Description
The Woodward 8256-078 is a sophisticated Actuator within the EPG 1724 series, specifically designed for applications requiring high-precision control and long-term reliability. A key differentiator for this model is its integrated sealed position feedback, which provides the speed control unit with real-time data regarding the actuator’s current state. This closed-loop functionality allows for finer adjustments and faster response times, making it an essential component for demanding industrial engine and turbine applications powered by a 24VDC source.
Product Technical Details
- Model Number: 8256-078
- Series: EPG (1724 Configuration)
- Feedback Mechanism: Sealed position feedback
- Operating Voltage: 24 VDC
- Wiring Guidance (12 AWG): Max length 75 ft.
- Wiring Guidance (14 AWG): Max length 35 ft.
- Weight: ~2.1 kg
- Country of Origin: United States of America
Common Questions & Answers
💡 Why is the wire length/gauge relationship so critical for the 8256-078? Because this actuator operates on a 24V supply and requires significant current to maintain its position or adjust the fuel rack, electrical resistance in the wiring is a major factor. If the wire is too thin or too long, you will experience a voltage drop at the actuator terminals. This prevents the unit from reaching its full torque potential and can cause the internal electronics to struggle, leading to sluggish engine response.
⚙️ What is the benefit of the sealed position feedback? In standard actuators, the controller sends a signal and assumes the throttle has moved as requested. With the 8256-078, the sealed feedback system reports the actual mechanical position back to the governor. This allows the system to detect and compensate for mechanical resistance, linkage binding, or even degradation in the fuel system, significantly improving engine stability under varying load conditions.
🛡️ Can I use a longer wire length than recommended? It is strongly advised against exceeding the specified 75 ft. (for 12 AWG) or 35 ft. (for 14 AWG) limits. If your installation requires a greater distance, you must upgrade to a thicker gauge wire (lower AWG) to ensure that the voltage reaching the actuator remains within the required operational threshold.
🔧 Is the 1724 model designation different from other EPG units? Yes, the 1724 designation usually refers to a specific torque output class and internal feedback configuration. It is important to treat this as a unique part number when sourcing replacements to ensure the mounting bolt pattern and the feedback signal protocol match your existing controller setup exactly.
Recommended Woodward Series & Models
To maintain optimal performance in your power generation setup, the following models are frequently integrated alongside the 8256-078:
- Woodward 8290-038 (EPG Speed Control Module)
- Woodward 8272-356 (Magnetic Pickup Speed Sensor)
- Woodward 8256-021 (Alternative EPG 524 Model)
- Woodward 8290-039 (Versatile EPG Speed Control)
- Woodward 8270-1002 (701A Digital Governor)
- Woodward 8404-1002 (Peak 150 Controller)
- Woodward 9907-162 (2301A Load Sharing Controller)
- Woodward 8273-001 (EasyGen 1000 Series)
- Woodward 8256-012 (Standard EPG Actuator)
- Woodward 8290-186 (Integrated EPG Controller System)
