Description
WOODWARD 9907-164 Digital Governor Turbine Controller
1. Product Description
The WOODWARD 9907-164 is a high-performance digital microprocessor controller designed for precise speed and load control in steam turbines. As part of the 505 Series, it supports single or split-range actuators, enabling seamless integration with industrial and power generation systems. The controller features a user-friendly 2-line x 24-character display and a 30-function keypad for on-site configuration, allowing operators to adjust parameters such as critical speed avoidance, valve limiters, and auto-start sequences. With advanced communication protocols (RS-232/422, Modbus), it interfaces with SCADA systems for real-time monitoring and data logging.
The WOODWARD 9907-164 is a high-performance digital microprocessor controller designed for precise speed and load control in steam turbines. As part of the 505 Series, it supports single or split-range actuators, enabling seamless integration with industrial and power generation systems. The controller features a user-friendly 2-line x 24-character display and a 30-function keypad for on-site configuration, allowing operators to adjust parameters such as critical speed avoidance, valve limiters, and auto-start sequences. With advanced communication protocols (RS-232/422, Modbus), it interfaces with SCADA systems for real-time monitoring and data logging.
2. Key Technical Parameters
| Parameter | Specification |
|---|---|
| Module Type | Digital Governor Turbine Controller |
| Compatibility | Woodward 505 Series Turbine Systems |
| Input Voltage | 24 VDC (±10%) |
| Output Voltage | 0–10 VDC (analog), 30 VDC/5 A (relay) |
| Control Modes | Speed, Load, Isochronous |
| Communication Interfaces | RS-232/422, Modbus RTU |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | 356 mm (W) × 279 mm (H) × 102 mm (D) |
| Weight | 4.13 kg |
WOODWARD 9907-164
3. Advantages and Features
- Precision Control: Utilizes PID algorithms to maintain ±0.1% speed accuracy under varying loads.
- Flexible Configuration: Supports field-programmable logic for customizing shutdown criteria and alarm thresholds.
- Reliability: Withstands 95% humidity for 48 hours and includes redundant power supply options.
- Safety Features: Integrates overspeed protection, first-out shutdown indicators, and emergency stop functionality.
- Ease of Use: Intuitive menu-driven interface reduces commissioning time by 30% compared to legacy systems.
4. Application Fields and Case Studies
- Power Generation: Controls steam turbines in thermal power plants, optimizing efficiency during grid synchronization.
- Oil & Gas: Manages gas turbines in offshore platforms, ensuring stable operation in harsh environments.
- Marine Propulsion: Regulates diesel engines for marine vessels, providing smooth speed transitions.
- Case Study: A European power plant reduced maintenance costs by 20% using the 9907-164 to automate turbine startups and monitor bearing health.
5. Competitor Comparison
The 9907-164 offers dual communication protocols (Modbus + proprietary) and expandable I/O (16 discrete inputs, 6 analog inputs), surpassing many competitors’ single-protocol limitations. Its front-panel configuration eliminates the need for external software tools, streamlining setup and reducing dependency on specialized technicians.
The 9907-164 offers dual communication protocols (Modbus + proprietary) and expandable I/O (16 discrete inputs, 6 analog inputs), surpassing many competitors’ single-protocol limitations. Its front-panel configuration eliminates the need for external software tools, streamlining setup and reducing dependency on specialized technicians.
WOODWARD 9907-164
6. Selection Recommendations
- Compatibility: Ensure alignment with Woodward 505 Series actuators and control systems.
- Voltage Requirements: Verify 24 VDC supply stability to avoid signal fluctuations.
- Functionality: Choose between basic (speed-only) and advanced (speed+load) models based on application complexity.
- Environment: Opt for optional IP56 enclosures for outdoor or high-dust installations.
7. Precautions
- Grounding: Follow NEC/EN standards for proper grounding to prevent EMI interference.
- Firmware Updates: Regularly update firmware to access safety patches and new features.
- Calibration: Perform annual sensor calibration to maintain accuracy.
- Redundancy: Pair with a backup controller for mission-critical operations.
