Woodward 9905-760 DSLC Digital Synchronizer & Load Control Module

Woodward 9905-760 DSLC Digital Synchronizer & Load Control Module

The Woodward 9905-760 DSLC (Digital Synchronizer and Load Control) module delivers advanced synchronization and load management for AC generator systems. Engineered for mission-critical power applications, this module ensures seamless paralleling operations, voltage matching, and load distribution across multiple generator sets.

Core Technical Specifications

• Model Number: 9905-760
• Control Type: Digital Synchronizer and Load Control (DSLC)
• Voltage Sensing Range: 100-690 VAC, three-phase
• Frequency Range: 50/60 Hz auto-detection
• Synchronization Accuracy: ±5 electrical degrees
• Load Sharing Precision: ±2% of rated load
• Communication Protocol: Modbus RTU, RS-485
• Operating Temperature: -40°C to +70°C
• Protection Rating: IP20 (panel-mounted)
• Power Supply: 18-32 VDC

Industrial Applications

Power Generation Facilities: Manages synchronization and load distribution for multi-generator installations in utility-scale power plants, ensuring grid stability and optimal fuel efficiency.

Marine Propulsion Systems: Controls parallel operation of shipboard generators, maintaining continuous power supply during vessel operations and dynamic load conditions.

Data Center Backup Systems: Coordinates emergency generator paralleling during utility outages, providing uninterrupted power to critical IT infrastructure with millisecond-level precision.

Industrial Cogeneration Plants: Synchronizes combined heat and power (CHP) systems with utility grids, enabling seamless transitions between island mode and grid-connected operation.

Advanced Control Solutions

The 9905-760 module integrates sophisticated algorithms for voltage magnitude matching, phase angle alignment, and frequency synchronization. Its real-time monitoring capabilities detect slip frequency, voltage differential, and phase rotation errors before initiating breaker closure. The module's adaptive load control adjusts generator output based on system demand, preventing overload conditions and optimizing fuel consumption across paralleled units.

Built-in protection features include reverse power detection, over/under voltage monitoring, and frequency deviation alarms. The module communicates with supervisory control systems via Modbus RTU, enabling remote monitoring, setpoint adjustment, and diagnostic data retrieval for predictive maintenance programs.

Common Technical Questions

Q: Can the 9905-760 synchronize generators with different ratings?
A: Yes, the module supports paralleling of generators with varying kW/kVA ratings. Load sharing is proportional to each unit's capacity, with adjustable droop settings to compensate for governor response differences.

Q: What is the typical synchronization time?
A: Under normal conditions, the module achieves synchronization within 5-15 seconds, depending on initial frequency and voltage differentials. The sync window is user-configurable for specific application requirements.

Q: Does this module support dead bus synchronization?
A: Yes, the 9905-760 includes dead bus closing functionality, allowing the first generator to energize an unpowered bus without synchronization checks.

Q: Is the module compatible with renewable energy sources?
A: The module is optimized for synchronous generators. For integration with inverter-based sources (solar, wind), additional interface equipment may be required to match control signal characteristics.

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Warranty & Support

Every Woodward 9905-760 DSLC module includes a comprehensive 12-month warranty covering manufacturing defects and component failures. Our technical support team provides installation guidance, configuration assistance, and troubleshooting support throughout the product lifecycle.

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