9907-022 Woodward 2301A Speed Control Module Forward Acting

Product Overview

The Woodward 9907-022 2301A provides precise analog speed regulation and load sharing for diesel engines, gas engines, and steam turbines. This low-voltage, forward-acting control module manages prime movers in power generation and marine propulsion systems. We supply this unit as 100% brand new and original, ensuring maximum performance for critical synchronization and load-balancing tasks.

Technical Specifications

Engineering Advantages

Seamless Forward-Acting Control

The 9907-022 utilizes a forward-acting logic where an increase in fuel demand correlates directly with an increase in actuator current. This hardware configuration suits standard proportional actuators, providing immediate and predictable throttle response during startup and load transitions.

Analog Signal Stability

Unlike digital units that require complex software mapping, the 2301A series uses high-quality analog circuitry to provide continuous, real-time speed regulation. This eliminates "stepping" issues and processing latency, ensuring a smooth frequency output for sensitive electronic loads.

Flexible Load Management

This module supports both Isochronous (zero droop) operation for isolated grids and Droop operation for paralleling with multiple units or a utility utility. The onboard load-sharing lines allow multiple 2301A controls to communicate directly, balancing the kW load proportionally across all running generator sets.

Rugged Low-Voltage Architecture

Designed for 24VDC battery systems common in industrial environments, the 9907-022 handles voltage fluctuations from 18 to 32 VDC without losing signal integrity. Its compact chassis fits into standard control cabinets, while the wide temperature rating (–40 °C to +70 °C) allows for deployment in extreme climates.

FAQs

What is the difference between "Forward Acting" and "Reverse Acting" in the 2301A series?

Forward-acting units like the 9907-022 increase the output current to the actuator to increase fuel flow. Reverse-acting units decrease current to increase fuel. You must match the control type to your specific actuator and linkage fail-safe requirements to prevent engine overspeed or shutdown failure.

How do I calibrate the speed range for my engine?

The 9907-022 features a "Rated Speed" potentiometer. You adjust this during commissioning while monitoring the frequency output. For accurate sensing, ensure your magnetic pickup (MPU) detects a gear with between 1 and 60 teeth and stays within the 1 Hz to 10 kHz range.

Does this unit require an external power supply for the load sharing lines?

No, the 2301A generates its own load-sharing signal. When paralleling units, you connect the load-sharing lines (plus to plus, minus to minus) between all 2301A controllers. This allows the modules to share a common voltage reference representing the total system load.

Can I replace a discontinued 9907-022 with a digital 2301D?

While a 2301D can often perform the same functions, it requires completely different wiring and software configuration. The 9907-022 remains the preferred "drop-in" solution for operators who wish to maintain existing analog wiring and avoid the complexity of digital PID tuning.