Woodward 9907-164 505 Digital Turbine Governor Controller

Woodward 9907-164 is a microprocessor-based 505 series digital governor controller, specially developed for steam turbines and turbo-generator units. It executes high-precision speed control, load regulation and extraction/admission control by driving steam valve actuators.

This controller integrates a local keypad and display for on-site parameter configuration and real-time monitoring. It supports Modbus communication and complete turbine protection logic, widely used as spare parts for maintenance of power generation and petrochemical turbine equipment.

Main Specifications

• Brand: Woodward
• Model: 9907-164
• Product Type: Digital Turbine Governor Controller
• Power Supply: 24 VDC
• Built-in 30-key keypad and LCD operator interface
• Support speed, load, extraction and admission control modes
• Analog 4-20mA I/O and multi-channel discrete signal terminals
• RS232/RS422 communication with Modbus RTU protocol
• Multiple safety protection and first-out fault indication function
• Operating Temperature Range: -20°C ~ +60°C

Core Functions

• Real-time closed-loop speed regulation for steam turbine generator sets
• Control turbine steam valve actuators to adjust power output and load distribution
• Execute automatic startup, shutdown and normal switching sequence logic
• Avoid critical speed zones to prevent mechanical resonance damage
• Collect field sensor signals and exchange data with upper monitoring system
• Record operation events and fault logs for equipment troubleshooting
• Local parameter modification via front panel without external software
• Integrated overspeed, low pressure and interlock protection functions
• Support remote monitoring and configuration through industrial communication bus
• Stable continuous operation to meet long-cycle power plant production requirements

Application Scenarios

• Thermal power plant steam turbine generator control systems
• Waste heat power generation turbine governor racks
• Petrochemical plant steam turbine auxiliary drive units
• Pulp and paper factory turbine speed control equipment
• Oil & gas industry turboexpander control systems
• Sugar plant and chemical industry back-pressure turbine control
• Biomass power generation unit turbine automation control cabinets
• District heating steam turbine parameter monitoring systems
• Overhaul, retrofit and spare parts replacement of 505 turbine control systems
• Woodward turbine control spare parts inventory and field emergency replacement projects