Description
The Woodward 9907-164 is a highly specialized and critical electronic control module designed as a key component within Woodward’s renowned governor and control systems, such as the 2301A series. This module functions as an intelligent interface and driver, responsible for translating control signals from the system’s main processor into precise power outputs to manage the actuator or electro-hydraulic converter. The primary role of the Woodward 9907-164 is to ensure the accurate and stable control of speed, load, and other critical parameters for prime movers like gas engines, diesel engines, and steam or gas turbines. Its performance is directly linked to the stability, efficiency, and safety of the entire power generation or mechanical drive system.
Engineered for robustness and reliability, the Woodward 9907-164 is built to withstand the challenging conditions of industrial and power generation environments, including temperature variations, vibration, and electrical noise. It acts as the crucial link in the control loop, ensuring that the actuator responds faithfully to commands to maintain the desired setpoint, whether for base-load operation or for responding to rapid changes in grid frequency. The integrity of the Woodward 9907-164 is paramount; a failure in this module can lead to unstable operation, uncontrolled overspeed, or a complete shutdown, making it a vital spare part for maintaining operational continuity. By utilizing the genuine Woodward 9907-164, operators ensure full compatibility and performance as intended by the original system design.

WOODWARD 9907-164
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | Woodward 9907-164 |
| Manufacturer | Woodward, Inc. |
| Product Type | Electronic Control / Actuator Driver Module |
| Compatible Control System | Woodward 2301A and other governor systems |
| Input Power | Typically 24-48 V DC (system dependent) |
| Primary Function | Actuator Drive / Signal Conditioning |
| I/O Capabilities | Analog and Digital Inputs/Outputs for control and monitoring |
| Communication | Hardwired interfaces with the main controller |
| Operating Temperature | -40°C to +85°C (or as specified for the enclosure) |
| Vibration Resistance | Designed to withstand typical turbine/engine vibrations |
| Certifications | Complies with relevant industrial and safety standards |
Main Features and Advantages
The Woodward 9907-164 is characterized by its precision and reliability in executing critical control commands. It features high-quality signal conditioning that ensures the control signals from the main processor are accurately interpreted and amplified to drive the actuator with minimal latency. This fast and faithful response is essential for maintaining tight control over engine or turbine speed, especially during load transients, thereby preventing instability and protecting the machinery from harmful oscillations. The module’s design incorporates protection against common electrical hazards, including over-current, short-circuits, and reverse polarity, safeguarding both the control system and the final control element.
Durability and ease of integration are key advantages of the Woodward 9907-164. Its components are selected and tested for long-term operation in harsh environments, ensuring a long service life and reducing the risk of unplanned downtime. The module is designed as a direct form-fit-function replacement, allowing for straightforward installation into the existing control panel or rack. Furthermore, the Woodward 9907-164 is supported by Woodward’s global technical expertise and is configured to work seamlessly within the broader control strategy, providing operators with confidence in its performance. Its proven track record in thousands of installations worldwide makes it a trusted component for safeguarding valuable rotating assets.
Application Field
The Woodward 9907-164 finds its primary application in the control and protection of prime movers across various sectors. In the power generation industry, it is essential for governing backup generators, gensets in independent power plants (IPPs), and engines in distributed energy resources. It ensures these units maintain a stable frequency, whether operating in island mode or synchronizing with the grid. The Woodward 9907-164 is also critical in the oil and gas sector, controlling engines and turbines that drive compressors for pipeline transmission and gas processing, as well as pumps on offshore platforms.
In the marine industry, this module is used to govern the speed of main propulsion engines and auxiliary generators on ships, ensuring reliable and efficient vessel operation. Industrial applications include controlling large diesel or gas engines that drive pumps, blowers, and compressors in manufacturing plants, mines, and water treatment facilities. Anywhere precise speed control of a reciprocating engine or turbine is required for safety, efficiency, and equipment longevity, the Woodward 9907-164 plays an indispensable role as a key component of a world-class control system.

WOODWARD 9907-164
Related Products
Woodward 2301A: The primary speed control system that the 9907-164 module is often associated with.
Woodward 9907-165: A commonly related actuator or driver module within the same product family.
Woodward 8273-XXX: A series of electro-hydraulic actuators that are typically driven by modules like the 9907-164.
Woodward 8446-XXX: A speed switch that may be part of the overall protection system working alongside the 9907-164.
Woodward 5466-XXX: A magnetic pickup (proximity sensor) that provides the critical speed feedback signal to the controller using the 9907-164.
Woodward 9905-XXX: A related power supply module that provides stable power to control racks containing the 9907-164.



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