostics ensure high signal reliability and availability

9. Redundancy and System Architecture

Supports dual-channel terminal boards for I/O redundancy

Fully compatible with TMR (Triple Modular Redundancy) system architecture

Suitable for high-availability and high-security control scenarios

Redundant IONet network eliminates single points of failure in data transmission

10. Typical Applications

Gas turbine and steam turbine control systems

Power generation and combined-cycle plants

High-reliability industrial automation systems

Critical process control requiring continuous operation and fast fault detection

GE IS230PCAAH1A｜Analog Input I/O Pack｜