Woodward 9905-367 DSLC Digital Synchronizer & Load Control Module

Woodward 9905-367 DSLC: Advanced Digital Synchronizer & Load Control Solution

The Woodward 9905-367 Digital Synchronizer Load Control (DSLC) module delivers comprehensive paralleling, synchronization, and load management for AC generator systems. Engineered for mission-critical power applications, this intelligent control module ensures seamless generator coordination, optimal load distribution, and reliable power system operation across industrial, marine, and utility installations.

Core Technical Specifications

• Control Functions: Synchronization, load sharing, VAR/PF control, reverse power protection
• Input Voltage Range: 100-690 VAC, 50/60 Hz auto-sensing
• Control Power: 18-32 VDC or 85-264 VAC universal input
• Load Sharing Accuracy: ±1% of rated load across paralleled units
• Sync Closure Time: Adjustable 0.5-30 seconds with phase-matching precision
• Communication Ports: RS-485 Modbus RTU, discrete I/O expansion capability
• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Protection Rating: IP54 front panel, suitable for harsh industrial environments

Industrial Application Scenarios

Multi-Generator Power Plants: Coordinate up to 32 paralleled generators with precision load distribution, automatic synchronization, and seamless load transfer during startup and shutdown sequences.

Marine Propulsion Systems: Manage shipboard power generation with dynamic load sharing, blackout prevention, and automatic bus transfer for uninterrupted vessel operations.

Data Center Backup Power: Ensure continuous uptime through intelligent paralleling of standby generators with utility grid, featuring soft-loading and reverse power protection.

Island Microgrids: Enable autonomous operation of distributed generation assets with frequency and voltage droop control, maintaining grid stability without external references.

Integrated Control Solutions

The 9905-367 DSLC module functions as the central intelligence hub for generator paralleling systems. Its digital architecture processes real-time voltage, frequency, and phase angle measurements to execute precise breaker closure timing. Advanced load-sharing algorithms continuously adjust governor and AVR setpoints, maintaining balanced kW and kVAR distribution across all online generators.

Built-in protection logic monitors reverse power conditions, load unbalance, and synchronization failures, triggering configurable alarms and automatic corrective actions. The module's Modbus interface enables integration with SCADA systems, providing remote monitoring, setpoint adjustment, and diagnostic data logging.

Common Technical Questions

Q: Can the 9905-367 synchronize generators with different ratings?
A: Yes, the DSLC supports mixed-capacity paralleling through proportional load sharing based on generator nameplate ratings programmed during commissioning.

Q: What communication protocols are supported?
A: Standard Modbus RTU over RS-485. Optional Ethernet gateway modules enable Modbus TCP and DNP3 integration for enterprise monitoring systems.

Q: How does the module handle frequency variations during synchronization?
A: Adaptive sync algorithms automatically adjust closure timing windows based on measured slip frequency, ensuring safe paralleling across ±0.5 Hz frequency differentials.

Q: Is the unit compatible with renewable energy sources?
A: The DSLC can coordinate with inverter-based resources when configured for isochronous or droop-controlled grid-forming operation modes.

Warranty & Technical Support

Every Woodward 9905-367 DSLC module includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team provides application engineering assistance, commissioning guidance, and troubleshooting support throughout the product lifecycle. Firmware updates and configuration tools are available through Woodward's service portal.

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