Woodward 5461-769 |CPU Module, Origin: United States
1.5461-769 Product Overview
The Woodward 5461-769 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. 5461-769 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 5461-769 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.
The programs in microcontrollers are usually stored in EPROM or EEPROM. This is a non-volatile memory
(the program does not disappear when the device is turned off) that can be continuously erased and rewritten.
Application of microcontroller
Many devices use microcontrollers. Some examples:
The anti-theft alarm includes a microcontroller chip that is connected to a keyboard, display, and
sensor/contact inputs. Microcontrollers are usually self-contained chips, while ALU (arithmetic logic unit),
memory, and I/O are all included in one integrated circuit
Early automatic washing machines used cam switches to sort operations during the washing cycle. This
is a rather complex switch installed at the end of the knob shaft that you use to select the cleaning program.
Newer machines use microcontrollers to sort operations. Other devices such as microwave ovens and dishwashers
may include microcontrollers
The TV uses a microcontroller to process channel selection and read the status of buttons on the TV
Microcontrollers are used for engine control and displaying information on the vehicle”s dashboard
Digital cameras use microcontrollers to process input from buttons, control image capture and display.
Single chip microcontroller example
Some commonly used microcontrollers:
Zilog Z8
Intel 8051
Texax Instruments TIMSP430
Atmel AVR
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