Caterpillar 144-5572 | Woodward 9907-028 Synchronizer Module

Woodward 9907-028 SPM-A Synchronizer and 2301A Reverse-Acting Speed Control

The 9907-028 (Part Number: 9907-028), also identified under the Caterpillar cross-reference 144-5572, is a high-precision SPM-A Synchronizer and 2301A series reverse-acting electronic governor. This dual-purpose module is engineered to manage the synchronization and speed regulation of prime movers, including diesel engines, gas engines, and turbines. The 9907-028 (Model: 9907-028) is specifically designed for systems requiring reverse-proportional behavior, where the actuator signal decreases as the speed error increases, ensuring fail-safe operation in specific fuel system architectures.

Operating within the Woodward MicroNet and 2301A ecosystems, the 9907-028 (Synchronizer: 9907-028) provides automatic frequency matching and phase locking between a generator and a busbar. It features an ultra-fast response time of less than 2ms and is built to withstand extreme industrial conditions, including vibrations up to 20g. By integrating automatic load sharing and external droop control, this module maintains grid stability and smooth power transitions in mission-critical power generation and marine propulsion environments.

Detailed Technical Specifications

The 9907-028 (144-5572) provides high-accuracy control with the following technical parameters: