Description
Product Overview
The Woodward SPM-D11 8440-1706 is a premium synchronizer and load-sharing control module engineered for critical power generation applications. As part of Woodward’s SPM-D series, this model (with the exact designation 8440-1706) delivers advanced paralleling functionality for diesel and gas generators, ensuring seamless transition and optimal load distribution in mission-critical systems.
Designed for industrial and commercial use, the Woodward SPM-D11 8440-1706 excels in environments requiring high-precision frequency matching (±0.25° phase accuracy) and reactive load sharing (±1% balance). Its integration with Woodward’s ProAct™ and NetSync™ control platforms allows for centralized monitoring, making it ideal for hybrid power plants, marine propulsion systems, and data center backup grids. The module’s ruggedized construction meets IP20 protection standards, ensuring reliability in harsh operating conditions.
Technical Specifications
| Parameter Name | Parameter Value |
| Full Model Number | SPM-D11 8440-1706 |
| Manufacturer | Woodward |
| Product Type | Generator Synchronization & Load-Sharing Module |
| Input Voltage | 18–32 VDC (24V nominal) |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Communication Protocols | RS-232/RS-485 (Modbus RTU), CANbus optional |
| Frequency Range | 40–70 Hz (adjustable) |
| Synchronization Accuracy | ±0.25° phase angle |
| Load Sharing Accuracy | ±1% of rated kW/kVAR |
| Mounting | DIN rail (standard) |
| Dimensions | 72 x 120 x 115 mm (2.8 x 4.7 x 4.5 in) |
| Certifications | CE, UL, marine-grade compliant |
Woodward SPM-D11 8440-1706
Main Features and Advantages
Precision Synchronization
The Woodward SPM-D11 8440-1706 ensures ultra-fast, shockless generator paralleling via its patented phase-matching algorithm, minimizing mechanical stress during grid connection.
Adaptive Load Management
Supports isochronous (speed-droop) and droop control modes for flexible grid/off-grid operation.
Reactive power compensation balances kVARS across multiple gensets, preventing overloads.
Robust Connectivity
Modbus RTU and CANbus interfaces enable integration with SCADA, PLCs, and Woodward’s ProAct XT controllers.
Real-time diagnostics with event logging for predictive maintenance.
Durability
Marine-grade components resist corrosion, vibration, and extreme temperatures.
Conformal-coated PCB for humidity resistance (up to 95% non-condensing).
Woodward SPM-D11 8440-1706
Application Field
The Woodward SPM-D11 8440-1706 is deployed in:
Marine & Offshore: Ensures stable power for propulsion and hotel loads on ships.
Data Centers: Coordinates backup generators during grid outages with zero interruption.
Oil & Gas: Manages power distribution in remote drilling rigs and LNG plants.
Microgrids: Balances renewable energy sources (solar/wind) with diesel gensets.
Related Products
SPM-D12 8440-1707: Enhanced version with multi-language HMI support.
ProAct XT 8440-1620: Integrated control system for large-scale power plants.
LSM-200 8440-1501: Simplified load-sharing module for smaller applications.
NetSync 8440-1800: Networked synchronization solution for smart grids.
EGCP-3 8440-1405: Standalone generator controller compatible with SPM-D11.
Installation and Maintenance
Pre-installation preparation: Verify input voltage compatibility and allocate a DIN rail space in a vibration-damped enclosure. Use shielded cables for communication ports to prevent EMI interference.
Maintenance recommendations: Perform annual calibration checks using Woodward’s ToolKit™ software. Inspect terminals for corrosion and update firmware via RS-232.
Product Guarantee
Woodward provides a 2-year warranty for the SPM-D11 8440-1706, covering defects in materials and workmanship. Global technical support includes 24/7 troubleshooting access and firmware updates. The module’s MTBF exceeds 100,000 hours, reflecting Woodward’s commitment to reliability.
