Description
Woodward 9907-1106
Technical Specifications
- Processing Speed: High-speed 32-bit industrial microprocessor for rapid algorithm execution.
- Memory Capacity: Expanded flash memory for additional data logging and curve points.
- Electrical Parameters: Universal AC/DC power input with wide voltage tolerance.
- Display Interface: Features a front-panel operator control panel with graphical or text display.
- Input/Output Configuration: Comprehensive discrete and analog I/O for valve actuation and sensor monitoring.
Functional Features
- Valve Management: Controls single or multiple inlet valves with linearization and overlap compensation.
- Start-Up Sequencing: Programmable warm-up, roll, and acceleration sequences with rate limiting.
- Comprehensive Protection: Hardware and software-based safety limits including overspeed, low lube oil, and vibration monitoring.
- Trend Recording: Captures high-resolution waveform data prior to and during fault events.
Application Scenarios
Extensively utilized in industrial steam turbines, utility turbine generators, and turbo-expander applications across petrochemical, metallurgy, and energy distribution sectors.
Performance Parameters
- Environmental Tolerance: Adapts to operating temperatures from -40°C to +85°C.
- Signal Precision: Supports precise 4-20mA current inputs and 0-10V DC analog outputs for accurate actuator positioning.
- Control Accuracy: Steady-state speed accuracy better than ±0.1% of rated speed.
Material Composition
Constructed as a robust modular unit consisting of industrial-grade printed circuit boards enclosed in a durable, protective housing designed for safe control room installation.
Structural Characteristics
- Dimensions: Compact form factor optimized for standard 19-inch rack or panel mounting.
- Weight: Lightweight design for easy handling and installation.
- Protection Rating: IP54 rated front panel, featuring anti-vibration and shock-resistant design for long-term stability.
- Certifications: CE and UL certified, with optional explosion-proof housings available for hazardous environments.
Working Principle
The controller continuously monitors turbine parameters through its programmable inputs. Based on the selected control program, the microprocessor calculates the required valve positions and outputs analog signals to the electro-hydraulic converters. It dynamically adjusts steam or gas flow to maintain the precise target speed or load while continuously monitoring for fault conditions.
Installation Requirements
- Must be installed using a control room mounting configuration.
- Requires a stable, clean power supply with appropriate surge protection.
- Ensure the operating environment does not exceed specified temperature and humidity limits.
Usage Precautions
- Strictly adhere to the manufacturer’s guidelines when modifying parameters in Programming Mode.
- Never bypass or disable overspeed protection logic or safety interlocks during operation.
- Perform regular functional tests of the self-diagnostic system and actuator feedback loops.
