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Phone：+86 17062388866Description
The WOODWARD 5501-471 is a high-performance, programmable digital control module that forms part of Woodward’s esteemed SPM-D (Single Point MoDal) product family. This specialized controller is engineered to provide precise and reliable governance for a wide array of prime movers, including industrial gas turbines, steam turbines, and medium-speed diesel engines. The core mission of the WOODWARD 5501-471 is to maintain critical operational parameters such as rotational speed, generated frequency, and load sharing by continuously processing feedback from sensors like magnetic pickups and pressure transducers, and then executing advanced control algorithms to adjust actuator drives or fuel valves with pinpoint accuracy. Acting as the dedicated “brain” for the prime mover, the WOODWARD 5501-471 delivers exceptional stability, protects machinery from damaging overspeed conditions, and optimizes fuel efficiency. Its standalone, fully programmable nature makes the WOODWARD 5501-471 an exceptionally versatile solution, ideal for both new system integrations and as a modernization upgrade for existing control systems, offering a powerful blend of flexibility, robustness, and proven performance.
WOODWARD 5501-471
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 5501-471 |
| Manufacturer | WOODWARD |
| Product Type | Programmable Digital Governor Controller |
| Series/Platform | SPM-D (Single Point MoDal) |
| Input Power Supply | 18-32 VDC (Typical) |
| Speed Sensing | Dual Magnetic Pickup (MPU) Inputs (for redundancy/safety) |
| Analog Inputs | Multiple, configurable (e.g., 4-20mA, 0-5/10V) |
| Discrete I/O | Multiple Digital Inputs (for start/stop, etc.) and Outputs (for alarms, relays) |
| Communication Ports | RS-232 / RS-485 (for configuration and SCADA interface) |
| Control Modes | Speed, Frequency, Load, Pressure (Isochronous & Droop) |
| Operating Temperature Range | -40°C to +70°C (-40°F to +158°F) |
| Enclosure | Designed for panel mounting in a protective enclosure |
| Configuration Software | Woodward Toolbox™ |
Main Features and Advantages
The WOODWARD 5501-471 is packed with features that make it a superior choice for critical control applications. Its standout characteristic is advanced programmability, allowing for deep customization of control parameters, PID tuning, and application-specific logic. This enables the WOODWARD 5501-471 to be perfectly matched to the dynamic response of any specific engine or turbine, achieving a level of performance that fixed-gain controllers cannot provide.
Enhanced Reliability and Redundancy: Designed for maximum uptime, the WOODWARD 5501-471 often supports dual magnetic pickup inputs, a critical feature for redundancy in safety-critical systems. Its robust construction ensures reliable operation in the face of extreme temperatures, vibration, and electrical noise commonly found in industrial and power generation environments. This inherent ruggedness translates to long-term stability and reduced maintenance needs.
Precision Control and Advanced Connectivity: The module utilizes high-resolution signal conversion and processing to deliver exceptionally precise and stable control, minimizing speed drift and ensuring smooth operation under transient load conditions. Furthermore, the integrated RS-232/485 communication ports, combined with Woodward’s intuitive Toolbox software, transform the WOODWARD 5501-471 into a smart device. This allows for easy configuration, real-time data monitoring, advanced diagnostics, and historical trending, significantly simplifying commissioning and troubleshooting processes.
Application Field
The WOODWARD 5501-471 is a trusted controller in a multitude of industries where the precise and reliable control of rotational equipment is non-negotiable. In the Power Generation sector, it is extensively used to govern backup diesel gensets and small to medium-sized gas turbines, performing critical functions like isochronous load sharing between multiple units and droop control for grid-parallel operation, ensuring frequency stability and reliable power supply.
Within the Oil & Gas industry, the WOODWARD 5501-471 is a cornerstone for controlling compressor and pump drives in upstream and midstream operations, regulating engine speed to maintain precise pipeline pressure and flow rates. It is also a preferred solution for Marine propulsion control, managing the speed of main engines for ships and offshore vessels. Additionally, the WOODWARD 5501-471 finds application in various Industrial Mechanical Drive scenarios, such as controlling turbines or engines that drive large compressors, fans, and pumps in chemical plants, water treatment facilities, and mining operations. Its versatility and robustness make it suitable for both base-load and peak-shaving applications in distributed energy resources.
WOODWARD 5501-471
Related Products
WOODWARD 5501-381: A closely related model within the same SPM-D series, potentially with variations in I/O configuration or firmware for different application focuses.
WOODWARD 5466-318: Another member of the SPM-D family, often used in similar governing roles, providing alternative options within the product line.
WOODWARD 2301D: A digital speed control and load sharing controller from a different, established Woodward product line, serving as a complementary technology.
WOODWARD ProAct Digital Servo Actuator: A common and direct partner to the 5501-471, translating its control output signals into precise mechanical movement of fuel racks or valves.
WOODWARD EasyGen Genset Control Unit: While the 5501-471 manages the prime mover, the EasyGen series specializes in generator protection, automatic synchronization, and utility interfacing.
WOODWARD Sync-Pro II 3005A: A dedicated automatic synchronizer that can work in concert with the 5501-471 for closing generator breakers at the precise moment.
