Description
Woodward 8440-1843
Technical Specifications
- Processor: High-speed 50 MHz microprocessor.
- Memory: 53 MB for both program and data storage.
- Power Supply: Standard 220V AC, 50Hz input.
- Display: Front panel features a two-line text display (24 characters per line).
- Weight: Approximately 6.5 kg.
Functional Features
- Automated Sequencing: Manages complex turbine startup, acceleration, synchronization, and shutdown sequences.
- Valve Control: Precisely controls steam inlet valves via single or dual separate stage actuators.
- Dual Operating Modes: Features distinct Programming Mode for internal configuration and Running Mode for automated control.
- Menu-Driven Interface: Utilizes intuitive, menu-based software for easy parameter adjustment and maintenance.
Application Scenarios
Widely deployed in industrial steam turbines, utility turbine generators, and turbo-expander applications requiring precise speed and load control.
Performance Parameters
- Environmental Tolerance: Operates reliably in ambient temperatures ranging from 0°C to 60°C.
- Humidity Resistance: Rated for up to 60% relative humidity (non-condensing).
Material Composition
Constructed with a series of high-reliability printed circuit boards housed in a rugged, module-style metal enclosure designed for secure integration into control panels.
Structural Characteristics
Features a control-room mounting form factor with a front-facing operator interface. The modular design allows for easy access to internal components during maintenance.
Working Principle
The controller continuously samples turbine parameters (speed, temperature, pressure) via analog and digital inputs. Its microprocessor executes control algorithms to calculate the required valve position and outputs precise electrical signals to hydraulic actuators, maintaining the desired speed or load setpoint.
Installation Requirements
Must be mounted in a control panel with adequate ventilation to dissipate heat. Ensure the operating environment remains within the specified temperature and humidity limits to prevent electronic degradation.
Usage Precautions
- Always use the designated programming mode when altering control parameters to prevent unintended turbine behavior.
- Regularly back up the controller’s configuration data to external media.
- Ensure all electrical connections are properly grounded to prevent signal interference.
