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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 5000
Product Type: N1 Speed Control / Analog Output Module
Channels: 8 Independent Channels
Output Type: 4–20 mA / 0–200 mA (Software Selectable)
Resolution: 16-bit High-Resolution D/A Conversion
Isolation: 500 VDC Galvanic Isolation
Operating Temperature: -40 °C to +70 °C
Mounting: Chassis / Rack Mounted
Weight: 1.2 kg
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
The 5461-798 N1 Speed Control Module is a critical regulation component within the Woodward MicroNet and NetCon 5000 control architectures. In turbine applications, N1 typically refers to the rotational speed of the low-pressure compressor or the gas generator section. This module is responsible for providing the high-precision analog output signals that drive the actuators governing this speed. By converting digital control algorithms from the Master CPU into stable, real-world current signals, the Speed Control Module ensures that the turbine maintains its optimal aerodynamic and thermal efficiency. Its fast update rate is essential for preventing compressor surges and managing the complex transients associated with rapid load changes in aviation, marine, and power generation sectors.
PRECISION REGULATION AND DYNAMIC RESPONSE:
The Speed Control Module is engineered to handle the demanding requirements of isochronous speed control. Each of its 8 channels is capable of delivering high-resolution output, allowing for minute adjustments to fuel valve positions or stator vane angles. This level of precision is vital for maintaining the N1 speed setpoint within tight tolerances, which directly impacts the engine's thrust or power output. The module features internal feedback loops that monitor the delivered current, automatically compensating for changes in actuator coil resistance due to temperature shifts. This ensures that the N1 speed remains stable regardless of the environmental conditions in the turbine enclosure.
SYSTEM SAFETY AND FAIL-SAFE LOGIC:
Reliability is paramount in N1 speed regulation, as uncontrolled speed excursions can lead to catastrophic mechanical failure. The Speed Control Module incorporates hardware-level Watchdog timers that continuously verify the health of the system bus. Should the communication with the main controller be interrupted, the module is designed to immediately transition to a pre-defined fail-safe state, typically driving the actuator to a minimum-fuel or Safe-Run position. Additionally, the 500 VDC isolation protects the module's internal logic from external voltage spikes and ground loops, ensuring that a field-side fault does not compromise the entire control chassis.
AVAILABILITY AND SUPPORT:
World of Controls maintains a comprehensive inventory of the 5461-798 N1 Speed Control Module in both unused and professionally refurbished conditions. Every module is subjected to rigorous functional verification, including linearity checks and thermal stress testing, to guarantee it meets original factory specifications. We provide a full warranty on all units and offer 24/7 technical support for system integration, PID tuning, and field troubleshooting. Our global logistics network ensures that these mission-critical components are delivered quickly to minimize operational downtime and maintain the safety of your rotating equipment.
What is the Woodward 5461-798?
It is an N1 Speed Control Module (Analog Output) used in MicroNet and NetCon 5000 systems. It provides the high-precision analog signals required to drive actuators that regulate the rotational speed of a turbine's gas generator or low-pressure compressor section.
What is the primary use of the Woodward 5461-798?
This module is primarily used to control the N1 speed loop in gas turbines. It acts as the physical interface that moves fuel valves or actuators based on the governor's speed requirements. It is essential for maintaining stable combustion and preventing overspeed or surge conditions during turbine operation.
How does it differ from a standard analog output module?
While it functions as an analog output, the Speed Control Module is specifically optimized for speed control loops. It offers higher resolution and faster response times than general-purpose I/O, and its firmware is designed to handle the deterministic requirements of Woodward's real-time control architecture.
What happens if the speed control signal is lost?
The 5461-798 features integrated fail-safe logic. If communication with the Master CPU is lost, the module will automatically drive its outputs to a pre-configured safe value (such as minimum fuel). This prevents the turbine from accelerating uncontrollably in the event of a control system failure.
