
Product Description
Woodward 9907-175/A 2301D-ST Digital Load Sharing & Speed Control System
The Woodward 9907-175/A represents advanced digital control technology for steam turbine applications requiring precise load distribution and speed regulation. This 2301D-ST controller delivers exceptional performance in multi-unit power generation facilities where synchronized operation is critical.
Technical Specifications
- Model Number: 9907-175/A
- Series: 2301D-ST Digital Load Sharing
- Control Type: Digital PID with adaptive tuning
- Input Voltage: 24 VDC nominal (18-32 VDC range)
- Load Sharing Accuracy: ±1% of rated load
- Speed Control Range: 50-3600 RPM configurable
- Communication: Modbus RTU, RS-485 interface
- Operating Temperature: -40°C to +70°C
- Protection Rating: IP54 enclosure
Industrial Applications
This controller excels in demanding environments including combined heat and power (CHP) plants, district heating systems, industrial cogeneration facilities, and marine propulsion systems. The 2301D-ST architecture ensures seamless load transfer during grid disturbances while maintaining frequency stability across parallel turbine configurations.
Advanced Control Solutions
Featuring dual-channel redundancy and fail-safe operation modes, the 9907-175/A minimizes downtime risks. The integrated droop compensation algorithm automatically adjusts governor response based on system load conditions, preventing hunting oscillations common in legacy mechanical governors. Real-time diagnostics via the front-panel LCD enable rapid troubleshooting without external tools.
Common Technical Questions
Q: Can this controller manage multiple turbines simultaneously?
A: Yes, the 2301D-ST supports up to 8 turbines in parallel operation with isochronous or droop load sharing modes.
Q: Is retrofitting to existing Woodward 2301A systems possible?
A: Absolutely. The 9907-175/A maintains backward compatibility with 2301A wiring harnesses, simplifying upgrade projects.
Q: What communication protocols are supported?
A: Standard Modbus RTU over RS-485, with optional Ethernet/IP and PROFIBUS adapters available.
Q: Does it include overspeed protection?
A: Yes, triple-redundant overspeed detection with independent shutdown relays meets IEC 61508 SIL 2 requirements.
Warranty & Support
Every unit includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team provides configuration assistance, firmware updates, and calibration guidance throughout the product lifecycle.
Related Control Solutions
Enhance your turbine control system with these compatible products:
| Product | Application | Link |
|---|---|---|
| Woodward 8273-126 Digital Load Sharing | Diesel/Gas Engine Governor | View Product |
| Woodward 9905-970 2301D Load Sharing | Steam Turbine Control | View Product |
| Woodward 8280-300 Digital Speed Control | Standalone Speed Governor | View Product |
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