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Product Description
The Woodward 9905-068 from the 2301A controller family is an electronic load-sharing and engine speed regulation module designed for generator sets and industrial engines operating in parallel configurations. The controller manages engine speed with high stability while simultaneously balancing electrical load between multiple generators.
Designed for demanding industrial environments, 9905-068 operates on a wide DC supply range and supports magnetic pickup speed sensing, enabling precise frequency control for synchronous power generation systems. Its rugged electronic design allows reliable performance in extreme temperatures commonly encountered in marine, offshore, and power-generation installations.
The controller integrates speed governing functions with load sharing logic, allowing multiple engines or generator sets to operate together without manual adjustment. By continuously monitoring engine speed and adjusting fuel control signals, the module maintains system stability during load transitions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 9905-068 |
| Manufacturer | Woodward |
| Product Series | 2301A Electronic Controls |
| Product Type | Load Sharing and Speed Control Module |
| Power Supply | 20–40 VDC |
| Maximum Power Consumption | ≤ 15 W |
| Speed Sensor Input | Magnetic Pickup |
| Speed Sensor Input Impedance | 100–300 Ω |
| Operating Temperature | −40 °C to +85 °C |
| Dimensions | 387 × 181 × 64 mm |
| Weight | 1.8 kg |
Key Functional Characteristics
Electronic Load Sharing
The controller distributes active load evenly among parallel generator sets, helping prevent overload conditions and ensuring optimal generator utilization.
Accurate Engine Speed Regulation
The system maintains constant engine speed by processing signals from magnetic pickup sensors and adjusting actuator outputs in real time.
Wide Temperature Tolerance
Operational capability from −40 °C to +85 °C allows installation in outdoor power stations, marine engine rooms, and remote industrial facilities.
Industrial-Grade Reliability
Built with robust electronic components and certified under CSA safety standards, the module is intended for long-term operation in critical power control systems.
Typical Application Scenarios
Power generation plants operating multiple generator sets in parallel
Diesel or gas engine generator packages
Marine propulsion and onboard auxiliary power systems
Industrial standby power systems
Utility and distributed generation installations
FAQ
What is the main function of the 9905-068 controller?
The module regulates engine speed and automatically balances load between generators operating in parallel.
What type of speed sensor is supported?
The controller is designed for magnetic pickup speed sensors with an input impedance between 100 and 300 ohms.
Is the controller suitable for harsh environments?
Yes. The unit operates from −40 °C to +85 °C and is engineered for industrial installations including marine and offshore environments.
Can the controller be used with multiple generators?
Yes. The 2301A series is specifically designed for load sharing between multiple generator sets operating on the same bus.
