Description
Woodward 9903-049
Technical Specifications
- Product Series: 505 Digital Turbine Controller.
- Processor: High-speed microprocessor for real-time control execution.
- Display: Front panel features an alphanumeric display for local parameter viewing.
- I/O Capacity: Supports a wide array of analog and digital inputs/outputs for turbine parameters.
Functional Features
- Automated Sequencing: Manages complex turbine startup, acceleration, synchronization, and shutdown sequences.
- Valve Control: Precisely controls steam inlet valves via separate stage actuators.
- Programmable Logic: Allows users to customize control strategies and protection curves.
- Communication: Supports serial communication for integration with plant DCS or SCADA systems.
Application Scenarios
Widely deployed in industrial steam turbines, turbo-expanders, and small utility turbines requiring reliable and precise speed and load control.
Performance Parameters
- Control Accuracy: High-precision speed and load regulation with fast transient response.
- Reliability: High Mean Time Between Failures (MTBF) for continuous 24/7 operation.
Material Composition
Housed in a rugged, painted steel enclosure designed for panel mounting. Internal printed circuit boards feature conformal coating to protect against moisture, dust, and corrosive atmospheres.
Structural Characteristics
A compact, front-accessible module featuring an intuitive keypad and display for local operation, calibration, and diagnostics. All field wiring connections are made via removable terminal blocks.
Working Principle
The controller continuously samples turbine parameters (speed, temperature, pressure) and compares them to setpoints. The microprocessor executes control algorithms to calculate the required valve position and outputs precise signals to hydraulic actuators to maintain stable operation.
Installation Requirements
Mount in a clean, dry control panel with adequate ventilation. Route speed sensing and actuator cables away from high-voltage power lines to prevent electromagnetic interference.
Usage Precautions
- Always back up the controller’s configuration data before making changes.
- Verify all protection setpoints match the turbine manufacturer’s specifications.
- Perform regular functional tests of the overspeed protection circuit.
