Description
Woodward 8273-126
Technical Specifications
- Power Supply: Operates on a 220V AC power supply with a 50Hz output frequency.
- Processing Speed: Features a high-speed microprocessor operating at 50 MHz.
- Memory Capacity: Equipped with 53 MB of program capacity and 53 MB of data capacity.
- Dimensions & Weight: Compact module dimensions of 15.2 cm x 5.1 cm x 20.3 cm, weighing approximately 0.7 kg.
- Display: Front panel features a two-line text display (24 characters per line).
Functional Features
- Valve Actuation Control: Controls single or dual-stage actuators to operate steam inlet valves, precisely regulating turbine speed and load.
- Multi-Mode Operation: Supports speed control, load control, and synchronous control (isochronous mode) to optimize different operational states.
- Advanced Diagnostics: Offers real-time self-diagnostics, continuously monitoring performance data and triggering alarms upon detecting faults.
- Menu-Driven Software: Utilizes an intuitive menu-driven software interface accessible via the front operator panel for easy parameter adjustment.
Application Scenarios
Widely deployed in power generation plants, petrochemical facilities, and industrial manufacturing processes that utilize steam turbines, gas turbines, or turbo-expanders for mechanical drive or power generation.
Performance Parameters
- Input Configuration: Includes 16 contact inputs (4 dedicated, 12 programmable) and 6 programmable current inputs (4-20 mA).
- Output Configuration: Provides 0-10V DC analog output signals for driving external actuators and valves.
- Communication: Equipped with RS-232 and Ethernet interfaces, supporting Modbus protocols for seamless integration with DCS/PLC systems.
Material Composition
Constructed with high-grade industrial electronic components, housed in a durable metal enclosure designed to withstand harsh industrial environments.
Structural Characteristics
- Modular Design: Compact, module-based structure facilitating easy installation into control room panels.
- Operator Interface: Integrated front-panel display and buttons for localized control and monitoring without external devices.
Working Principle
The module continuously acquires analog and discrete signals from field sensors. The 50 MHz microprocessor executes complex control algorithms to calculate the precise valve position required. It then outputs a 0-10V DC signal to the actuator, creating a closed-loop control system that maintains the desired turbine speed or load.
