The WOODWARD 9907-029 functions as a compact engine control module, specializing in regulating speed and fuel delivery for small-scale diesel engines and generators. Positioned as a streamlined alternative to larger control units, it connects directly to engine sensors (monitoring RPM, temperature, and fuel pressure) and actuators (such as fuel injectors or throttle valves), translating real-time data into precise control actions.
Model Number9907-029
Brand Woodward
Type Compact Engine Control Module
Input Voltage 12-24 V DC
Operating Temp Range -30°C to +65°C
Mounting Style DIN rail or panel mount (low-profile)
Dimensions 95 mm x 65 mm x 35 mm
Weight 180 g
Interface/Bus RS-485 (Modbus RTU)
Compliance CE, UL 1604
Supported Protocols Modbus RTU (primary)
Typical Power Draw 2.2 W
The WOODWARD 9907-029 functions as a compact engine control module, specializing in regulating speed and fuel delivery for small-scale diesel engines and generators. Positioned as a streamlined alternative to larger control units, it connects directly to engine sensors (monitoring RPM, temperature, and fuel pressure) and actuators (such as fuel injectors or throttle valves), translating real-time data into precise control actions.
9907-029
Unlike its larger counterpart, the WOODWARD 9907-028, this module omits unnecessary I/O expansion features to prioritize a smaller footprint, making it ideal for tight enclosures. It interfaces with supervisory systems via a simplified RS-485 bus, supporting Modbus RTU for straightforward data exchange without complex configuration. What distinguishes the 9907-029is its focused feature set—stripped of non-essential functions to reduce complexity, yet retaining core algorithms for stable engine operation, smooth startup/shutdown sequences, and basic diagnostics. This balance ensures it integrates quickly into existing systems while delivering the control precision small engines require.
9907-029
Technical specifications:
Model Number9907-029
Brand Woodward
Type Compact Engine Control Module
Input Voltage 12-24 V DC
Operating Temp Range -30°C to +65°C
Mounting Style DIN rail or panel mount (low-profile)
Dimensions 95 mm x 65 mm x 35 mm
Weight 180 g
Interface/Bus RS-485 (Modbus RTU)
Compliance CE, UL 1604
Supported Protocols Modbus RTU (primary)
Typical Power Draw 2.2 W
Contact Us Phone:+86 16626708626 WeChat/WhatsApp:+86 16626708626 Email: 3772179818@qq.com
9907-029
Main features and advantages:
Choosing the WOODWARD 9907-029 brings distinct advantages tailored to small-scale applications. Its compact size—nearly 30% smaller than the WOODWARD 9907-028—eliminates the need for custom enclosures or space modifications, reducing installation time and costs. This streamlined design also minimizes wiring complexity, with fewer connections required compared to larger modules, lowering the risk of installation errors and simplifying troubleshooting.
Beyond space savings, the module’s focused feature set ensures efficient operation. Its optimized control algorithms, while simplified, maintain engine speed within ±0.5% of setpoint, preventing the fluctuations that can cause generator voltage instability or equipment wear. The lower power draw (2.2 W) is particularly beneficial for battery-backed systems, extending runtime during power outages. Additionally, the WOODWARD 9907-029 reduces long-term maintenance overhead: its rugged construction resists vibration and dust, and built-in diagnostics flag issues like sensor faults or low voltage, allowing for proactive repairs before failures occur. For small-scale operations where resources are limited, these benefits translate to reliable performance without the burden of managing unnecessary complexity.
9907-029
Beyond space savings, the module’s focused feature set ensures efficient operation. Its optimized control algorithms, while simplified, maintain engine speed within ±0.5% of setpoint, preventing the fluctuations that can cause generator voltage instability or equipment wear. The lower power draw (2.2 W) is particularly beneficial for battery-backed systems, extending runtime during power outages. Additionally, the WOODWARD 9907-029 reduces long-term maintenance overhead: its rugged construction resists vibration and dust, and built-in diagnostics flag issues like sensor faults or low voltage, allowing for proactive repairs before failures occur. For small-scale operations where resources are limited, these benefits translate to reliable performance without the burden of managing unnecessary complexity.
9907-029
Application areas:
The WOODWARD 9907-029 excels in applications where size and simplicity drive success. In commercial backup generators—used to power offices, hospitals, or data centers during outages—it ensures stable voltage output by maintaining precise engine speed, preventing damage to sensitive electronics. Its compact design fits easily within generator enclosures, which are often space-constrained to fit in utility rooms or outdoor sheds.
In mobile power units, such as those mounted on construction vehicles or emergency response trucks, the WOODWARD 9907-029 withstands vibration and temperature swings, regulating auxiliary engines that power tools or lighting. Its low power draw is critical here, as these units often rely on batteries for operation.
Finally, in small manufacturing setups—like food processing lines or packaging machinery—the module controls auxiliary diesel engines that drive conveyors or pumps, ensuring consistent speed to maintain production quality. Its quick integration minimizes downtime during installation, a key advantage for facilities with limited maintenance windows.
9907-029
Related products:
9907-028 – Full-featured counterpart with expanded I/O for larger engines and complex systems
9907-031 – High-performance version with advanced fuel mapping for demanding small-engine applications
9907-156 – Redundant control module, compatible with the 9907-029 for mission-critical small-scale setups
9906-458 – Legacy predecessor, offering a cost-effective upgrade path from older Woodward compact controllers
9907-042 – Add-on Ethernet/IP module, enabling remote monitoring for the 9907-029
9907-085 – Natural gas-optimized variant, adapted for small gas engines in residential or light commercial use
9907-112 – Service tool interface, simplifying configuration and diagnostics for the 9907-029
Installation and maintenance:
Before installing the WOODWARD 9907-029, verify that the power supply provides stable 12-24 V DC—voltage drops below 10 V can cause erratic control behavior, especially during engine startup when current spikes are common. Check that the DIN rail or mounting surface is clean and flat; uneven mounting can strain internal components over time, particularly in vibrating environments like mobile units. Ensure the RS-485 communication bus is properly terminated (120Ω resistor) to prevent signal reflections, which are more likely in the shorter cable runs typical of small systems. It’s also critical to confirm the module’s firmware version supports your engine’s specific make and model—Woodward provides a compatibility chart online to avoid mismatches.
For ongoing maintenance, perform monthly checks of the status LED: a steady green indicates normal operation, while a flashing red light signals a critical fault (e.g., sensor loss) requiring immediate attention. Every three months, inspect electrical connections for corrosion, especially in humid environments like food processing facilities, and tighten any loose terminals. Unlike larger modules, the WOODWARD 9907-029 requires minimal calibration—an annual check using Woodward’s simplified calibration tool is sufficient to ensure speed and fuel settings remain accurate. Finally, update firmware annually to access improvements in small-engine control algorithms, which are frequently optimized based on real-world performance data.
WhatsApp: +86 16626708626
Email: 3772179818@qq.com
Phone: +86 16626708626
