Tag: Woodward

The Woodward BUM60 (manufactured under the Baumüller partnership) and the 3522-1004 represent a sophisticated motor drive and control assembly.

1 Specifically, the BUM60 is a high-performance modular servo drive often integrated into Woodward’s turbine or engine control systems to provide precise electronic actuation for fuel valves or steam racks.2

Introduction

The BUM60-1224… is a “back-of-panel” modular servo inverter, while the 3522-1004 is often the associated control module or firmware-specific hardware designation.

Together, they form a closed-loop system capable of controlling synchronous or asynchronous motors with high dynamic response.

This specific configuration (indicated by the long alphanumeric string) defines the power stage, control type (VC – Vector Control), and specialized cooling or communication options.

Technical Parameter Table

Parameter	Specification
Model Number	BUM60-1224-54-B-001-VC-A0… / 3522-1004
Input Voltage	400–480 VAC, 3-Phase
Current Rating	12A (Nominal) / 24A (Peak)
Control Method	VC (Vector Control) for high precision
Power Output	Approximately 8–10 kW (Application dependent)
Communication	CANopen / RS-485 (VC interface)
Protection Class	IP20 (Cabinet Installation)
Cooling	Forced Air (Internal fan)
Feedback Types	Resolver / Encoder / SinCos

Related Models

In a Woodward/Baumüller ecosystem, this unit often interfaces with:

F-Series Actuators: High-speed electric actuators for gas/steam valves.

BUS60 Series: Power supply modules for DC bus linking.

BUM62 Series: Larger power variants for higher torque applications.

Woodward 505/MicroNet: The primary turbine controllers that send commands to this drive.

BUM60

Application Cases

Electric Actuation for Large Valves: Replacing pneumatic or hydraulic systems on gas turbines for faster, more precise fuel metering.3

Steam Turbine Needle Control: Managing the position of steam admission valves in power plants.

Variable Speed Pump Drives: Controlling cooling or lubricating oil pumps in heavy industrial skids.

Compressor Guide Vanes: Precise positioning of inlet guide vanes (IGV) to optimize compressor efficiency.

BUM60

Product Advantages and Features

Extreme Precision (VC Mode): The Vector Control (VC) capability allows for maximum torque even at zero speed, which is critical for holding valve positions against high pressure.

Modular Design: The “BUM” series allows for the separation of the power stage and the control unit, making maintenance and troubleshooting simpler.

High Dynamic Response: Capable of millisecond-level response times, ensuring the turbine can react instantly to load changes or emergency trips.4

Integrated Safety: Features built-in monitoring for overcurrent, overvoltage, and thermal protection to prevent damage to the motor or the drive itself.5

Specialized Woodward Firmware: The long part number identifies specific Woodward-tailored parameters that optimize the drive for turbine-specific actuators.

Other Models in the Same Series

The BUM60 series is highly customizable based on the suffix code:

BUM60-0306: Smallest power variant (3A/6A).

BUM60-3060: Larger power variant (30A/60A).

BUM60-VC: Vector Control specific variant (like yours).

BUM60-SR: Resolver-based feedback variant.

5466-258

Woodward 5466-258 Simplex 48/24 Discrete Input/Output Module for Both MicroNet and Vertex-Pro Chassis.

This unit has 1 Red Fault LED and is UL/ATEX Listed. The 5466-258 unit is part of the Vertex-Pro system for MicroNet Digital Controllers.

5466-258 Technical Specifications

Air Quality    Pollution Degree 2

Control Type    Vertex-Pro Motor-Driven Compressor

Installation Overvoltage Rating    Category II

Listings    IL, ATEX, CE(EMC), DNV, ABS, and LRS

Module Type    Simplex Discrete 48/24 I/O Module

Operating Temperature Range    0-55°C

Storage Temperature    -40 to +105 °F

Weight    48 lbs. (22 kg) when in Chassis

About the 5466-258

The 5466-258 module is a Simplex Discrete Input/Output unit. The unit was produced by Woodward as part of the MicroNet Digital Control series which can also be used with a Vertex-Pro Chassis.

