8200-1203 | Woodward LINKnet HT | Analog I/O Module

Overview

The 8200-1203 from Woodward is a hardened LINKnet HT analog I/O module developed for distributed control architectures in turbine and engine applications. It operates as a remote I/O node, acquiring analog field signals and executing output control over a CANopen-based LINKnet HT network. The module is engineered for direct installation in high-temperature, high-vibration zones close to rotating machinery, reducing wiring distances and improving system robustness.

Designed for long-term continuous service, 8200-1203 integrates analog measurement, loop power supply, diagnostics, and network communication in a single compact unit compatible with Woodward digital controllers.

Electrical and I/O Characteristics

The 8200-1203 provides current-loop based analog signal handling suitable for industrial instrumentation and actuator control.

• Analog Inputs
  Eight independent channels supporting 4–20 mA current signals
  Integrated 24 VDC loop excitation for each input
  Suitable for pressure, temperature transmitters, flow meters, and position sensors
• Analog Outputs
  Two channels with 4–20 mA current output
  Intended for valve positioners, I/P converters, and actuator references
• Signal Integrity
  Channel-to-system electrical isolation
  High noise immunity for electrically harsh environments

Communication and System Integration

• Network Protocol
  LINKnet HT (CANopen-based deterministic fieldbus)
• Network Role
  Remote analog I/O node with automatic discovery and initialization
• Supported Functions
  RateGroup execution
  Node diagnostics and health reporting
  Fault detection and status feedback to the controller
• Controller Compatibility
  Woodward MicroNet Plus
  Other Woodward LINKnet HT-enabled turbine and engine controllers

Mechanical and Environmental Design

• Installation
  Sliding-rail mounting system optimized for turbine skids and engine enclosures
• Environmental Rating
  Designed for elevated ambient temperatures
  Resistant to vibration and mechanical shock typical of turbine housings
• Hazardous Area Use
  Approved for Zone 2 installations when installed according to system guidelines
• ​Weight
  2 kg

Configuration and Maintenance

• Configuration Tool
  GAP (Graphical Application Programmer) software
• Maintenance Features
  Network-based diagnostics
  Simplified module replacement without extensive rewiring
  Supports gradual modernization of legacy LINKnet installations

Typical Application Areas

• Gas turbine control and protection systems
• Steam turbine governing systems
• Diesel and gas engine management
• Hydroelectric turbine control panels
• Compressor and rotating equipment control skids

Frequently Asked Questions

Can the 8200-1203 supply loop power to all input channels simultaneously?
Yes. The module provides integrated 24 VDC loop power for all eight analog input channels, eliminating the need for external loop supplies.

Is this module suitable for installation directly on turbine skids?
Yes. It is specifically designed for near-machine mounting in high-temperature and high-vibration environments.

Does the module support legacy LINKnet systems?
The 8200-1203 is commonly used as an upgrade path for older LINKnet installations when migrating to LINKnet HT architectures.