Woodward 9907-838 Load Sharing Module for Caterpillar Engines

Woodward 9907-838 Load Sharing Module Overview

The Woodward 9907-838 Load Sharing Module delivers precision load distribution for Caterpillar engine-driven generator sets operating in parallel configurations. Engineered to integrate seamlessly with Woodward 2301A speed control systems, this module enables both isochronous and droop load sharing modes to optimize power generation efficiency across multiple gensets.

Technical Specifications

• Model Number: 9907-838
• Load Sharing Modes: Isochronous and Droop
• Compatible Controls: Woodward 2301A series
• Engine Compatibility: Caterpillar diesel and gas engines
• Input Voltage: 18-32 VDC nominal (24 VDC typical)
• Operating Temperature: -40°C to +70°C
• Communication Protocol: Analog signal interface
• Mounting: DIN rail or panel mount

Key Applications

Power Generation Facilities: Coordinate multiple generator sets in utility and industrial power plants to balance electrical loads and maintain grid stability during peak demand periods.

Marine Propulsion Systems: Ensure balanced power distribution across ship auxiliary generators, preventing overload conditions and extending equipment service life in maritime environments.

Data Center Backup Power: Manage parallel genset operation during utility outages, delivering reliable load sharing to protect critical IT infrastructure and maintain uptime guarantees.

Oil & Gas Operations: Control remote wellhead and pipeline generator systems where multiple engines must share loads efficiently in harsh environmental conditions.

Operational Benefits

This module eliminates manual load balancing by automatically adjusting fuel delivery signals to maintain equal kW distribution across paralleled generators. The isochronous mode maintains precise frequency control while sharing loads proportionally, ideal for isolated power systems. Droop mode allows stable operation when connecting to utility grids or other power sources with established frequency references.

Integration & Compatibility

The 9907-838 interfaces directly with Woodward 2301A governor controls through dedicated analog I/O connections. Installation requires minimal wiring modifications to existing control panels. The module monitors generator output via CT inputs and adjusts speed reference signals to each governor, creating a closed-loop load sharing network. Compatible with both single-phase and three-phase sensing configurations.

Common Technical Questions

Q: Can this module retrofit older Caterpillar gensets?
A: Yes, provided the engines use Woodward 2301A governors. Verify governor model compatibility before ordering.

Q: What's the maximum number of generators supported?
A: The 9907-838 supports up to 8 generators in parallel when properly configured with appropriate CT ratios.

Q: Does it require external programming?
A: No external software needed. Configuration uses onboard potentiometers and DIP switches for load sharing parameters.

Q: Is it suitable for variable speed applications?
A: This module is designed for constant-speed generator applications. Variable speed systems require different control strategies.

Warranty & Support

Every Woodward 9907-838 module includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team provides installation guidance, troubleshooting assistance, and configuration recommendations throughout the product lifecycle.

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