The typical hardware used with this unit is the MicroNet Plus hardware.

This module can be used in both Simplex and Redundant systems.

This module can be used in any chassis module, whether eight or fourteen slots.

Please note the locations for this unit must be non-hazardous or within Class I, Division 2. Groups A, B, C, and D.

The 5466-258 module is a forty-eight/twenty-four discrete combo module, this indicates that there are forty-eight inputs and twenty-four outputs.

There are two configurations that the module can be used in. One of them will consist of two twenty-four/twelve discrete FTMs which will connect to this module through two high-density discrete/analog cables.

The discrete inputs on this module will be optically isolated and can be accessed through the twenty-four/twelve FTMs when in the second configuration.

On the front faceplate, there is only one LED which indicates the potential faults. There are also two connectors on the module.

Woodward 9907-1200 Current-to-Pressure Converter (CPC-II)

The Woodward 9907-1200. also known as the CPC-II Current-to-Pressure Converter, serves as a sophisticated electrohydraulic valve control unit used within turbine and engine management systems.

It is designed to convert an electrical input current into a hydraulic pressure output, which actuates steam turbine valves with high precision.

Positioned as a key component in turbine speed and load control loops, the module enables enhanced dynamics and robust performance in complex control architectures.

9907-1200

For system adaptability, the 9907-1200 includes a manual override function allowing local adjustment of output pressure, alongside remote configuration and calibration via a service tool.

It features an eleven-point linearization table to compensate for non-linear valve flow characteristics and a silt buster function to periodically flush potential contaminant buildup, both optimizing turbine control and longevity.

Its robust operating temperature range (-40°C to +85°C) and IP66 ingress protection ensure functionality in challenging environmental conditions, while the compact form factor and flexible mounting options facilitate straightforward integration into control panels.

Detailed Technical Specifications

Parameter    Value

Model    9907-1200

Brand    Woodward

Product Type    Current-to-Pressure Converter (CPC-II)

Pressure Range    0 to 10 bar (0 to 145 psi)

Input Signal    4 to 20 mA (configurable)

Output Signal    Electrohydraulic pressure control

Operating Temperature    -40 to +85 °C

Power Supply    18 to 32 V DC, nominal 24 V DC

Max Current Output    8 Amps

Mounting    Face mounting with threaded holes

Protection Rating    IP66

Redundancy Support    Yes (dual input/controller capable)

Dimensions (approx.)    290 x 270 x 270 mm

Weight    Approximately 25 kg

Related Modules or Compatible Units

9907-1100 – Similar current-to-pressure converter supporting different pressure ranges for varied turbine applications.

9907-055 – Electrohydraulic actuator controller designed for integration with Woodward control systems.

9907-072 – Enhanced valve servo control module with additional redundancy features.

9907-076 – Complementary control module providing advanced diagnostics and feedback capabilities.

9907-077 – Compact electrohydraulic valve control module for smaller scale engine applications.

9907-105 – Current-to-pressure converter variant optimized for higher pressure applications.

8200-1302

Woodward Series 505D Digital Governor Turbine Control Product 8200-1302 is an integrated graphical front panel HMI that features Marine/ATEX Compliance LVDC (18-32 Vdc).

8200-1302 Technical Specifications

Analog Input    4-20 mA channels (with Loop Power)

EMC Immunity    EN 61000-6-2

Enclosure Type    IACS UR E10 (Commercial Marine)

Features    ATEX, IP-54. and Pollution Degree 3

Input Voltage    LV 18-36 VDC isolated

Operating Temperature    -22 – 158 F

Screen Size    8.4in LCD

Storage Temperature    -22 – 158 F

About the 8200-1302

The 8200-1302 is one of several Woodward 505 Digital Governors available for the control of steam turbines.

This operator control panel acts as a graphical interface and keypad that allows for adjustments to and communication with the turbine. This can be configured through Modbus communication ports located on the unit.

