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5461-776 - Acceleration Schedule Board is available in stock which ships the same day.
5461-776 - Acceleration Schedule Board comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: 5461-776
Manufacturer: Woodward
Series: MicroNet / NetCon 5000
Product Type: Acceleration Schedule Control Board
Control Loops: Dedicated Acceleration & Speed Scheduling
Input Interface: Analog and Pulse-width Modulated (PWM)
Output Signal: High-precision Actuator Control Signals
Operating Temperature: -40 �C to +70 �C
Mounting: Chassis / Rack Mounted
Weight: 1.1 kg
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
The 5461-776 Acceleration Schedule Board is a specialized control module designed for Woodward MicroNet and NetCon 5000 systems. Its primary function is to manage the critical acceleration phase of a turbine or engine, ensuring that the transition from startup to operational speed follows a precise, pre-defined schedule. This board calculates the optimal rate of fuel increase or steam flow based on real-time feedback, preventing thermal stress or mechanical surges during the ramp-up process. By maintaining a strict acceleration curve, the Schedule Board protects the long-term integrity of the prime mover and ensures consistent, repeatable startups in power generation and mechanical drive applications.
PRECISION SCHEDULING AND RAMP CONTROL:
The module features dedicated circuitry for high-speed calculation of acceleration limits. It monitors variables such as compressor discharge pressure, exhaust temperature, and current RPM to adjust the schedule dynamically. This prevents the engine from flaming out due to lean conditions or suffering from over-temperature spikes during rapid load changes. The board's logic is tuned to provide smooth, bumpless transitions between different control modes, ensuring that the transition from start-up scheduling to isochronous speed control is handled without system oscillations.
SYSTEM INTEGRATION AND RELIABILITY:
As a core component of the Woodward 5400 series, the Schedule Board interfaces seamlessly with the Master CPU via the system backplane. It is built with industrial-grade components designed to resist the high-vibration environments typical of turbine enclosures. The board includes onboard diagnostic features that monitor signal integrity and board health, providing immediate alerts if the acceleration feedback loop is compromised. Its aluminum faceplate and robust thermal design allow it to operate reliably in high-ambient temperature environments without the need for external cooling fans.
AVAILABILITY AND SUPPORT:
World of Controls offers the Acceleration Schedule Board in both unused and fully refurbished conditions. Each board undergoes rigorous functional verification, including simulated ramp-up testing, to ensure it meets original Woodward performance specifications. We provide a comprehensive warranty and 24/7 technical support for installation, calibration, and troubleshooting. Our global supply chain ensures that this critical control component is available for immediate dispatch to minimize downtime during scheduled outages or emergency repairs.
What is the Woodward 5461-776?
It is an Acceleration Schedule Board used in MicroNet and NetCon 5000 control systems. It is responsible for controlling the rate at which an engine or turbine increases speed during its startup sequence. This board ensures that the acceleration follows a specific safety and performance curve to protect the machinery from damage.
What is the primary use of the Woodward 5461-776?
This module is primarily used in gas and steam turbine control systems to manage the fuel or steam flow during the acceleration phase. Strictly following a pre-set acceleration schedule, it prevents issues like compressor surges, over-temperature conditions, and excessive mechanical stress. It acts as a safety layer that manages the transition from a standstill to synchronized speed.
How does the board handle different engine conditions?
The Schedule Board uses real-time sensor data to dynamically adjust the acceleration rate. If temperatures or pressures deviate from safe parameters, the board can clamp or slow the acceleration schedule to ensure the engine remains within its design limits. This intelligence is vital for maintaining reliable operation across varying ambient conditions and load requirements.
Can I swap this board while the system is live?
While Woodward MicroNet chassis often support modularity, it is highly recommended to follow specific system manual procedures regarding the 5461-776. Because this board directly impacts the fuel and speed control loops, replacing it typically requires the system to be in a safe state to prevent accidental trips or uncontrolled speed changes. Always consult with a qualified technician before attempting a replacement.
