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5461-770 - Speed Control Module is available in stock which ships the same day.
5461-770 - Speed Control Module comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: 5461-770
Manufacturer: Woodward
Series: MicroNet / NetCon 5000
Product Type: High-Speed Digital Speed Control Module
Processor: Dedicated 32-bit DSP (Digital Signal Processor)
Input Signal: Dual Magnetic Pickup (MPU) / Proximity Probe
Update Rate: 5 milliseconds (Typical)
Control Modes: Isochronous, Droop, and Baseload
Operating Temperature: -40 °C to +70 °C
Mounting: Chassis / Rack Mounted
Weight: 1.4 kg
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
The 5461-770 Speed Control Module is a high-performance processing unit designed for the Woodward MicroNet and NetCon 5000 platforms. It serves as the primary governor engine, responsible for executing the high-speed PID (Proportional-Integral-Derivative) algorithms required to maintain precise engine or turbine speed. This module takes the real-time RPM data from speed sensors and compares it against the target speed setpoint provided by the reference module. The Control Module then calculates the exact corrective action needed and transmits these commands to the final driver modules. Its ultra-fast processing capability is essential for managing the sudden load changes and frequency transients common in islanded power grids and mechanical drive systems.
DETERMINISTIC CONTROL AND PID TUNING:
The module is built around a dedicated digital signal processor that ensures deterministic control, meaning every calculation is performed within a strict time window to prevent system lag. The Control Module features fully adjustable PID parameters, including Gain, Reset (Integral), and Rate (Derivative), which can be tuned via the MicroNet software to match the specific inertia of the prime mover. This level of customization allows the module to handle everything from small, fast-responding gas engines to large, high-inertia steam turbines with the same degree of stability and precision.
SYSTEM SAFETY AND SPEED SENSING:
Redundancy and safety are integrated into the Control Module hardware. It features dual-channel speed-sensing inputs, allowing it to monitor two independent magnetic pickups simultaneously. This auctioneering logic ensures that if one sensor fails, the module can instantly switch to the healthy signal without interrupting the control loop. Additionally, the board includes hardware-level overspeed protection; if the measured speed exceeds a hard-coded safety limit, the module can trigger an emergency trip signal independently of the main CPU. Front-panel status LEDs provide immediate feedback on the health of the speed signals and the operational state of the PID controller.
AVAILABILITY AND SUPPORT:
World of Controls offers the 5461-770 Speed Control Module in both unused and fully refurbished conditions. Every unit is subjected to rigorous dynamic loop testing, where it is connected to a turbine simulator to verify its response to rapid load swings and frequency deviations. We provide a full warranty on all parts and offer 24/7 technical support for PID tuning, system commissioning, and field troubleshooting. Our global logistics network is optimized for the rapid delivery of these critical governor components to help you maintain a stable and reliable power supply.
What is the Woodward 5461-770?
It is a high-speed Digital Speed Control Module used in MicroNet and NetCon systems. It is the governor of the system, responsible for the actual calculations that keep an engine or turbine running at the correct speed. It processes speed feedback and executes the control logic necessary to maintain system frequency.
What is the primary use of the Woodward 5461-770?
This module is primarily used in gas turbine, steam turbine, and large diesel engine control systems. Its role is to ensure the machinery maintains a stable RPM under varying load conditions. It is the core component for managing isochronous speed control (constant speed) or droop control (speed varying with load).
How does the dual-speed sensing work?
The Control Module has two separate inputs for magnetic pickups (MPU). It typically monitors both and uses a highest-wins or validate logic to determine the actual speed. This provides a layer of redundancy. If one sensor is damaged or disconnected, the module continues to operate using the second signal, preventing an unnecessary system trip.
Can this module be tuned while the engine is running?
Yes, through the Woodward service tool software, technicians can adjust the PID gains on the 5461-770 in real-time. This allows for precise live tuning to optimize the governor's response to the actual mechanical dynamics of the turbine, ensuring the smoothest possible operation and the fastest recovery from load changes.