The 8200-1302 has multiple features available:

Auto start sequencing for hot and cold starts, with temperature input options

Critical speed avoidance on three-speed bands

Ten external alarm inputs

Ten external DI trip inputs

Trip indication for Trip and Alarm events with associated RTC time stamp

Dual Speed and Load Dynamics

Peak Speed Indication for Overspeed Trip

Zero Speed Detection

Remote droop

Frequency dead-band

The unit also offers three normal operating modes, including configuration, operation, and calibration modes.

The unit includes two redundant speed inputs that can accept magnetic pickup units, eddy current probes, or proximity probes.

It has analog inputs (8) that can be configured for any of twenty-seven functions.

The unit also has an additional twenty contact inputs.

The first four of these contacts default for shutdown raise speed setpoint, reset, and lower speed set point.

The others can be configured as needed. Additionally, the unit has two 4-20 mA control outputs and eight Form-C relay contact outputs.

The 8200-1302’s front panel includes an emergency trip key, a backspace/delete key, a shift key, as well as view, mode, ESC, and home keys.

It also has navigation cross keys, soft key commands, and four LEDs to relate the status of control and hardware.

the Woodward 8901-457 is a high-precision Current-to-Pressure (I/P) Transducer, specifically designed for industrial turbine and engine control applications.

It acts as the critical interface between electronic control systems and pneumatic actuators, converting a standard electrical signal into a proportional pneumatic output to position valves or fuel racks.

Technical Parameter Table

Parameter	Specification
Model Number	8901-457
Input Signal	4–20 mA (Standard)
Output Pressure Range	3–15 psi (0.2–1.0 bar)
Supply Pressure	20 psi (1.4 bar) recommended; Max 50 psi
Accuracy	< ±0.5% of span
Linearity	< ±1.0% of span
Air Consumption	< 0.11 SCFM at 20 psi supply
Operating Temperature	-40°C to +85°C
Enclosure Rating	NEMA 4X / IP65
Weight	Approximately 1.1 kg (2.4 lbs)

Related Models

The 8901-457 is often utilized alongside these Woodward components:

8200-1300: 505 Series Digital Governor (provides the 4-20mA control signal).1

9907-162: 505 Turbine Controller.2

ProTech-GII: Overspeed protection systems that may trigger the I/P transducer for emergency shutdown.3

CPC II: Current-to-Pressure Converter (a more modern, high-precision electronic alternative).

Application Cases

Steam Turbine Control: Regulating the position of the steam governor valve to maintain constant speed or load.

Gas Turbine Fuel Systems: Controlling the fuel metering valves through pneumatic actuation.

Process Industry Valves: Used in refineries and chemical plants to control large-scale pneumatic control valves where electrical-only actuators are impractical.

Boiler Feedwater Systems: Managing the modulation of feedwater valves based on boiler demand.

8901-457

Product Advantages and Features

Explosion-Proof Design: Certified for use in hazardous areas (Class I, Div 1), making it ideal for oil and gas environments.

Vibration Resistance: Specifically engineered to be mounted directly on or near high-vibration equipment like turbines and engines.

High Flow Capacity: Delivers high pneumatic flow rates, allowing for faster response times in large actuators.

Low Air Consumption: Optimized internal pilot valves minimize the amount of compressed air wasted during steady-state operation.

Field Adjustable: Includes zero and span adjustments that are easily accessible for calibration during commissioning.

8901-457

Other Models in the Same Series

The Woodward 8900/8901 family includes various pressure and signal configurations:

8901-456: Variant with 6–30 psi output range.

8901-458: High-pressure output variant for heavy-duty actuators.

8901-460: Model with internal pressure feedback for enhanced stability.

8910 Series: Low-cost variants for non-hazardous locations.

Introduction

The Woodward 8901-457 is a rugged, field-proven I/P transducer that bridges the gap between digital control logic and mechanical execution.

By translating a 4-20 mA current signal into a highly accurate 3-15 psi pneumatic signal, it allows sophisticated electronic governors to control heavy pneumatic machinery with extreme precision.

