Description
Woodward 9907-164 505 Digital Governor
The Woodward 9907-164 is a 505 series digital governor, a microprocessor-based turbine controller built for steam turbines fitted with single or split-range actuators. Woodward 9907-164 delivers precision speed control, load control and cascade control for turbine generator sets, widely deployed in thermal power plants, CHP cogeneration, oil & gas and industrial steam systems. Woodward 9907-164 supports extraction and admission turbine control functions, capable of driving single or dual turbine actuators to regulate steam inlet valves.
The Woodward 9907-164 505 digital governor comes with a built-in 2-line × 24 character LCD display and 30-function membrane keypad. Operators can directly configure parameters, view real-time operating data, check fault alarms and perform turbine startup/shutdown locally on the unit. Woodward 9907-164 integrates RS-232 communication port, compatible with Woodward 505View configuration software for remote setup, data logging and system diagnostics. It includes built-in critical speed avoidance, valve limiter, overspeed protection logic and self-diagnostic functions to improve turbine safety during operation.
Key Features of Woodward 9907-164
Model: Woodward 9907-164, 505 Digital Governor for Steam Turbine
For single or split-range actuator steam turbines, extraction & admission control support
Multi control modes: speed control, load control, cascade control, isochronous mode
Onboard 2-line × 24 character LCD display + 30 multi-function keypad
RS-232 communication interface, works with 505View software for configuration & monitoring
Built-in critical speed avoidance, valve position limiter, overspeed protection
Integrated self-diagnosis & event logging for fault troubleshooting
Panel mount design, front panel IP56 protection rating
Rugged industrial design, stable performance in power plant environments
Support field parameter modification without extra programming device

Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 9907-164 |
| Product Name | 505 Digital Governor / Turbine Controller |
| Brand | Woodward |
| Applicable Equipment | Steam Turbine (single or split-range actuators) |
| Power Supply | 24 VDC, 1A |
| Display | 2-line × 24 character LCD |
| Operation Panel | 30 multi-function membrane keypad |
| Communication | RS-232 port, support 505View software |
| Protection Grade | Front Panel IP56 |
| Operating Temperature | -20℃ ~ +60℃ (-4℉ ~ +140℉) |
| Storage Temperature | -40℃ ~ +85℃ (-40℉ ~ +185℉) |
| Humidity | 5%–95% RH, non-condensing |
| Mounting | Cabinet Panel Mount |
| Main Control Functions | Speed control, load control, cascade control, extraction/admission control, overspeed protection |
| Supported Software | Woodward 505View |
| Certification | CE, UL |
Application Scenarios
Steam turbine generator sets in thermal power station
CHP combined heat and power plant
Industrial steam turbine system
Oil & gas industry turbine & compressor control
Turboexpander control
Power plant turbine automation retrofit project
Package & Warranty
Package: Anti-static foam + heavy export carton
Condition: New / Refurbished available
Warranty: 12 months warranty
Delivery: Fast worldwide shipping










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