SPECIFICATIONS
Part Number: 5461-771
Manufacturer: Woodward
Product type: Speed Reference Module
Country of Manufacture: United States (USA)
Functional Description
5461-771 is a Speed Reference Module module developed by Woodward. This product has been discontinued by Manufacturer from the production. It processes input data from sensors monitoring speed, load, and other operational variables, generating an output signal to adjust the steam flow or fuel input to maintain the desired speed. This helps ensure stable operation, optimize efficiency, and prevent issues such as overspeed. Often integrated into a broader Distributed Control System (DCS), the Speed Reference Module also includes safety features to alert operators to any discrepancies, ensuring reliable and efficient turbine performance.
Features
- Speed Sensor receives inputs from MPU (Magnetic Pickup Units) and proximity probes. These inputs are used to calculate and provide an accurate speed reading, which is then sent to the application program for processing. This allows the control system to continuously monitor the speed of machinery, engines, or other rotating systems.
- If desired, a derivative output is provided via the application software. This output can be used to assess changes in speed over time, enabling more advanced control strategies or predictive maintenance solutions.
- The inputs from the speed sensors are filtered through an Analog Combo module. This filtering helps smooth out any noise or erratic behavior from the speed sensors, ensuring reliable and stable readings.
- The speed range parameter of the module determines the maximum speed the system can detect. The software control output is configured to detect speeds as low as one-fiftieth of the maximum speed range. This feature is crucial for applications where the system needs to operate at low speeds without missing any crucial updates or causing overspeed conditions. The monitor output from the GAP block is capable of reading down to 0.5 Hz, regardless of the speed range, ensuring that even very low-speed operations can be monitored effectively.
- The module has built-in fail-detection features. It can detect failed speed sensors, which helps prevent dangerous overspeed conditions, especially when dealing with slow-speed applications that might have slower update rates. This added safeguard helps maintain system integrity and ensures that the control system responds quickly to potential sensor failures.
- The module is flexible in terms of the types of inputs it can accommodate. It can be configured to work with various combinations of MPU and proximity probes, allowing the user to customize the system to suit their specific application. Additionally, the module supports different speed ranges, which allows for a wide variety of applications across different types of machinery.
- It combines accurate sensor input handling, customizable filtering, speed detection, and fail detection to provide a comprehensive solution for control systems. While it has been discontinued, its features remain highly relevant in legacy systems, providing valuable functionality for a range of industrial applications.
WOC is happy to assist you with any of your Woodward requirements. Please Contact WOC by phone or email for pricing and availability on any parts and repairs.
Frequently Asked Questions
What is 5461-771?
It is a Speed Reference Module module developed by Woodward.
What types of speed sensors can the module work with?
The module is compatible with MPU (Magnetic Pickup Units) and proximity probes. These sensors can be configured to work together depending on the specific application requirements.
What is the purpose of the filter time constant in the module?
The module offers two selectable filter time constants 8 milliseconds and 16 milliseconds. The filter ensures that the speed readings are stable by removing noise or irregularities from the sensors.
