Description
The Woodward 9907-1183 is a high-performance digital governor designed for steam turbine control, offering precise speed, load, and pressure regulation in industrial and power generation applications. As part of Woodward’s 505E series, this controller supports single-extraction and admission steam turbines, driving generators, compressors, and pumps. It features a 32-bit microcontroller for advanced PID control and real-time monitoring, ensuring optimal efficiency and safety. The 9907-1183 can operate standalone or integrate with plant DCS systems, providing seamless integration with existing infrastructure. Its NEMA 4X-rated enclosure (optional) protects against dust, water, and harsh environments, making it suitable for offshore, petrochemical, and power plant settings.
Parameter |
Specification |
Input Voltage |
18–32 VDC |
Communication |
2 Modbus RTU/ASCII ports |
Display |
24-character, 2-line LCD |
Ambient Temperature |
-25°C to +65°C (-13°F to +149°F) |
Dimensions |
356 × 279 × 102 mm (14 × 11 × 4 inches) |
Weight |
4.13 kg (9.11 lbs) |
Safety Compliance |
Class I, Division 2 (hazardous locations) |
Control Modes |
Speed, load, pressure, ratio/limiter |

- Dual Redundancy: Optional dual-channel configuration enhances reliability.
- Zero-Speed Detection: Prevents turbine startup under unsafe conditions.
- Password Protection: Secures programming and prevents unauthorized changes.
- PID Flexibility: Configurable for speed, inlet pressure, or extraction control.
- Modbus Integration: Enables remote monitoring and diagnostics.
- Power Generation: Controls steam turbines in coal, gas, and combined-cycle plants.
- Oil & Gas: Manages compressors and pumps in refineries and offshore platforms.
- Industrial Machinery: Optimizes speed and load for large rotating equipment.
Case Study:
A U.S. power plant reduced turbine downtime by 20% using the 9907-1183, which automated speed adjustments during grid fluctuations while maintaining precise extraction pressure control.
- Superior Ruggedness: NEMA 4X enclosure surpasses standard IP ratings in corrosive environments.
- Ease of Configuration: Menu-driven software simplifies setup compared to competitors’ proprietary systems.
- Scalability: Supports single or dual-extraction configurations without hardware modifications.
- System Complexity: Choose the 9907-1183 for applications requiring both extraction and admission control.
- Safety Requirements: Opt for dual-channel redundancy in critical systems.
- Environmental Conditions: Specify the NEMA 4X enclosure for outdoor or harsh environments.
- Calibration: Regularly verify sensor inputs for accurate speed and pressure measurements.
- Software Updates: Apply Woodward’s latest firmware to access new features and security patches.
- Installation: Follow IP66 guidelines for outdoor enclosures to prevent water ingress.
- Load Testing: Conduct periodic load tests to validate control performance.
声明山西鑫业达国际贸易有限公司 is your trusted partner for
Woodward 9907-1183 and automation solutions. Visit
www.xydcontrol.com or contact us for sales and technical support.
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