Its NEMA 4X housing and vibration-dampened internals ensure a long service life even when exposed to the corrosive and turbulent atmospheres of power plants and refineries.

5501-465

Woodward MicroNet Simplex Power Supply Board 5501-465 operates on an input voltage of 24 VDC,

the board will have a holdup time of five milliseconds. When redundant power supplies are used the 5501-465 board will occupy three slots

5501-465 Technical Specifications

Nominal Voltage Range    20 to 32 VDC

Storage Temperature    –40 to +105 °C

Standards    CSA, CE (LVD), CE (EMC), ABS, DNV, LRS

Operating Range    18 to 36 VDC

Chassis    MicroNet Simplex

Max. Power    531 W

Max. Current    2.95 A

Input Power Fuse/Breaker Rating    50 A Time Delay

About the 5501-465

5501-465

Model 5501-465 is another power supply board, but is specifically designed as a MicroNet Simplex model for the digital control series.

There are specific time delays and wire sizes required when operating the board at a specific input voltage range.

The input voltage range for this board is eighteen to thirty-two volts of direct current, the maximum fuse/c.b rating or the time delay will be fifty amperes; the wire size needed is ten millimeters squared or eight American wire gauge.

Please advise that the wires used must be rated for a minimum of one-hundred sixty-seven degrees Fahrenheit for use at an ambient temperature of ninety-five degrees Fahrenheit.

The 5501-465 board has four LEDs which are, an OK, a power supply fault, an input fault, and an overtemperature LED.

There are some troubleshooting checks that can be performed, one potential error that can occur is the voltages are not correct;

to ensure that the voltages are correct be sure that the provided power supply is in the correct range.

SPM-D10 Series

One Breaker Synchronizer

APPLICATIONS

SPM-D10 Series

One Breaker Synchronizer

DESCRIPTION

The SPM-D10 is a microprocessor-based synchronizer

designed for use on three phase AC generators equipped

with Woodward or other compatible speed controls and

automatic voltage regulators. The SPM-D10 synchronizer

provides automatic frequency, phase and voltage matching

using either analog- or discrete output bias signals.

The HJV Package provides additional mains protection.

Part-No. 8440-1668 SPM-D1040B/XN is a direct

replacement of the SPM-A synchronizer.

DESCRIPTION

Synchronizing

• Phase match or slip frequency synchronization with

voltage matching

Protection ANSI

HJV Packages

• Three-phase sensing of mains voltage

• Mains over-/undervoltage

• Mains over-/underfrequency

• Mains phase/vector shift

Control outputs

Standard

• Discrete raise/lower for speed

• Discrete raise/lower for voltage

X & XN Packages

(59/27)

(81O/U)

(78)

• Analog bias outputs for voltage and speed

freely configurable for all levels (+/-1 V,  +/

3 V, 0 to 5 V, 0.5 to 4.5 V, +/-10 V +/-5 V, 0

to 20 mA, +/-20 mA, and much more

configurable)

5448-890 SPM-D10

• Two-phase sensing of generator and bus

• Selectable operating modes like SPM-A (Run, Check,

Permissive, and OFF)

• Synchro-check possible

• Synchronization time monitoring

Isolated operation

• Frequency control

• Voltage control

Dead bus operation

• Closing of CB on demand

• Speed bias output configurable as 500 Hz

PWM output with  adjustable voltage level

• Two raise/lower outputs configurable for either

speed or voltage

Operating Features

• Two-line Liquid Crystal display for operation

and alarm indication

• Synchroscope

• Indication of control activity and breaker state

• Multi-level password protection for parameters

• Configuration directly or via PC

• English or German language adjustable

FURTHER SPM-D SYNCHRONIZERS

• The SPM-D10/YB Series provides three-phase generator and bus measurement

refer to product specifications 37298 for more information

• The SPM-D11 Series provides load/var sharing

refer to product specifications 37292 for more information

• The SPM-D21 Series provides synchronizing for two circuit breakers and load control

refer to product specifications 37293 for more information

SPECIFICATIONS (for more see specific manuals)

