Woodward 1680-649 |CPU Module, Origin: United States
1.1680-649 Product Overview
The Woodward 1680-649 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. 1680-649 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 1680-649 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.
Principles and Applications of Microcontrollers
microcontroller
A microcontroller is a single-chip microcomputer that integrates the main components of a microcomputer onto a single chip. Microcontrollers were born in
the mid-1970s, and after more than 20 years of development, their cost has become increasingly low while their performance has become more powerful,
making their applications ubiquitous and widespread in various fields. For example, motor control, barcode readers/scanners, consumer electronics,
gaming devices, telephones HVAC、 Building safety and access control, industrial control and automation, and white goods (washing machines, microwave ovens), etc.
Microcontrollers (MCUs) can be classified from different aspects: according to the width of the data bus, they can be divided into 8-bit, 16 bit, and 32-bit
machines; According to the memory structure, it can be divided into Harvard structure and Von Neumann structure; According to the categories of embedded
program memory, it can be divided into OTP, mask, EPROM/EEPROM, and flash memory; According to the instruction structure, it can be divided into CISC
(Complex Instruction Set Computer) and RISC (Reduced Instruction Set Computer) microcontrollers.
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