Woodward 9907-167 505E Digital Governor

The Woodward 9907-167 belongs to the 505E series, a microprocessor-based digital governor specially designed for steam and gas turbines. It collects turbine speed signals and executes PID control algorithms to regulate actuators, realizing precise speed, load and extraction pressure control for turbogenerator sets.

This panel-mounted controller integrates an LCD display and keypad for local parameter configuration and status monitoring. It supports Modbus communication and built-in turbine protection functions, widely used as spare parts for power plant and petrochemical turbine control system maintenance and retrofitting.

Main Specifications

• Brand: Woodward; Model: 9907-167; Type: 505E Turbine Digital Governor
• Applicable Equipment: Steam turbine, gas turbine, turbogenerator and turboexpander
• Core Tasks: Speed regulation, load sharing, extraction pressure control, overspeed protection, data communication
• Signal Interface: Speed input, actuator output, relay contact, Modbus communication port
• Installation: Front panel mounting for control cabinet
• Power Supply: 18–36 VDC, supports stable power supply in industrial field
• Operating Environment: -25℃ ~ +65℃, 5%–95% RH non-condensing, industrial anti-vibration grade
• Certifications: CE, complies with industrial automation EMC and safety standards

Core Functions

• Adopt 32-bit microprocessor to implement high-precision closed-loop control of turbine speed, load and extraction pressure.
• Provide complete safety protection including overspeed, overcurrent and fault alarm to guarantee safe turbine operation.
• Equipped with local display and keyboard, supporting on-site parameter setting, real-time data viewing and fault record query.
• Support Modbus communication protocol to realize data interaction with DCS and HMI for remote monitoring.
• Support single or dual actuator control modes to match different steam valve driving structures of turbines.
• Industrial-grade hardware with conformal coating ensures long-term stable operation in harsh power and chemical plant environments.

Application Scenarios

• Spare-part replacement for 505E turbine control cabinets in power, petrochemical and cogeneration industrial sites.
• Digital speed regulation hardware for steam turbines, gas turbines and small turbogenerator control systems.
• Maintenance backup inventory for renovation and after-sales maintenance projects of legacy Woodward turbine control equipment.
• Matching governor cooperating with turbine actuators, field sensors and upper monitoring DCS systems.
• Retrofit replacement for aged governors with control deviation, communication failure and protection malfunction faults.

• Global aftermarket spare supply for automation maintenance teams maintaining Woodward turbine control equipment worldwide.