The Woodward 9907-247 Rev E is a specialized 828 Digital Control system designed for the precise management of reciprocating engines. As a core component of industrial power management, this digital governor provides sophisticated speed control and load-sharing capabilities. The “Rev E” designation signifies the latest hardware refinements, ensuring high-speed processing and enhanced electromagnetic compatibility (EMC) for harsh industrial environments. It is primarily used to interface with actuators to maintain constant engine speed under varying load conditions.
Product Datasheet & Technical Parameters
The 9907-247 is engineered for durability and high-fidelity signal processing.
| Parameter | Specification Details |
| Model Number | 9907-247 |
| Revision | Rev E |
| Input Power | 18–40 VDC (24 VDC Nominal) |
| Speed Sensing | Magnetic Pickup (MPU) or Proximity Switch |
| Actuator Output | 0–200 mA (Configurable for various Woodward actuators) |
| Discrete Inputs | Rated Speed, Idle/Rated, Close to Run |
| Operating Temp | -40°C to +70°C |
| Communication | RS-232 Port for PC-based Configuration |
| Humidity Range | 5% to 95% Non-condensing |
Technical Description
The Woodward 828 Digital Control utilizes advanced PID control algorithms to minimize speed deviations during transient load changes. The unit features internal surge protection and filtered inputs to prevent electrical noise from disrupting engine synchronization. The 9907-247 model specifically supports complex droop or isochronous load sharing, allowing multiple generator sets to operate in parallel with high stability. Its digital architecture allows for field-programmable parameters via Woodward’s proprietary service tools.
Country of Origin
This control module is manufactured in the United States (USA), meeting global standards for industrial automation and engine safety.
Application Fields
The 828 Digital Control is widely deployed in the following sectors:
- Marine Power: Main propulsion and auxiliary generator control for commercial vessels.
- Distributed Energy: Diesel and gas engine management for microgrids.
- Oil & Gas: Control for gas-driven compressors and pumps in remote stations.
- Emergency Backup: High-speed response governing for hospital and data center standby power.
Product Usage Instructions
- Installation: Secure the chassis to a flat surface within a protective enclosure. Ensure adequate grounding to the sub-panel to prevent signal interference.
- Input Wiring: Connect the MPU sensor to the designated terminals; ensure the cable is twisted-pair and shielded.
- Power Up: Apply 24 VDC power and verify the “Status” LED indicator is solid, indicating the CPU is operational.
- Software Setup: Connect a PC to the RS-232 port to configure the “Rated Speed” and “Fuel Limits” specific to your engine’s technical manual.
- Tuning: Adjust the Gain, Reset, and Actuator Compensation settings while the engine is running to achieve optimal stability and response time.
For further technical support and procurement of industrial automation modules, visit www.dcsplcsystem.com.



