Woodward 9907-252 Price Discount | In Stock
1.9907-252 Product Overview
The Woodward 9907-252 belongs to the 505/505E series digital turbine controllers. It is a microprocessor-based control module designed for single-valve steam turbines,
including single extraction/admission systems or split-range actuator configurations.
The controller features a front panel Operator Control Panel (OCP) with a two-line, 24-character display and multi-function keypad, allowing easy on-site configuration and monitoring.
2. 9907-252 Technical Specifications and Parameters
| Parameter | Details |
|---|---|
| Power Supply | +24 VDC, approx. 1 A |
| I/O Outputs | Discrete Outputs: 8 Analog Outputs: 6 Actuator Outputs: 2 |
| Display / HMI | Two-line, 24-character LCD, with multi-function keypad |
| Dimensions | Approx. 14 × 11 × 4 in (35.6 × 27.9 × 10.2 cm) |
| Weight | Approx. 9.11 lbs (4.13 kg) |
| Operating Temperature | –4 to +140 °F (–20 to +60 °C) |
| Storage Temperature | –40 to +185 °F (–40 to +85 °C) |
| Humidity Standard | 95% RH at 20-55 °C for 48 hours without damage |
| Protection Class | Typically meets industrial dust and water protection standards |
| Communication Protocol | Supports Modbus, RS-232 / RS-422 serial interfaces |
3. Brand History
Woodward, Inc., founded in 1870 and headquartered in Fort Collins, Colorado, USA, is a global leader in energy control systems. The company has a long history of innovation in turbine control, engine management,
and power generation systems.
Woodward products are widely recognized for their reliability and precision in demanding industrial and power generation applications.
4. Applications in Industrial Automation
The 9907-252 plays a critical role in industrial automation and power generation environments:
- Steam Turbine Control: Manages startup, speed regulation, and extraction/admission control of steam turbines.
- Power Generation Systems: Used in power plants to regulate turbine-driven generators for stable frequency and load management.
- Compressor and Pump Drive Control: Ensures precise speed control for turbine-driven compressors and pumps.
- Process Industry Applications: Applied in chemical plants, refineries, and other industries requiring precise turbine operation.
- Safety and Protection Functions: Includes overspeed protection, critical speed avoidance, actuator travel limits, and event logging for operational safety.
2. Current control (vector control)
Vector control, also known as field oriented control (FOC), is an advanced control method that achieves precise speed and
position control by controlling the magnetic field and torque of the motor. Vector control can provide better dynamic performance
and control accuracy, making it suitable for high-performance applications.
3. Direct Torque Control (DTC)
Direct torque control is a control method based on motor torque, which directly controls the torque of the motor rather than
indirectly controlling voltage or current. DTC has fast dynamic response and high control accuracy, making it suitable for
applications that require fast response.
4. Servo control
Servo control is a high-precision control method commonly used in the fields of precision machinery and robotics.
Servo control can not only achieve precise speed and position control, but also complex trajectory tracking and synchronization control.
5. Fuzzy logic control
Fuzzy logic control is a control method based on fuzzy logic theory, which deals with uncertainty and nonlinear problems
through fuzzy rules. Fuzzy logic control is suitable for complex systems that are difficult to describe using traditional control theory.
6. Adaptive control
Adaptive control is a control method that can automatically adjust control strategies based on changes in system parameters.
It is suitable for systems with large parameter changes or difficult to accurately model.
Conclusion
The performance parameters and control methods of the drive have a direct impact on the overall performance of the system.
Choosing appropriate drivers and control methods can ensure the efficient, stable, and precise operation of the system. With the
development of technology, new control theories and methods continue to emerge, providing more possibilities for
the performance improvement and application expansion of drivers.
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