Description
Woodward PEAK-150 (P/N: 9905-864)
Technical Specifications
- Part Number: 9905-864.
- Control Type: Digital speed and load control for steam turbines.
- Analog Input: Accepts 4-20 mA remote speed control signals.
- Communication: Optional Modbus port supporting RS-232, RS-422, or RS-485 hardware configurations.
Functional Features
- Remote Speed Setting: Integrates seamlessly with plant-wide process control systems via 4-20 mA analog inputs.
- Dual Dynamics: Provides advanced dual dynamics speed control for enhanced stability during transients.
- Overspeed Testing: Includes built-in overspeed trip test functionality for safety verification.
- Start Modes: Supports both MANUAL START MODE and AUTO START MODE with configurable valve ramping.
Application Scenarios
Extensively utilized in industrial steam turbines, turbo-generators, and mechanical drive applications requiring precise digital governing and process integration.
Performance Parameters
- Remote Signal Failure: Latches and requires a reset when the remote speed set input drops below 2 mA (0.5 V) or exceeds 22 mA (5.5 V).
- Modbus Baud Rates: Configurable from 1200 to 19200 Baud.
Material Composition
Housed in a robust industrial enclosure designed to protect sensitive electronic modules from harsh plant environments.
Structural Characteristics
Features a front panel with dedicated ALARM RESET and START buttons, alongside status LEDs such as the RMT SPD ENABLED indicator.
Working Principle
The controller continuously monitors turbine speed via magnetic pickups and compares it against local or remote setpoints. It calculates the required valve position and drives the actuator via an internal driver to maintain the exact desired speed.
Installation Requirements
Must be mounted securely with proper electrical connections. When returning the unit, it requires protective caps on connectors, antistatic bags for modules, and at least 100 mm of industry-approved packing material.
Precautions for Use
Strictly observe electrostatic discharge (ESD) precautions when handling electronic modules. Always clear ALARM or TRIP conditions using the ALARM RESET button before initiating a normal start sequence.