5448-890 SPM-D10

Accuracy………………………………………………………………………………Class 1

Power supply……………………………………………[Standard] 24 Vdc (+/-25 %)

[N & XN Packages] 90 to 250 Vac/dc

Intrinsic consumption…………………………………………………………max. 10 W

Ambient temperature……………………………………………………….-20 to 70 °C

[N & XN Packages] -20 to 60 °C

Ambient humidity………………………………………………95 %, non-condensing

Voltage………………..Rated /Δ: [1] 66/115 Vac or [4] 230/400 Vac

Maximum value (Vmax): [1] 150 Vac or [4] 300 Vac

Rated voltage Vph-ground: [1] 150 Vac or [4] 300 Vac

Rated surge voltage: [1] 2.5 kV or [4] 4.0 kV

Measuring frequency………………………………………………………..40 to 70 Hz

Linear measuring range up to……………………………………………….1.3×Vrated

Input resistance………………………………………….[1] 0.21 MΩ, [4] 0.696 MΩ

Max. power consumption per path…………………………………………< 0.15 W

Discrete inputs…………………………………………………………………… isolated

Input range…………………………………………………………..max. 250 Vac or dc

Input resistance……………………………………………………………approx. 68 kΩ

Relay outputs…………………………………………………………………….. isolated

Contact material…………………………………………………………………….AgCdO

Load (GP)…………………………………………………………….2.00 Aac@250 Vac

2.00 Adc@24 Vdc / 0.36 Adc@125 Vdc / 0.18 Adc@250 Vdc

Pilot duty (PD)………………………………………………………………………………….

1.00 Adc@24 Vdc / 0.22 Adc@125 Vdc / 0.10 Adc@250 Vdc

Housing………………………………………………Type APRANORM DIN 43 700

Dimensions……………………………………………………………..144×72×122 mm

Front cutout……………………………………………………138[+1.0]×67[+0.7] mm

Connection…………………………………………screw/plug terminals depending

on connector 1.5 mm² or 2.5 mm²

Front………………………………………………………………………insulating surface

Protection system…………………………………………..with correct installation

Front………………………………..

The Woodward 5437-1067A is a high-reliability individual module for the ProTech-GII series.

It is a critical component of Woodward’s Safety Integrity Level 3 (SIL-3) overspeed protection system, specifically designed to monitor and protect steam, gas, and hydro turbines from catastrophic overspeed or over-acceleration events.

Technical Parameter Table

Parameter	Specification
Model Number	5437-1067A
Series	ProTech-GII
Device Type	Individual Safety Module (for TMR architectures)
Voltage Input	High Voltage/Low Voltage (HV/LV) Voted
Response Time	8 to 26 milliseconds (Total system response)
Speed Input Type	Active or Passive Magnetic Pickups (MPU) / Proximity
Speed Range	0.5 to 32,000 RPM
Enclosure Rating	IP56 (Dust and Water Protected)
Communications	Modbus RS-485 / PCT Service Tool Interface
Safety Certification	IEC 61508 SIL-3 Certified

Related Models

The 5437-1067A is typically part of a triple-modular redundant (TMR) system:

8237-1246 / 8237-1369: The main bulkhead or panel-mount assemblies this module fits into.

5437-1078 / 5437-1119: Alternate spare modules with different relay or voltage configurations.

9927-1180: ProTech-GII Service Tool (software for configuration).

Application Cases

Nuclear & Fossil Power Plants: Used as the primary safety barrier for large-scale steam turbines to prevent runaway scenarios.

Mechanical Drive Turbines: Protecting turbines that drive compressors in oil refineries and gas processing plants.

Hydroelectric Dams: Managing the synchronization and emergency shutdown of water turbines.

Marine Propulsion: Installed on naval and commercial vessels to ensure engine safety in high-vibration maritime environments.

