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5461-780 - Gas Final Driver Board is available in stock which ships the same day.
5461-780 - Gas Final Driver Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: 5461-780
Manufacturer: Woodward
Series: NetCon / MicroNet Architecture
Application Type: Gas Final Driver Card
Input Signal: High-speed digital ratio split demand vectors via chassis backplane
Output Type: High-current proportional or pulse-width modulated (PWM) actuator drive
Operating Voltage: 24 VDC Nominal (Power derived via chassis backplane motherboard)
Control Accuracy: ±0.1% of full-scale calibrated valve position
Size: Standard single-slot chassis rack plug-in card configuration
Operating Temperature: -40 °C to +70 °C
Mounting: Chassis rack system guide mount (Vertical slot installation)
Repair: 3-7 days
Availability: In Stock
Weight: Approximately 0.7 kg (1.5 lbs)
Country of Origin: United States
The 5461-780 is a Gas Final Driver Card designed and manufactured by Woodward for high-performance gas turbine governing layouts, operating specifically within legacy NetCon and early MicroNet processing chassis frames. This specialized card serves as the heavy-power execution stage for the gas fuel metering system, taking low-level logical demand directives from upstream controllers and converting them into physical driver currents.
PRECISION ACTUATOR POWER ACTUATION:
While core governor modules or dedicated fuel transfer cards calculate the exact volumetric fuel split required for combustion, their logic circuits lack the amperage needed to move heavy industrial valves. The 5461-780 solves this by bridging the backplane data bus with ruggedized onboard power semiconductors. It translates incoming position commands into high-current outputs that physically stroke the gaseous fuel control valves, ensuring immediate and accurate governor positioning.
ARCHITECTURAL FIELD ISOLATION:
Operating in harsh power generation environments requires comprehensive protection against field wiring faults and line transients. The 5461-780 incorporates optoelectronic isolation barriers that completely separate the sensitive rack-level microprocessing motherboard from the high-load external field lines. If a field coil shorts or grounds out, the onboard protection layers confine the disturbance to the individual driver channel to preserve the core chassis integrity.
WHY BUY FROM WOC:
World of Controls is a specialized global authority in the lifecycle extension of active Woodward and GE industrial control architectures, providing the 5461-780 in both UNUSED and REBUILT conditions to eliminate operational latency. Our legacy quality-assurance protocol involves extensive multi-channel loop testing across precise ratio transfer steps, bumpless transition simulations, backplane bus data validation, and static-safe custom industrial packaging. By partnering with WOC, you secure reliable hardware solutions reinforced by 24/7 technical consultation and accelerated global logistics.
What is Woodward 5461-780?
The 5461-780 is a rack-mounted Gas Final Driver Card used in Woodward NetCon and MicroNet turbine control systems. It acts as the dedicated high-current power execution interface that translates low-level digital position logic into physical current to drive gaseous fuel metering valves.
What is the primary function of the Woodward 5461-780?
The 5461-780 handles final power delivery by taking low-power gas fuel demands from the backplane and generating high-current outputs to stroke the gaseous fuel metering valves. It bridges central processor calculations with physical field hardware to control turbine speed and load.
How does the 5461-780 interface with the 5461-779 Fuel Transfer Card during dual-fuel operations?
The gas final driver card continuously listens to the specific proportional demand vectors calculated and broadcast by the fuel transfer card over the backplane bus. It interprets these real-time ratio targets and adjusts its power transistor outputs to position the gas valve accordingly.
What specific thermodynamic parameters does this driver card optimize within the gas manifold?
The module regulates the volumetric mass flow rate of gaseous fuel by controlling the absolute linear displacement of the metering valve stem assembly. By translating backplane logic into steady current changes, it counteracts line pressure fluctuations inside the gas header manifold. This precise regulation maintains a completely stable fuel-to-air ratio within the combustor cans, directly preventing thermal exhaust spreads and localized flame-outs.
How does the card protect its internal switching circuits from inductive field line feedback?
The board utilizes high-capacity transient voltage suppression networks and protective flyback diodes across its output terminal loops. These hardware layers absorb massive reverse voltage spikes generated when inductive gas actuator coils are rapidly modulated or de-energized. This continuous suppression safeguards the card's internal power field-effect transistors from experiencing dielectric breakdown over years of operation.
Why does a power rail voltage drop on this card trigger an immediate asset trip?
The card features an integrated hardware watchdog circuit tied directly into the system's emergency trip string to prevent unmonitored fuel delivery anomalies. If internal logic power drops below operational thresholds, the watchdog relay automatically unlatches and drops its coil. This physical break in the safety circuit immediately forces all downstream emergency fuel stop valves to close.
