Description
Technical Specifications
Product Model | 9907-173
Manufacturer | Woodward
Product Type | Digital Speed Control Module
Input Voltage | 18-32V DC (24V Nominal)
Control Channels | 2 Independent Channels
Communication Protocols | CANbus J1939, Modbus RTU
Speed Range | 0-10,000 RPM (Configurable)
Operating Temperature | -40°C to +85°C
Protection Class | IP67 (Enclosure), IP20 (Terminals)
Response Time | ≤10 ms (Full Scale)
Certifications | UL, CE, ATEX II 3D
Warranty | 5-Year Limited
Minimum Order Quantity | 3 Units
Key Features and Advantages
The 9907-173 delivers military-grade reliability for critical speed control applications, featuring dual-redundant processing cores with automatic failover (<1ms transition). Its adaptive PID algorithm maintains ±0.05% speed stability even under 50% instantaneous load changes. The module’s conformal-coated PCB withstands 98% humidity and corrosive atmospheres, making it ideal for offshore drilling rigs.
Advanced diagnostics: Built-in spectrum analysis detects engine misfires or turbine blade imbalances through vibration signature monitoring. The 5-line OLED display provides real-time trend graphs and fault code visualization. Dual CANbus ports enable daisy-chaining of up to 32 modules without additional repeaters, reducing system wiring by 60%.

9907-175
Application Areas
In combined-cycle power plants, the 9907-173 synchronizes gas and steam turbines with grid frequency within ±0.01Hz. Marine propulsion systems utilize its salt fog resistance (ISO 9227 1000h) to maintain precise RPM control in engine room environments. Oil pipeline compressors leverage the module’s SIL 3-certified overspeed protection, triggering shutdowns within 8ms of critical threshold breaches.
Mining operations deploy this controller for dragline excavator motors, where its vibration tolerance (5Grms 20-2000Hz) ensures reliability during rock excavation. The Modbus RTU interface integrates legacy diesel generators into modern SCADA networks for hybrid power plant management.
Related Products
9907-170: Single-channel version for basic speed regulation
EGB-200 Governor: Hydraulic actuator with CANbus interface
PROACT 4P: Predictive maintenance software suite
9907-175: High-speed variant (0-25,000 RPM)
WIO-16: Expansion I/O module for analog/digital signals
CM-3000: Vibration monitoring companion module
Installation and Maintenance
Installation preparation: Ground the 9907-173 chassis to ≤2Ω using 6AWG copper cable. Maintain 100mm clearance from high-voltage (>600VAC) conductors. Use shielded twisted-pair cables for sensor inputs (Belden 9729 or equivalent). Configure node addresses via DIP switches before power-up.
Maintenance recommendations: Perform bearing frequency analysis quarterly through the FFT display. Replace desiccant capsules in terminal box annually. Update firmware using Woodward Toolkit™ software during planned outages. For continuous operation above 70°C, conduct infrared inspections every 6 months.
Product Assurance
Every 9907-173 undergoes MIL-STD-810H environmental testing including 50G shock and 20-2000Hz vibration cycles. Woodward’s 24/7 Global Support Network provides emergency response within 4 hours for critical infrastructure customers. The 5-year warranty covers all components including connectors and displays. Lifetime access to ControlExpert™ web portal includes predictive analytics and spare parts management tools.
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