5437-1067A

Product Advantages and Features

Triple Modular Redundancy (TMR): Operates in a 2-out-of-3 (2oo3) voting logic. This ensures that a single module failure will not cause a nuisance trip or a failure to trip.

On-Line Repair: The modular design allows a single module (like the 5437-1067A) to be replaced while the turbine is running, significantly reducing plant downtime.

Acceleration Protection: Unlike basic overspeed trips, it calculates the rate of speed change (acceleration) to predict and prevent overspeed before it happens.

Integrated Logging: Maintains internal logs for the last 50 trips/alarms and 20 overspeed events with high-resolution timestamps.

Ruggedized Construction: Features sulfur-resistant conformal coating, making it suitable for Class 3C2 corrosive environments.

5437-1067A

Other Models in the Same Series

The ProTech-GII family is distinguished by its mounting and output types:

Bulkhead Mount Series: Designed for wall or skid mounting (e.g., 8237-1246).

Panel Mount Series: Designed for flush-mounting within a control cabinet (e.g., 8237-1600).

Voted Relay vs. Independent Relay: Depending on the model, the relays are either pre-voted internally or output independently to an external safety PLC.

English Introduction

The Woodward 5437-1067A is a specialized module for the ProTech-GII overspeed safety system.

It serves as a high-precision, microprocessor-based monitor that interfaces directly with magnetic speed sensors.

By utilizing 2-out-of-3 voting, the 5437-1067A provides the highest level of system availability and reliability, meeting global SIL-3 safety standards.

Its ability to be “hot-swapped” during operation and its advanced diagnostics make it a gold standard for protecting multi-million dollar rotating assets in the energy and processing industries

The Woodward 8440-1706 (SPM-D11) is a high-precision digital synchronizer designed for three-phase AC generators.

Part of the well-known SPM-D series, this “Synchronizer and Power Manager” is specifically engineered to automate the process of bringing a generator online by matching its frequency, voltage, and phase angle to a busbar or another power source.1

Technical Parameter Table

Parameter	Specification
Model Number	8440-1706 (SPM-D11)
Measuring Voltage	100/120 VAC or 400 VAC (Configurable)
Operating Frequency	50/60 Hz (Nominal)
Power Supply	18–32 VDC
Phase Angle Range	Adjustable ±1° to ±30°
Frequency Window	±0.05 Hz to ±0.5 Hz
Relay Outputs	Frequency/Voltage bias (+/-) and CB Close command
Interface	Two-line liquid crystal display (LCD)
Protection Rating	Front Panel IP54
Operating Temp	-20°C to +70°C

Related Models

The SPM-D11 is often paired with or replaced by these related components:

8440-1705 (SPM-D10): A similar synchronizer but typically used for single-phase sensing or simplified applications.

easYgen-3000 Series: More advanced power management controllers that incorporate the synchronizing functions of the SPM-D11.2

8440-1002 (SPM-D10/YB): A variant with specialized voltage/frequency bias characteristics.

LS-5 Series: Circuit breaker controllers often used in conjunction with synchronizers for complex busbar management.

Application Cases

Standby Generator Sets: Automatically synchronizing a backup generator to a building’s busbar during a power transition.

Co-generation Plants: Ensuring a seamless connection between onsite turbine generators and the public utility grid.

Marine Power Systems: Synchronizing multiple shipboard diesel generators to share the electrical load without interruption.

Mobile Power Modules: Used in rental power units where fast, reliable synchronization is required for varying grid conditions.

8440-1706 A SPM-D11

Product Advantages and Features

Full Three-Phase Sensing: Unlike single-phase units, the SPM-D11 monitors all three phases of both the generator and the bus, providing superior safety and accuracy.

Integrated Check-Sync: Includes an internal “Slip Window” and “Dwell Time” logic to ensure the breaker only closes when the electrical conditions are perfect, preventing mechanical damage to the generator.

Analog & Discrete Bias: Capable of sending ±10V or 4-20mA signals to speed governors and voltage regulators (AVRs) to force the generator into alignment.3

Microprocessor Precision: Digitally calculates the exact moment to send the “Close” signal to the breaker, accounting for the inherent mechanical delay of the circuit breaker itself.

