Product Overview

This module is an 8-channel analog output module designed for high-precision current signal output in GE Mark VIe turbine control systems. It supports redundant system architectures, real-time diagnostics, and hot-swap capability, making it ideal for critical control and regulation applications.

Technical Specifications
Output Characteristics

Number of output channels: 8 independent current outputs

Output signal range:

4–20 mA

0–20 mA

Maximum load per channel: ≤ 900 Ω

Performance

Accuracy: ±0.5% (over operating temperature range –30 °C to +65 °C)

Resolution: 16 bits (including output feedback sampling)

Electrical Characteristics

Operating voltage:

24 VDC backplane power supply

Compatible range: 22.8–28 VDC

Typical power consumption: ≤ 5 W

Communication Interfaces

Ethernet: Dual RJ45 ports (IONet)

System interface: Backplane bus

Isolation

Electrical isolation:

Channel-to-channel

Channel-to-backplane

Isolation rating: 1500 VAC

Environmental Conditions

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

Protection level: IP20 (installation inside control cabinet)

Core Features
High-Precision Analog Output

16-bit digital-to-analog conversion combined with real-time output current feedback sampling ensures stable, accurate analog signal generation, suitable for precision control and regulation applications.

Redundancy Support

Fully compatible with Mark VIe dual and triple redundant (TMR) system architectures. The module can operate in redundant configurations with controllers to significantly enhance overall system reliability and availability.

Advanced Diagnostic Functions

Built-in output current monitoring and channel fault detection provide real-time diagnostics. LED indicators clearly display module and channel status, enabling fast fault localization and troubleshooting.

Hot-Swap Capability

Supports live replacement in accordance with system specifications, minimizing maintenance downtime and improving operational continuity.

Industrial Compatibility

Compatible with IS200TBAOH1C and other Mark VIe terminal boards. Supports a wide range of field devices, including actuators, servo valves, and transmitters.

Typical Applications
Gas and Steam Turbine Control Systems

Driving fuel valves

Inlet guide vanes (IGV)

Servo valves and actuators

Closed-loop control of speed, load, and temperature

Generator Set Control

Excitation system adjustment

GE IS220PAOCH1BD｜Analog I/O Module｜

Speed governor control

Stabilization of output voltage and reactive power

Petrochemical and Metallurgical Equipment

Control of compressors, pumps, and other critical rotating equipment

Distributed Control System (DCS) Expansion

Signal conversion and interface node between Mark VIe systems and field simulation or auxiliary control equipment