Selecting control options
Configuration mode selects the options required for the specific extraction or admission arrangement.
WOODWARDINDUSTRIAL TURBINE CONTROL
Woodward 9907-165 505E Digital Governor
505E steam turbine governor · controlled extraction/admission
01
Product Description
Woodward 9907-165 is a 505E digital governor for steam turbines with controlled extraction and/or admission pressure control. It executes the turbine control program that coordinates speed, load and the configured steam-valve demand.
For Woodward 9907-165, the control receives speed, pressure and operating-state information, processes the selected 505E configuration and drives the configured actuator outputs. The front-panel display and keypad provide the local path for setup, service and run-mode observation.
Woodward 9907-165 combines speed, pressure and operating-state inputs with the configured 505E extraction/admission loops. Its actuator outputs carry the resulting valve demand, while the front-panel display and keypad expose the active setpoints and run state.
02
Product Specifications
| Technical Item | 9907-165 |
|---|---|
| Brand | Woodward |
| Product type | 505E digital governor |
| Control family | 505E extraction/admission steam turbine control |
| Power option | HVAC, 180–264 Vac |
| Actuator arrangement | Single or split-range actuator control |
| Control modes | Configuration, Service and Run |
| PID control | Speed/load, auxiliary, auxiliary 2 and cascade loops |
| Operator interface | Graphical display and keypad |
| Communications | RS-232/RS-485 Modbus and Ethernet ports |
| Configuration | Field programmable through menu-driven software |
| Optional enclosure | NEMA 4X bulkhead mounting box 8923-439 |
03
Extraction and Admission Control
Woodward 9907-165 uses a field-programmable 505E configuration to define the turbine control loops and actuator behavior.
Programming the loops
The configured speed/load, auxiliary and cascade relationships determine how demands are calculated.
Protecting configuration access
Configuration and calibration access use the control’s user-level and password boundaries before settings are changed.
04
Operator and Modbus Control
During operation, Woodward 9907-165 presents control values and commands through the operator panel and actuator outputs.
Operating the turbine
Run mode carries the turbine from startup through shutdown using the configured control sequence.
Viewing setpoints
The display and keypad show actual and setpoint values while the control is operating.
Exchanging plant data
Modbus serial and Ethernet paths provide the configured data exchange with a DCS or HMI.
05
Frequently Asked Questions
Which power supply is assigned to Woodward 9907-165?
Woodward 9907-165 uses the HVAC option rated 180–264 Vac. Confirm the nameplate and supply frequency before energizing; do not use the AC/DC or LVDC option values from other 505E part numbers.
How should Woodward 9907-165 be configured for a split-range actuator?
Select the actuator and extraction/admission options in Configuration mode, then verify the resulting output assignments. The control must be configured for the actual turbine arrangement before entering Run mode.
What is the difference between Configuration, Service and Run on Woodward 9907-165?
Configuration selects the turbine options, Service is used for setup and adjustment, and Run is the normal operating state. Check the current mode before interpreting inactive outputs or locked settings.
Can Woodward 9907-165 communicate with a plant DCS?
Yes, through the configured Modbus serial or Ethernet path. Match the port, protocol and address settings on both sides before diagnosing a missing value.
What should be checked when a Woodward 9907-165 output does not follow a setpoint?
Check the selected PID relationship, actuator assignment and active mode in sequence. A display value alone does not confirm that the intended actuator output is configured.
Can the 9907-165 HVAC input be replaced by another 505E power option?
Do not substitute a different power option by appearance. Confirm the complete Woodward part number and supply class before any control replacement decision.
06
Quality & Warranty
MOORE AUTOMATION
https://www.mvme.cn/
Moore Automation applies product and condition checks to the requested Woodward part before the commercial record is completed, with refurbished or surplus status kept distinct from new equipment.
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07
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