Woodward 9905-021 9905-068 2301A Load Sharing Speed Control

The Woodward 9905-021 9905-068 2301A Load Sharing Speed Control is a highly reliable electronic load sharing and engine speed control module from Woodward's 2301A series, engineered for precise speed regulation and balanced power distribution in multi‑engine power systems. Designed for industrial, marine, and power generation applications, the 9905-021 9905-068 2301A ensures stable engine performance while coordinating load sharing among parallel units, enhancing system efficiency and avoiding engine overload or under‑utilization.The 9905-021 9905-068 2301A model is reverse‑acting with a 0–200 mA actuator output, enabling precise control of actuator mechanisms without deceleration ramps. Its robust construction and industry‑proven design make it a preferred choice for OEM or retrofit installations in power control, distributed generation, and mission‑critical installations.

Model: 9905-021 9905-068 2301A
Type: Load Sharing Speed Control
Series: Woodward 2301A Load Sharing & Speed Control Series
Manufacturer: Woodward Inc. (USA)
Control Type: Reverse‑acting load sharing and speed control
Power Supply Range: 20–40 V DC (low voltage)
Load Sharing Input: 0–6 V DC
Actuator Output Range: 0–200 mA (single actuator)
Mounting: Panel or enclosure installation (industrial rack)
Typical Operating Voltage: 24 V DC nominal (within supply range)
Control Accuracy: ±0.1 % of rated speed (model dependent)

• Proportional Load Sharing Coordination---The 9905-021 9905-068 2301A is built to balance the electrical load across multiple generator sets, ensuring no single unit is over-taxed while others underperform. By coordinating this distribution, the 9905-021 9905-068 2301A maintains a stable busbar and prevents the mechanical wear associated with uneven power loading.
• Dynamic Speed Regulation---Maintaining a precise engine speed is non-negotiable for system stability. The 9905-021 9905-068 2301A reacts instantly to load swings, commanding the prime mover to stay on frequency even during sudden high-demand starts.
• Reverse-Acting Control Output---Designed for specific governor configurations, the 9905-021 9905-068 2301A features a reverse-acting actuator control. With a 0–200 mA output range, the 9905-021 9905-068 2301A provides the necessary signal for various mechanical and electronic governor mechanisms that require a decreasing signal to increase fuel.
• Rugged Cabinet Integration---Space is often tight in retrofit projects, but the compact form factor of the 9905-021 9905-068 2301A makes it easy to mount in standard control cabinets.

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Q1: What is the Woodward 9905-021 9905-068 2301A Load Sharing Speed Control designed for?
A1: The Woodward 9905-021 is designed to regulate engine speed and balance load sharing among parallel generators or prime mover systems, ensuring efficient power delivery and system stability.
Q2: What type of power supply does the 9905-021 require?
A2: The 9905-021 operates on a 20–40 V DC low‑voltage power supply, often powered by a 24 V DC system in industrial installations.
Q3: Can the 9905-021 handle multiple actuators or just one?
A3: This model supports a single actuator with a 0–200 mA output, suitable for systems with one speed control actuator.
Q4: What load sharing input range does the Woodward 9905-021 support?
A4: The controller provides a 0–6 V DC load sharing input that enables proportional sensing of load demand for synchronized generator control.

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