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Woodward 9905-211
Product Full Name: Woodward 9905-211 2301A Series Digital Speed Control & Load Sharing Governor Module
Product Introduction: Original microprocessor-based digital speed governor from Woodward 2301A series. It integrates adaptive PID speed closed-loop control, multi-unit parallel load sharing, actuator drive control and comprehensive protection logic. It supports both isochronous constant speed mode and droop speed droop mode, and fully matches Woodward SPM-A synchronizer modules.
Detailed content
Technical Specifications:
- Operating Power Supply: DC 24V nominal (18–32V wide voltage)
- Speed Signal Input Range: 500–15000Hz magnetic pickup pulse signal
- Actuator Drive Output: 0–200mA current drive signal
- Control Algorithm: Adaptive PID closed-loop speed control
- Speed Control Precision: ≤±0.1% speed error
- Communication Interfaces: RS232, RS422 serial communication
- Three-Phase CT/PT Inputs for load detection
- Operating Temperature: -40°C to +85°C
- Safety Certification: Class 1 Division 2 hazardous area compliance
- Installation Method: Panel fixed mounting
Functional Features:
- Integrated adjustable startup fuel limit and startup ramp control logic
- Automatic idle speed to rated speed smooth transition control
- Built-in manifold air pressure (MAP) and torque limit protection
- Real-time parameter monitoring and internal fault data logging
- Supports manual speed trim adjustment via external potentiometer
- Stable load sharing control for multi-generator parallel systems
- Complete speed sensor disconnection and abnormal fault protection
Application Scenarios:
- Industrial steam turbine generator speed regulation systems
- Diesel/natural gas engine generator set control systems
- Turbocompressor prime mover speed control equipment
- Marine ship auxiliary engine governor control systems
- Industrial CHP cogeneration power station speed & load control
