Description
WOODWARD 9907-164 Digital Turbine Governor Control Module Documentation
1. Product Overview
The WOODWARD 9907-164 is a CE/UL-certified digital microprocessor controller module designed for steam turbines, turbogenerators, and turboexpanders. As part of the Woodward 505/505E series, it offers precise control over turbine speed, load, and critical operations like startup and shutdown. The 9907-164 supports single extraction or admission configurations, leveraging split-stage actuators to manage steam inlet valves efficiently. Its rugged design and EMI/RFI shielding ensure reliability in harsh industrial environments.
2. Key Technical Parameters
| Parameter | Specification |
|---|---|
| Module Type | Digital Turbine Governor |
| Input Voltage | +24Vdc ±10% (1A max) |
| Discrete Inputs | 16 contact inputs (4 dedicated, 12 programmable) |
| Analog Inputs | 6 × 4–20mA current inputs |
| Outputs | 2 × 4–20mA (actuator control) |
| Communication | RS-232/RS-422 with Modbus RTU |
| Operating Temperature | -40°C to +60°C |
| Dimensions | 14W × 11H × 4D inches |
| Weight | 9.11 lbs |
| Display | 2-line × 24-character LCD |
3. Advantages and Features
- Precision Control:
- Critical speed avoidance and auto-start sequence optimize turbine performance.
- Valve limiters prevent overloading during operation.
- Flexibility:
- Programmable I/O configuration adapts to diverse turbine setups.
- Supports both isochronous (fixed speed) and droop (variable speed) modes.
- Reliability:
- Self-diagnostic capabilities and first-out shutdown indicators reduce downtime.
- CE/UL certification ensures compliance with global safety standards.
4. Application Areas and Use Cases
- Energy: Power plants, combined cycle systems.
- Manufacturing: Industrial steam turbines for process control.
- Oil & Gas: Turboexpanders in cryogenic applications.
Case Study: A North American power plant integrated the 9907-164 to manage a steam turbine fleet, achieving 98.5% uptime and a 15% reduction in maintenance costs through predictive diagnostics.
5. Competitive Comparison
The 9907-164 distinguishes itself with:
- Dual Communication Options: Native Modbus RTU and RS-232/422 compatibility for seamless integration with DCS systems.
- Field Configurability: Front-panel keypad and LCD allow on-site adjustments without external tools.
- Redundancy Support: Expandable I/O for dual-actuator setups, enhancing system resilience.
6. Selection Recommendations
- Application Type: Choose the 9907-164 for single-extraction turbines; opt for higher models (e.g., 9907-167) for multi-stage configurations.
- Environment: Ensure compatibility with operating temperatures (-40°C to +60°C) and humidity (95% RH for 48 hours).
- Software: Pair with Woodward’s 505 View or OP View™ for advanced monitoring and troubleshooting.
7. Precautions
- Installation: Use shielded cables for analog inputs to minimize noise interference.
- Load Management: Avoid exceeding 20mA output to prevent actuator damage.
- Calibration: Schedule annual checks to verify sensor accuracy and software updates.
Shanxi Xinyeda International Trade Co., Ltd. supplies WOODWARD 9907-164 and automation solutions. Visit www.xydcontrol.com or contact us for sales and technical support.
