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5461-798 - N1 Speed Control Module is available in stock which ships the same day.
5461-798 - N1 Speed Control Module comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS
Part Number: 5461-798
Manufacturer: Woodward
Series: MicroNet / NetCon Series
Product Type: N1 Speed Control Module
Functional Group: Turbomachinery Speed Regulation & Sensing
Signal Processing: High-Speed Speed Sensor / MPU Frequency Processing
Control Backplane: VMEbus Architecture
Isolation: Optical Channel Isolation
Form Factor: VME Plug-In Card
Conformal Coating: Yes
System Compatibility: MicroNet & NetCon Turbine Control Platforms
Availability: In Stock
Repair Lead Time: 3–7 Days
Country of Origin: United States
The 5461-798 is an N1 Speed Control Module manufactured by Woodward for MicroNet and NetCon turbomachinery control systems. Slotted directly into standard VME chassis slots, the module provides high-speed processing of N1 shaft rotation frequency signals from magnetic pickups (MPUs) or proximity probes to deliver precise speed governing and overspeed protection.
HIGH-SPEED N1 FREQUENCY ACQUISITION & GOVERNING:
The primary function of the 5461-798 is monitoring and regulating primary shaft rotation speed (N1) in gas turbines, steam turbines, and industrial engines. The module processes raw high-frequency AC pulse trains generated by speed sensors mounted on the target gear teeth, converting time-period counts into high-resolution speed values. It executes low-latency control logic, comparing actual N1 rotational speed against target setpoints to calculate precise fuel demand signals.
SIGNAL CONDITIONING & OVERSPEED SAFEGUARDING:
To ensure reliable speed detection in electrically noisy turbomachinery environments, each input channel incorporates hardware noise filtering and optical isolation to suppress electromagnetic interference (EMI). The onboard processing logic continuously tracks speed signal continuity, tooth-pass timing, and acceleration rates, automatically flagging sensor loss, wire breaks, or trip conditions across the backplane to prevent engine overspeed events.
WHY BUY FROM WOC
World of Controls maintains the industry's largest inventory of genuine OEM replacement components exclusively for Woodward control systems and turbomachinery governors. To minimize critical plant downtime, we provide unused surplus and fully rebuilt circuit boards, field terminal modules, and driver cards, each backed by comprehensive warranty protection. Every reconditioned component, including the Woodward 5461-798, undergoes rigorous multi-point inspection, terminal continuity verification, and functional bench-testing by our experienced technical team before dispatch. In addition to direct parts supply, our facility offers complete diagnostic repair and unit exchange services with rapid turnaround times for your damaged Woodward hardware. Our dedicated team of automation specialists is available 24/7 to assist with technical selection, live stock verification, and emergency component sourcing for your control panels. Contact us today via phone or email to request pricing, confirm inventory, or arrange fast worldwide shipping.
What is the Woodward 5461-798?
The Woodward 5461-798 is an N1 Speed Control Module designed for MicroNet and NetCon turbomachinery control systems. It processes speed signals from magnetic pickup units (MPUs) or compatible speed sensors to determine N1 shaft rotational speed. The module supports high-speed speed monitoring and control functions within a VME-based control architecture.
How does the 5461-798 process N1 speed signals?
The module receives pulse-frequency signals generated by a speed sensor as the turbine or engine shaft rotates. It measures the frequency or period of these pulses and converts the signal into a corresponding rotational-speed value for use by the turbine control system. The processed speed information can then be used for governing, monitoring, and protective control functions.
What type of speed sensors can be used with the 5461-798?
The 5461-798 is intended for high-speed rotational sensing applications using frequency-generating speed sensors such as magnetic pickups (MPUs). The actual sensor type, signal characteristics, wiring, and allowable input range should be verified against the applicable MicroNet or NetCon system documentation before installation.
What is N1 speed in a turbomachinery control system?
N1 generally refers to the rotational speed of the primary or low-pressure shaft, depending on the turbine or engine configuration. Accurate N1 measurement allows the control system to monitor shaft speed and use that information in governing and protective functions. The exact definition of N1 varies with the specific turbine architecture.
