Woodward 9905-003 Load Sharing Speed Controller

The Woodward 9905-003 Load Sharing Speed Controller is a high-precision electronic control unit designed to manage the load sharing and speed regulation of diesel or gas turbine engines in generator sets. This controller is part of Woodward’s renowned 2301A series, engineered to maintain stable generator synchronization in isochronous or droop modes across multiple gensets or isolated systems.

The 9905-003 excels in parallel operation scenarios, enabling seamless real-time power load distribution and effective speed control through analog setpoints. The unit ensures excellent frequency control, responsiveness, and adaptability, making it ideal for critical power generation applications requiring reliability and long-term performance.

Technical Specifications

Applications

The Woodward 9905-003 is designed for use in power generation and prime mover systems where precise load distribution and speed control are vital. Typical application areas include:

• Parallel Generator Systems – Synchronization and load balancing in multiple generator configurations.

• Power Plants – Ensures frequency and voltage stability in utility-grade plants.

• Industrial Backup Power Systems – Maintains steady power output under varying loads.

• Marine Generators – Controls propulsion or auxiliary generator sets.

• Mining and Oil & Gas Facilities – Supports remote and rugged applications.

Product Advantages

• Highly Accurate Load Sharing: Optimized for real-time dynamic load distribution between parallel-running generators.

• Wide Operating Range: Functions reliably in extreme temperature environments, from –40 °C to +85 °C.

• Flexible Control Modes: Supports both isochronous and droop operation, enhancing adaptability to various system configurations.

• Rugged Design: Built to endure harsh industrial conditions, ensuring longevity and minimal maintenance.

• Proven Compatibility: Seamlessly integrates with other Woodward products, including actuators and control panels.

• Fast Response Time: Advanced electronics ensure rapid reaction to load changes, improving overall generator performance.

• Ease of Integration: Standard panel-mount configuration and clear terminal identification simplify installation.

Frequently Asked Questions (FAQ)

1. Q: What is the main function of the Woodward 9905-003?

   A: It is designed to manage speed and load sharing in generators running in parallel.

2. Q: Can the 9905-003 operate in both isochronous and droop modes?

   A: Yes, it supports both modes, allowing flexibility in generator operation strategies.

3. Q: Is this controller suitable for marine applications?

   A: Yes, it is frequently used in marine environments due to its wide temperature tolerance and reliability.

4. Q: What power supply does the 9905-003 require?

   A: It requires a 90–150 VDC power input for proper operation.

5. Q: What kind of actuator can be connected to the controller?

   A: It supports Woodward EG series electric actuators and other compatible current-driven types.

6. Q: How is the load sharing signal transmitted?

   A: Load sharing signals are transmitted via voltage (0–6 VDC) or current (0–1 mA) input lines.

7. Q: What speed input signal does it accept?

   A: It uses magnetic pickups ranging from 1 to 30 VRMS and 100 to 10,000 Hz.

8. Q: Is the controller certified for use in regulated markets?

   A: Yes, it carries CE, CSA, and RoHS certifications.

9. Q: Can I use the 9905-003 in outdoor enclosures?

   A: Not directly—its open chassis design (IP00) requires a protective enclosure for outdoor or dusty environments.

10. Q: Does the controller support remote speed adjustment?

    A: Yes, via analog input for remote speed reference (usually a potentiometer or 0–5 VDC signal).