Digital guide
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Woodward 9905-020P
Product Overview
An analog microprocessor-based controller from Woodward’s 2301A series, specifically designed for diesel and gas generator sets. It provides precise isochronous speed control and real kW load sharing for parallel-operated gensets. The unit’s compact design and robust construction make it an industry standard for both new installations and retrofits in power generation systems.
Detailed content
Technical Specifications
- Power Supply: 20–40 VDC, 15 W max power consumption
- Speed Signal Input: 1 kHz–3 kHz frequency range
- Actuator Drive Output: 0–200 mA proportional current
- Control Modes: Isochronous (zero droop) and droop (2–5%)
- Operating Temperature: -20 °C to +70 °C
- Humidity: 95% non-condensing
- Mounting: Panel mount or DIN rail mount
Functional Characteristics
- Accurate load sharing between multiple parallel generator sets
- Stable speed regulation under varying load conditions
- Built-in reverse power protection to prevent generator motoring
- Adjustable speed droop for parallel operation synchronization
- Simple potentiometer adjustments for speed and load gain
- EMI-resistant design for operation in electrically noisy environments
Application Scenarios
Industrial standby generators, commercial power systems, marine power plants, and multi-generator parallel operation systems.
