Description
Woodward’s 2301A series load sharing and speed control model 9905-147 is a reverse-acting load sharing and speed controller designed to provide precise speed regulation and active power load distribution for industrial prime movers. In this reverse-acting configuration, an increasing input speed error signal results in a decreased output current signal to the actuator, providing inverse governing logic required by specific turbine or engine valve designs while maintaining stable power grid synchronization.
📊 Technical Specifications & Datasheet Parameters
• Brand: Woodward
• Model: 9905-147
• Series: 2301A
• Product Name: Reverse-Acting Load Sharing and Speed Controller
• Place of Origin: United States
• Operational Status: Active / Industrial Grade
• Dimensions: Approximately 200 mm × 150 mm × 80 mm (7.9 in × 5.9 in × 3.1 in)
• Weight: Approximately 1.5 kg (3.3 lbs)
• Country of Origin: United States
• Power Consumption / Power: 20–40 Vdc control power supply input (Max 25 W)
⚙️ Operation Standards & Usage Methods
Installation must strictly adhere to the manufacturer’s technical manual and be executed by qualified control system technicians. Mount the unit securely inside a protective NEMA/IP-rated industrial cabinet to shield internal circuitry from ambient moisture, corrosive elements, and high vibration levels. All control wiring, actuator connections, magnetic pickup (MPU) speed sensors, and power input leads must be shielded and properly grounded to eliminate electromagnetic interference (EMI). Verify all switch settings, reverse-acting response characteristics, gain adjustments, and terminal configurations before powering on the control loop.
🔌 Power-Up & Power-Down Sequence
Power-Up Sequence:
- Inspect all external wiring, actuator links, speed sensing probes, and terminal block connections to ensure secure termination.
- Apply the 20–40 Vdc control power supply to the unit.
- Monitor internal indicator LEDs to confirm successful startup and self-diagnostics.
- Check input signal responses to ensure proper reverse-acting operation before enabling prime mover fuel flow.
Power-Down Sequence:
- Unload the prime mover safely and bring the engine or turbine to a complete stop.
- Disengage any external actuator control signals and lock out fuel or steam delivery systems.
- Remove the 20–40 Vdc control power supply from the 9905-147 unit.
- Allow internal components to de-energize completely before performing wiring or maintenance tasks.
❓ Frequently Asked Questions (Q&A)
Q: What does the reverse-acting configuration provide on the Model 9905-147?
A: The reverse-acting configuration means that an increase in the input speed error signal causes a decrease in output actuator current, delivering the inverse control response needed for specialized valve or actuator setups.
Q: What power supply range does this unit require?
A: The controller operates on a direct current power supply input ranging from 20 to 40 Vdc.
Q: Can this controller manage multiple generators in parallel?
A: Yes, the 2301A series is specifically designed to provide precise load sharing capabilities when interconnected with other compatible governing systems on isolated or utility-parallel power grids.
🚀 Recommended Woodward Models
- Woodward 9905-138 (2301A Load Sharing and Speed Control)
- Woodward 9905-134 (Reverse Speed Control)
- Woodward 9905-068 (2301A Load Sharing and Speed Control)
- Woodward 9905-036 (2301A Load Sharing and Speed Control)
- Woodward 9905-032 (2301A Turbine Control with 0-400 mA Actuator)
- Woodward 9905-028 (2301A Diesel/Gasoline Engine Control)
- Woodward 9905-024 (2301A Dual Actuator Control)
- Woodward 9905-020 (2301A Individual Actuator Control)
- Woodward 8272-611 (2301A Load Sharing and Speed Control)
- Woodward 9907-018 (2301A Standard Speed Control)
