Woodward 8291-020 from SAUL ELECTRIC | In Stock
1.8291-020 Product Overview
The Woodward 8291-020 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. 8291-020 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 8291-020 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.
Concepts of Drivers and Motor Drivers
Drivers are used in many places, but they are a holistic concept. Simply put, a driver is the hardware that drives a certain type of device.
For example, drivers are used on computers and other industrial equipment or tools. This article focuses on what a driver is and what a motor driver is.
What is a driver
Driver broadly refers to the hardware that drives a certain type of device. In the field of computer science, a drive refers to a disk drive.
A storage area formatted with a drive letter through a file system. The storage area can be a floppy disk CD、 Hard drives or other types
of disks. Click on the corresponding icon in Windows Explorer or My Computer to view the detailed contents of the drive.
The driver is located in the middle of the main control box (Main Controller) ->Driver ->Motor during the entire control process.
The main function of the driver is to receive signals from the main control box (NC CARD), process
the signals, and then transfer them to the motor and the sensors related to the motor, and feedback the working condition
of the motor to the main control box (Main Controller).
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