Woodward | 9907-018 | 2301A Load Sharing Speed Control

Description

The model 9907-018 is a CE-marked, low-voltage electronic load sharing and speed control unit from Woodward’s 2301A series. Designed for industrial prime movers such as diesel engines, gas engines, and steam or gas turbines, this compliance-rated controller governs rotational speed and coordinates active load sharing across parallel-connected generator sets. It delivers precise frequency regulation and reliable power distribution while meeting rigorous European Union safety and electromagnetic compatibility standards.

📊 Technical Datasheet Parameters

⚙️ Operating Standards & Installation Methods

• Handling Precautions: Observe standard electrostatic discharge (ESD) safeguards when handling the control unit. Ensure all external low-voltage power feeds are completely isolated before performing physical mounting or terminal wiring tasks.
• Mounting Integration: Secure the controller housing firmly onto a vibration-free industrial control cabinet backplate, ensuring adequate spacing around the unit for natural convection cooling and clean cable routing.
• Wiring Verification: Double-check all terminal screw connections for speed sensor inputs, low-voltage DC power supply lines, actuator control outputs, and inter-unit load-sharing lines to guarantee signal integrity and maintain CE compliance shielding.

🔌 Strict Startup and Shutdown Sequence

• Pre-Power Inspection: Inspect all external wiring terminations, verify that actuator feedback loops are securely wired, and confirm that speed reference signals are properly established before energizing.
• Startup Sequence:
  1. Energize the low-voltage DC power supply inputs feeding the controller.
  2. Verify that internal supervisory circuits and status indicators show normal operational readiness.
  3. Release the prime mover start sequence and allow speed to settle on the primary reference channel.
  4. Engage the load-sharing loop once steady-state synchronization is achieved across parallel units.
• Shutdown Sequence:
  1. Perform a controlled procedural load ramp-down of the prime mover.
  2. Disengage the parallel load-sharing connection mode prior to complete prime mover shutdown.
  3. Disconnect power feeds to the controller only after the engine or turbine has come to a complete mechanical standstill.

💡 Product Usage Guide & Maintenance Best Practices

• CE Compliance Maintenance: Ensure that shielded control cables are properly grounded at both ends or per manufacturer recommendations to preserve electromagnetic compatibility (EMC) integrity in industrial environments.
• Routine Calibration Audits: Periodically verify speed control calibration and check terminal screw tightness to prevent signal drift in high-vibration operating settings.

❓ Frequently Asked Questions (Q&A)

• Q: What certifications does model 9907-018 carry?
  • A: It is a CE-marked unit, indicating compliance with applicable European Union directives for safety and electromagnetic compatibility.
• Q: What power supply voltage does this controller use?
  • A: It is a low-voltage model operating on a DC supply range of 20 to 40 Vdc (24 Vdc nominal).
• Q: What are the primary functions of this controller?
  • A: It provides precise electronic speed governing and active parallel load sharing for industrial prime movers.

🗂️ Recommended Woodward Alternative Models & Series

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