Description

The WOODWARD 5501-381 is a versatile and robust digital control module belonging to Woodward’s highly respected SPM-D (Single Point MoDal) family. It acts as a dedicated, programmable controller designed for the comprehensive management and regulation of prime movers, including gas turbines, steam turbines, and diesel engines. The primary function of the WOODWARD 5501-381 is to accurately control critical parameters such as speed, frequency, load, and pressure. It achieves this by processing input signals from sensors like magnetic pickups and transmitters, executing sophisticated control algorithms, and sending precise output commands to actuators and fuel valves. As a cornerstone of the control system, the WOODWARD 5501-381 provides exceptional operational stability, protects equipment from harmful conditions like overspeed, and optimizes process efficiency. Its standalone design makes the WOODWARD 5501-381 an ideal solution for both standalone applications and as a dedicated controller within larger systems, offering a perfect balance of power, flexibility, and reliability.

WOODWARD 5501-381 S

Technical Specifications

Main Features and Advantages

The WOODWARD 5501-381 is distinguished by its advanced programmability and robust design. A key feature is its flexible configuration, which allows engineers to tailor the control strategy and logic to the exact requirements of the specific engine or turbine, ensuring optimal performance that off-the-shelf controllers cannot match. This programmability extends to its comprehensive I/O structure, enabling the WOODWARD 5501-381 to interface seamlessly with a wide array of field devices.

Reliability in Harsh Environments: Built to withstand the rigors of industrial settings, the WOODWARD 5501-381 operates reliably across an extreme temperature range and is immune to common electrical noise, guaranteeing continuous operation in demanding environments like offshore platforms or remote power plants. Its design prioritizes long-term stability, minimizing drift and the need for recalibration.

Precision and Diagnostic Capabilities: The module delivers highly accurate control through its high-resolution signal processing and advanced control algorithms, maintaining precise setpoints even during rapid load changes. Furthermore, the WOODWARD 5501-381 offers extensive diagnostic and monitoring features. Accessible via the standard RS-232/485 ports with Woodward’s Toolbox software, these features simplify troubleshooting, reduce downtime, and provide valuable insights into the health of both the controller and the prime mover it governs.

Application Field

The WOODWARD 5501-381 is deployed across a broad spectrum of industries where precise and reliable prime mover control is paramount. In the Power Generation sector, it is a trusted controller for gensets, providing isochronous load sharing for multiple units and droop control for grid-parallel operation, ensuring stable frequency and power output. The Oil & Gas industry relies on the WOODWARD 5501-381 to govern compressor and pump drives in pipelines and processing facilities, where it regulates speed to maintain precise pressure and flow control.

It is also extensively used in Marine propulsion systems for controlling main engines and in various Industrial Mechanical Drive applications, such as controlling turbines that drive large fans, pumps, and compressors in chemical plants, water treatment facilities, and manufacturing plants. The versatility of the WOODWARD 5501-381 allows it to be the central control solution for gas turbines in distributed energy resources, providing grid support and black-start capabilities. Its robustness makes it suitable for harsh and remote locations, ensuring dependable performance for critical infrastructure.

WOODWARD 5501-381 S

Related Products

WOODWARD 5466-318: A closely related model within the SPM-D series, often used in similar governing applications with potentially varying I/O counts.

WOODWARD 5501-280: Another variant in the 5501 series, potentially with different firmware or hardware configurations for specific control tasks.

WOODWARD 2301E: A digital speed control and load sharing controller from a different product line, serving as a complementary or alternative solution.

WOODWARD ProAct Digital Servo Actuator: A frequent partner to the 5501-381, directly receiving its control signals to provide precise mechanical actuation for fuel racks or valves.

WOODWARD EasyGen Genset Control Unit: While the 5501-381 focuses on the prime mover, the EasyGen series handles generator protection, synchronization, and utility interfacing.

WOODWARD SPM-A 5017-375: A module from a related SPM series, showcasing the breadth of Woodward’s single-point control portfolio.