Woodward 9905-021 Price Discount | In Stock
1.9905-021 Product Overview
The Woodward 9905-021 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. 9905-021 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 9905-021 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.
Brushless motor controller: suitable for brushless DC motors, it changes the speed and direction of the motor by changing the input pulse width and frequency.
4、 The main function of the motor controller
The motor controller plays a crucial role in the motor system, mainly including the following aspects:
Control motor speed: The motor controller can control the motor speed to meet different application requirements. For example,
in electric vehicles, the controller can adjust the motor speed in real time according to the driver”s instructions to maintain stable vehicle speed.
Control motor direction: The motor controller can control the direction of the motor, allowing it to rotate forward, reverse, or stop.
This function is particularly important in fields such as automation equipment and logistics equipment.
Control motor acceleration and deceleration: The motor controller can control the acceleration and deceleration process of the
motor to gradually start or stop, reducing the impact of the motor when starting or stopping. This is of great significance for protecting the motor and extending its service life.
Protecting the motor: The motor controller has multiple protection functions such as overcurrent, overheating, and overvoltage,
which can timely cut off the power supply in case of abnormal situations in the motor, preventing motor damage and fire accidents.
Energy conservation and emission reduction: By monitoring and optimizing the operation status of the motor in real-time,
the motor controller can reduce energy consumption and improve energy utilization efficiency. In the fields of new energy such
as wind power and solar power, motor controllers can more effectively utilize renewable energy by adjusting the operating status of motors.
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