Woodward 5461-655 |CPU Module, Origin: United States
1.5461-655 Product Overview
The Woodward 5461-655 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.
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2. 5461-655 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 5461-655 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.
What is a controller and what are its types
What is a controller? The controller is the command center of a computer, responsible for determining the sequence
of program execution and providing operational control commands required for each component of the machine when executing instructions
What are the common types of controllers? The main types of controllers include combinational logic controllers,
CPU controllers, LED controllers, microprogram controllers, access control controllers, etc.
The combinational logic controller is mainly composed of four components: instruction register, opcode decoder,
timing circuit, and instruction counter.
The CPU controller is mainly composed of three components: instruction register IR, program counter PC, and operation controller OC.
LED controllers are mainly classified into low-voltage LED product controllers, high-voltage LED product controllers,
and low-voltage serial controllers.
The basic components of a microprogram controller are control memory and microinstructions.
The main categories of access control controllers include RS485 networked door controllers, TCP/IP networked door
controllers, non networked door controllers, single door controllers, double door controllers, four door controllers and
multi door controllers, one-way controllers, and two-way controllers.
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