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.
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