Description
- The WOODWARD 8272-720 is a specialized 2301A series electronic control designed for precise load sharing and speed regulation of diesel or gas engines and steam turbines. This model is engineered for high-performance applications where multiple generators must operate in parallel, ensuring proportional load distribution among all units. Built with a rugged chassis and analog circuitry, the 8272-720 provides exceptional response times and reliability in harsh industrial and marine environments, offering critical control functions such as isochronous speed control and droop operation.
Product Parameters
- Brand: Woodward
- Model Number: 8272-720
- Series: 2301A Speed Control
- Input Voltage: 18–40 VDC (Low Voltage Model)
- Power Consumption: Approximately 5W
- Speed Range: 500 Hz to 15,000 Hz (Magnetic Pickup Frequency)
- Output Signal: 0–200 mA (Designed for Woodward Actuators)
- Load Sharing: ±5% proportional load sharing capability
- Enclosure Rating: IP20 (Chassis Mount)
- Operating Temperature: -40°C to +70°C
This control module serves as the primary intelligence for engine-governing systems, translating speed and load signals into precise actuator movements to maintain system frequency under varying load conditions.
Comparison with Similar Models
The 8272-720 is categorized as a Low Voltage, Forward-Acting model within the 2301A family. It differs from “Reverse-Acting” models (like the 8272-6XX series) in how it handles actuator signals; forward-acting units increase current to increase fuel, which is essential for specific fail-safe configurations. Unlike the 2301D digital series, this analog model offers simpler manual calibration via potentiometers, making it preferred for sites where software-based tuning is not practical or where ultra-low latency analog response is required for stability.
Operation Tips
- Potentiometer Calibration: Use a small insulated screwdriver to adjust the “Rated Speed” and “Gain” settings. It is recommended to perform these adjustments while the engine is at operating temperature for the most accurate stability tuning.
- Shielded Wiring: Always use shielded twisted-pair cabling for the magnetic pickup (MPU) and load-sharing lines to prevent electromagnetic interference from causing speed hunting or erratic behavior.
- MPU Voltage: Ensure the Magnetic Pickup provides at least 1.5 Vrms at the lowest cranking speed to ensure the 8272-720 can accurately sense engine rotation during the start sequence.
- Grounding: Ensure the chassis is properly grounded to the control panel backplate to minimize noise and protect the internal sensitive analog components from static discharge.
