WOODWARD 9907-167 Digital Governor Controller

 

 

Product Overview

The Woodward 9907-167 is a 505E Digital Governor Controller used for steam turbine and industrial rotating equipment control. It is designed to precisely regulate turbine speed, load, and process variables such as extraction or admission steam pressure.

It is widely used in power generation and heavy industrial energy systems, where stable and safe turbine control is critical.

Key Specifications

• Brand: Woodward
• Model: 9907-167
• Series: 505E Digital Governor
• Type: Steam Turbine Digital Controller / Governor
• Power Supply: 18–32 V DC (LVDC version)
• Speed Inputs: 2× MPU (magnetic pickup sensors)
• Analog Inputs: 4× 4–20 mA programmable channels
• Discrete Inputs: ~12 channels (24 V DC)
• Analog Outputs: 2–4 channels (4–20 mA, configurable)
• Discrete Outputs: Relay outputs for trip / control functions
• Communication: Ethernet + serial (Modbus supported in many configurations)
• Control Function: PID-based turbine speed & load regulation

Advantages & Features

• High-precision steam turbine speed control
• Advanced PID algorithms for stable load regulation
• Supports extraction and admission steam control
• Fast real-time response for industrial turbines
• Built-in protection logic for turbine safety
• Suitable for both standalone and plant-wide DCS integration

Applications

• Steam turbine generator sets
• Power plants (thermal / combined cycle)
• Industrial cogeneration systems
• Compressor and pump turbine drives
• Refinery and petrochemical energy systems
• District heating turbine systems

Precautions

• Installation must be done by qualified turbine control engineers
• Incorrect tuning may cause turbine instability or trip
• Requires correct MPU speed sensor installation
• Must follow OEM turbine safety and shutdown logic
• Proper grounding and shielding required for analog signals
• Configuration should be done using Woodward service software/tools