User-Friendly HMI: The front-facing LCD and push-buttons allow for easy commissioning without the absolute need for a laptop in the field.

8440-1706 A SPM-D11

Other Models in the Same Series

The SPM-D (Synchronizer Power Manager – Digital) family includes:

SPM-D10: Standard synchronizer (basic version).4

SPM-D11/LSX: Synchronizer with added load-sharing and export control capabilities.5

SPM-D21: A more advanced version designed for two-breaker control (e.g., generator breaker and tie breaker).6

8440-1431: A specific variant of the SPM-D11 series with custom firmware for specialized utility requirements.

Introduction

The Woodward 8440-1706 (SPM-D11) is a robust, microprocessor-based synchronizer that eliminates the human error associated with manual generator paralleling.

7 By continuously monitoring the voltage and frequency of both the generator and the utility bus, it issues corrective commands to the engine’s governor and voltage regulator.

Once the generator is perfectly “in phase,” the SPM-D11 triggers the circuit breaker, ensuring a smooth transition of power.

It is highly valued for its reliability in critical infrastructure where even a minor synchronization error could result in significant equipment damage.

Woodward 5466-425 Fuel Metering Valve (FMV) Actuator
Parameter Name
Parameter Value
Product Model
Woodward 5466-425
Manufacturer
Woodward
Product Type
Fuel Metering Valve (FMV) / Actuator
Actuator Type
Electro-Hydraulic Servo Valve (EHSV) or Direct Drive Motor (DDV)
Input Signal
Typically ±10 VDC or 4-20 mA from the turbine controller
Position Feedback
LVDT (Linear Variable Differential Transformer) or RVDT (Rotary Variable Differential Transformer) for closed-loop control
Pressure Rating
Designed for high fuel inlet pressures (e.g., 500-1500 psig, specific to application)
Flow Capacity
Sized for the specific turbine’s fuel flow requirements
Linearity & Hysteresis
High precision (e.g., <0.5% full scale)
Response Time
Fast, capable of responding to rapid load demands
Materials
Stainless steel, high-strength alloys compatible with fuel (natural gas, diesel)
Operating Temperature
-40°C to +120°C (or higher, depending on installation)
Connections
SAE or NPT ports for fuel inlet and outlet; electrical connector

Technical Specifications

Parameter Name	Parameter Value
Product Model	Woodward 5466-425
Manufacturer	Woodward
Product Type	Fuel Metering Valve (FMV) / Actuator
Actuator Type	Electro-Hydraulic Servo Valve (EHSV) or Direct Drive Motor (DDV)
Input Signal	Typically ±10 VDC or 4-20 mA from the turbine controller
Position Feedback	LVDT (Linear Variable Differential Transformer) or RVDT (Rotary Variable Differential Transformer) for closed-loop control
Pressure Rating	Designed for high fuel inlet pressures (e.g., 500-1500 psig, specific to application)
Flow Capacity	Sized for the specific turbine’s fuel flow requirements
Linearity & Hysteresis	High precision (e.g., <0.5% full scale)
Response Time	Fast, capable of responding to rapid load demands
Materials	Stainless steel, high-strength alloys compatible with fuel (natural gas, diesel)
Operating Temperature	-40°C to +120°C (or higher, depending on installation)
Connections	SAE or NPT ports for fuel inlet and outlet; electrical connector

The Woodward 5466-425​ delivers critical performance through its closed-loop servo control system.

The core of its operation involves comparing the valve’s actual position (measured by the integrated LVDT/RVDT) to the desired position commanded by the turbine controller.

Any difference (error) between these two signals is amplified and used to drive the actuator—either by porting hydraulic fluid to a piston (in an electro-hydraulic design) or by turning a motor (in a direct drive design).

This continuous correction ensures the valve spool or poppet is positioned with extreme accuracy, resulting in precise fuel flow metering