Woodward 2301A 9907-022 Isochronous Speed Controller

Product Description

Overview of the Woodward 9907-022 Speed Control Module

The Woodward 9907-022 is a forward-acting electronic speed controller from the proven 2301A series, designed to regulate speed and load of prime movers such as diesel engines, gas engines, and turbines. It is widely used in mechanical drive and power generation systems where stable speed regulation and reliable load sharing are required.

Although often listed under PLC categories by distributors, the 9907-022 is not a PLC or logic controller. It is a dedicated analog speed control module that interfaces directly with actuators to manage fuel or steam input based on speed feedback.

Speed Control Functionality and Operating Modes

The 9907-022 (2301A) supports both isochronous and droop operating modes. Isochronous mode maintains constant speed regardless of load variation, making it suitable for standalone generator or drive applications. Droop mode enables stable parallel operation and load sharing when multiple units operate on a common bus.

As a forward-acting controller, output increases actuator drive as speed demand increases. This behavior aligns with standard Woodward actuator designs and simplifies tuning in mechanical systems.

Technical Specifications