Description
The Woodward 8290-103 is a high-precision speed controller within the EPG (Electrical Powered Governor) series, distinguished by its support for integrated position feedback. This feature enables a closed-loop control strategy where the controller continuously monitors the actual position of the actuator shaft in real-time, allowing for superior accuracy and responsiveness compared to open-loop configurations. Designed for versatility, the 8290-103 is compatible with the full spectrum of Woodward actuators, making it a flexible solution for diverse industrial engine requirements.
As a highly capable Woodward 8290-103 controller, it is designed to maintain extreme stability. It offers an impressive steady-state speed band, typically maintaining speed within \pm 0.25\% of the rated value. This level of precision is critical for applications involving sensitive power generation, where even minor fluctuations in engine RPM can impact the quality of the electrical output or the efficiency of the mechanical load.
Technical Specifications
- Product Name: EPG Speed Control with Position Feedback
- Model Number: 8290-103
- Control Mode: Closed-loop with position feedback
- Actuator Compatibility: Compatible with all Woodward EPG actuators
- Steady State Speed Band: \pm 0.25\% of rated speed
- Voltage: Designed for standard industrial battery architectures
- Weight: Approximately 0.55 kg
- Dimensions: Standardized EPG modular housing
- Origin: Engineered to Woodward industrial quality standards
Frequently Asked Questions
⚙️ What is the benefit of the position feedback feature?
In standard governors, the controller sends a signal and “hopes” the actuator reaches the correct position. With position feedback, the actuator sends a signal back to the controller indicating its exact angle. This allows the 8290-103 to compensate for mechanical resistance, linkage friction, or oil viscosity changes, resulting in much tighter speed control.
🔌 Why is the \pm 0.25\% steady-state speed band significant?
This tight tolerance means that if your engine is rated for 1800 RPM, the governor will hold the speed between 1795.5 and 1804.5 RPM. This is exceptionally stable and is required for synchronizing generators to a grid or powering frequency-sensitive electronic equipment.
⚠️ Does the 8290-103 require specialized wiring for the feedback signal?
Yes. Unlike standard controllers, you must connect the feedback wires from the actuator to the specific input terminals on the 8290-103. Using shielded, twisted-pair cabling for these feedback signals is essential to prevent electrical noise from causing the controller to receive “jittery” position data.
🛠️ Can I use this with any EPG actuator?
While the 8290-103 is compatible with the EPG line, remember that only actuators equipped with an internal position sensor (like the 8256-079) can utilize the feedback loop. If you pair this with an actuator that lacks feedback, the controller will function in a basic open-loop mode, and you will lose the \pm 0.25\% precision benefit.
Recommended Woodward Series Models
To optimize your high-precision governing system, the following models are frequently integrated with the 8290-103:
- Woodward 8256-079 (Actuator with Sealed Position Feedback)
- Woodward 1724 EPG Actuator Series
- Woodward 512 Series Actuator
- Woodward 1712 Series Actuator
- Woodward 8290-075 (High-Frequency Controller)
- Woodward 8290-050 (Isochronous Controller)
- Woodward 8440-013 (501 Series Controller)
- Woodward EG-3P Actuator
- Woodward EG-6P Actuator
- Woodward L-Series Electric Actuator
