9907-018 Woodward Load Sharing Control for Diesel & Gas Engines

Product Overview

The Woodward 9907-018 belongs to the industry-standard 2301A series of electronic load sharing and speed controls. This specific model provides "Full Authority" control, managing the speed and load of diesel engines, gas engines, or turbines based on process demand or remote 4–20 mA / 1–5 Vdc signals. As a low-voltage, forward-acting unit, it drives a single actuator with a 0–200 mA current range. We offer this unit as 100% Brand New and factory-original, ensuring peak synchronization and frequency stability for parallel generator operations in marine, power gen, and industrial drive applications.

Technical Specifications

The 2301A hardware utilizes analog circuitry for high-speed response and immunity to software-based glitches.

Engineering Advantages

• High-Fidelity Load Sharing: The 9907-018 coordinates multiple prime movers via Woodward load sharing lines. It ensures each generator carries its proportional share of the total load, preventing unit "fighting" and maintaining a stable system frequency.

• Robust Analog Logic: By utilizing analog control loops, this module delivers instantaneous response to load transients. This hardware-level processing excels in environments where digital latency could destabilize the grid.

• Flexible Speed Inputs: The unit accepts high-frequency signals (up to 10,000 Hz) from a Magnetic Pickup (MPU). This allows for precise speed regulation across a wide variety of engine and turbine flywheel tooth counts.

• Extreme Environment Resilience: A wide operating temperature range (–40 °C to +85 °C) ensures the 2301A functions reliably in unheated engine rooms or high-temperature industrial enclosures.

• Manual Tuning Precision: Onboard potentiometers allow for on-site adjustment of Gain, Stability, and Low Speed/Rated Speed settings. This enables engineers to fine-tune the governor's response to the specific inertia and fuel system characteristics of the prime mover.

FAQs

Q: What does "Forward Acting" mean for the 9907-018?

A: In a forward-acting control, the actuator current increases as the speed demand increases. If the control signal is lost, the actuator typically returns to a minimum fuel position, providing an inherent level of safety for the engine.

Q: Can I use this unit on a 110 VAC or 220 VAC power source?

A: No. The 9907-018 is a Low Voltage model designed specifically for 20–40 VDC input. Connecting it to AC mains will cause immediate and irreparable hardware damage. For high-voltage applications, you must use the appropriate high-voltage 2301A variant.

Q: Does this model include a deceleration ramp?

A: No. Unlike some other 2301A variants, the 9907-018 does not feature a built-in deceleration ramp. Speed changes occur according to the gain and stability settings provided during the tuning process.

Q: Is a Magnetic Pickup (MPU) required for operation?

A: Yes. The 9907-018 requires a clean frequency input from an MPU mounted near the flywheel to monitor engine RPM. Without this feedback loop, the controller cannot execute speed regulation or load sharing.