Description
Woodward’s 2301A series load sharing and speed control model 9905-138 is engineered to provide precise speed regulation and active power load sharing for diesel, gas, and steam turbines or engines. Operating on a low-voltage power supply of 20 to 40 Vdc, this unit features a control output of 20 to 160 mA and utilizes a single-pole contact to govern prime mover speed and coordinate load distribution across parallel-running generator sets.
📊 Technical Specifications & Datasheet Parameters
• Brand: Woodward
• Model: 9905-138
• Series: 2301A
• Product Name: Load Sharing and Speed Control
• 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 low-voltage 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, single-pole contact wiring, and power input leads must be shielded and properly grounded to eliminate electromagnetic interference (EMI). Verify all switch settings, 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, single-pole contact wiring, and terminal block connections to ensure secure termination.
- Apply the 20–40 Vdc low-voltage control power supply to the unit.
- Monitor internal indicator LEDs to confirm successful startup and self-diagnostics.
- Check input signal responses and contact switching to ensure proper 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 9905-138 unit.
- Allow internal components to de-energize completely before performing wiring or maintenance tasks.
❓ Frequently Asked Questions (Q&A)
Q: What power supply range does the Model 9905-138 utilize?
A: The unit operates on a low-voltage direct current power supply ranging from 20 to 40 Vdc.
Q: What is the control output specification for this model?
A: It features a control output range of 20 to 160 mA to interface with compatible prime mover actuators.
Q: What type of switching contact does this model incorporate?
A: The controller utilizes a single-pole contact configuration for internal switching and control functions.
🚀 Recommended Woodward Models
- 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)
- Woodward 9907-162 (2301D Digital Load Sharing and Speed Control)
