WOODWARD 9905-970 Speed Controller

Woodward 9905-970 Speed Controller (LinkNet / Governor Control Module)

The Woodward 9905-970 is an industrial electronic control module (LinkNet I/O module / governor system component) used in turbine, generator, and engine speed control systems.

 Important: It is NOT a simple “speed knob controller” or VFD. It is part of a full Woodward digital control system used for speed regulation, load control, and engine monitoring.

Key Specifications

• Model: 9905-970
• Brand: Woodward
• Product Type: LinkNet I/O / Control Module (Speed Control System Component)
• System: Woodward 9900 Series / turbine control architecture
• Function:
  • Receives sensor inputs (speed, pressure, load signals)
  • Communicates with main controller/governor system
  • Supports engine speed regulation & load sharing functions
• Input: 24 V DC supply (system dependent)
• Communication: LinkNet / system bus communication
• Installation: Rack-mounted industrial control system
• Application: Generator sets / turbine control systems

What it actually does (simple explanation)

This module does not directly “control motor speed” like a VFD.

Instead:

• It is an I/O interface module
• It sends/receives signals between:
  • sensors (speed, temperature, load)
  • main Woodward controller (governor system)
• The main controller decides the speed

So the real “speed control brain” is separate (Woodward governor), not this module.

Features & Advantages

• Industrial-grade turbine/generator control system module
• Supports multi-channel signal input/output
• High reliability for continuous 24/7 operation
• Used in load sharing and engine synchronization systems
• Designed for harsh environments (power plants / marine / oil & gas)
• Part of modular Woodward automation architecture

Applications

• Generator sets (diesel / gas engines)
• Gas turbines
• Power plants
• Marine propulsion systems
• Oil & gas compressor stations
• Industrial prime mover control systems