Description
WOODWARD
828
DIGITAL CONTROL UNIT
P/N: 9907-247
REV: B
MAX. AMBIENT: 70℃
18-40 VDC, 40 WATTS
MAX OPERATING TEMPERATURE CODE T4A
The Woodward 828 Digital Control Unit (P/N 9907-247, Rev B) is a precision electronic controller designed for governing and control applications in demanding marine environments. Operating within a 18–40 VDC input range at 40 watts, and rated for a maximum ambient temperature of 70℃ with temperature code T4A, this unit is built to deliver reliable digital control functionality across a range of onboard machinery systems. As a key component within the Marine Control System category, it plays a critical role in maintaining accurate speed, load, or process control — ensuring stable and safe vessel operations.
Key Features
✓ Digital control architecture providing stable and responsive governing performance for marine machinery applications.
✓ Rated 18–40 VDC input at 40 watts maximum power consumption, with a maximum ambient operating temperature of 70℃ and temperature classification code T4A.
✓ Compatible with Woodward 828 series control architectures; system integration and panel compatibility subject to confirmation based on vessel configuration.
✓ Suitable for installation in protected onboard control spaces; mounting location and environmental enclosure requirements depend on specific installation context.
✓ Identified as Revision B, indicating a defined hardware baseline — important for like-for-like replacement and maintaining control system integrity during servicing.
Marine Applications
✓ Engine speed governing and load control on commercial cargo vessels, tankers, and bulk carriers.
✓ Auxiliary machinery control systems aboard offshore support vessels and platform supply vessels.
✓ Diesel-electric propulsion control integration on ferries and ro-ro passenger vessels.
✓ Generator set control and power management support systems on large merchant vessels.
✓ Industrial marine applications including dredgers, tugs, and heavy lift vessels requiring precise process control.
Why Marine Engineers Choose
Marine engineers specify the Woodward 828 Digital Control Unit for its proven digital governing performance, clearly defined hardware revision for accurate spares management, and its ability to operate reliably within the elevated temperature conditions common to engine room environments.
Ideal For
Cargo vessels, tankers, offshore support vessels, ferries, tugs, dredgers, and any commercial or industrial vessel operating Woodward-based engine or machinery control systems.
Technical Support
Technical support is available for the Woodward 828 Digital Control Unit, covering onboard installation guidance, system integration, and remote troubleshooting assistance. Support can also be provided for repair assessment and control system fault diagnosis.




