WOODWARD 8440-1706 A SPM-D11158/LSXR SPM-D11 Series Load distribution synchronizer

SPM-D11.pdf

• Official Product Designation: This unit is a factory-configured assembly, officially designated as SPM-D11158/LSXR. It is built upon the core 8440-1706 A Digital Speed Input Module platform and is designed for integration into the SPM-D11 series control architecture.

• Primary Speed Sensing Function: The module reliably interfaces with two-wire, passive magnetic pickups (MPUs). It conditions the raw sinusoidal signal by amplifying, filtering, and converting it into a clean digital square wave. This processed signal provides the essential speed feedback for the governing system.

• Dedicated Advanced Control Function: The /LSXR configuration firmware enables this module to support critical control algorithms beyond basic speed sensing. It is explicitly designed for Load Distribution (load sharing between parallel generators) and Synchronization (precise matching of generator output to the bus frequency, voltage, and phase angle).

• High Integrity and System Reliability: This module provides the high-integrity signal required for isochronous load control and crossline synchronization. Its design ensures operational stability and prevents circulating currents when generators are operating in parallel.

• Seamless System Integration: As part of the SPM-D11 series, this module ensures full hardware and software compatibility within existing Woodward control panels. It is a direct replacement unit, guaranteeing correct performance and maintaining system certification.