Description
⚙️ Product Overview
The WOODWARD 9907-018 is a low-voltage 2301A Electronic Load Sharing and Speed Control designed for prime movers driven by diesel or gasoline engines, as well as steam or gas turbines. It provides speed regulation and load-sharing functions for generator and prime-mover control systems.
The 9907-018 belongs to the 9905/9907 series and is identified as a CE-approved low-voltage model with a 20–40 VDC power supply and a 0–200 mA actuator-current range. It is configured for forward-acting control and single-actuator applications.
During generator paralleling, the load-sharing section senses generator load and coordinates the controlled prime mover so that generators can share load proportionally. The 2301A can also operate in isochronous or droop modes depending on the application and system configuration.
🔧 Key Features
- Woodward 2301A electronic load sharing and speed control
- Part Number: 9907-018
- Low-voltage 20–40 VDC power supply
- 0–200 mA actuator output
- Forward-acting configuration
- Single-actuator application
- CE-approved model
- Speed and load-sharing control for prime movers
- Supports isochronous and droop operating modes
- Switch-selectable speed ranges
- Suitable for generator paralleling and engine control systems
📊 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | WOODWARD |
| Model | 2301A |
| Part Number | 9907-018 |
| Series | 9905/9907 Series |
| Product Name | Electronic Load Sharing and Speed Control |
| Application | Engine, Generator & Turbine Control |
| Power Supply | 20–40 VDC |
| Actuator Current | 0–200 mA |
| Speed Range | 500–1500 / 1000–3000 / 2000–6000 / 4000–12000 Hz selectable |
| Weight | Approx. 1.8 kg |
The 2301A series documentation specifies an operating temperature range of approximately -40 to +85°C and a standard speed range setting of 2000–6000 Hz, with other ranges selectable according to the application.
🏭 Typical Applications
- Diesel generator sets
- Gas engine generator systems
- Steam turbine control
- Gas turbine control
- Generator paralleling systems
- Prime-mover speed regulation
- Load-sharing systems
- Industrial power-generation equipment
- Marine generator and propulsion-related systems
- Retrofit and replacement of existing 2301A controls
🔌 Control & Technical Functions
Speed Control
The 2301A receives a speed signal from a suitable sensing device, converts the signal to a proportional control value, and regulates the actuator to maintain the required prime-mover speed.
Load Sharing
When multiple generators operate in parallel, the load-sharing section measures the load carried by the generator and adjusts the control system so that generator loading is distributed proportionally.
Droop / Isochronous Operation
Isochronous operation can maintain constant prime-mover speed under suitable operating conditions, while droop operation provides speed control as a function of load for parallel or infinite-bus applications.
🛠️ Installation & Maintenance
- Confirm that the existing system requires the 9907-018 configuration before replacement.
- Verify the 20–40 VDC supply and actuator-current requirements.
- Check the magnetic pickup or other speed-sensing signal before startup.
- Confirm actuator wiring and polarity against the system wiring diagram.
- Record existing GAIN, RESET, DROOP, SPEED, and other adjustment settings before replacement.
- Inspect terminals and connectors for oxidation, looseness, or contamination.
- Use appropriate ESD precautions when handling the internal circuit board.
- After installation, perform controlled startup and verify stable speed regulation.
- Check load-sharing performance after generators are synchronized.
- Never change the selected speed range without confirming the required operating speed and sensor frequency.
❓ Common Questions & Answers
Q1: What is the part number?
A: The part number is 9907-018.
Q2: What is the product series?
A: It belongs to Woodward’s 2301A 9905/9907 Electronic Load Sharing and Speed Control series.
Q3: Is the 9907-018 a low-voltage model?
A: Yes. The 9907-018 is specified as a low-voltage model using a 20–40 VDC supply.
Q4: What actuator current does it support?
A: The 9907-018 is specified for a 0–200 mA actuator-current range.
Q5: What engines can use the 2301A?
A: The series is designed for prime movers including diesel and gasoline engines, steam turbines, and gas turbines.
Q6: Can it be used for generator paralleling?
A: Yes. Load sharing is specifically intended to coordinate generator loading during parallel operation.
Q7: Does it support droop control?
A: Yes. The 2301A can operate in droop or isochronous configurations depending on the application.
Q8: Can another 2301A replace the 9907-018?
A: Not automatically. The actuator direction, actuator current, power supply, speed range, and system wiring must all be matched before substitution.
⭐ Recommended WOODWARD Models
- WOODWARD 9907-018 2301A Load Sharing & Speed Control
- WOODWARD 9907-019 2301A Load Sharing & Speed Control
- WOODWARD 9907-023 2301A Load Sharing & Speed Control
- WOODWARD 9907-024 2301A Load Sharing & Speed Control
- WOODWARD 9905-020 2301A Speed Control
- WOODWARD 9905-021 2301A Speed Control
- WOODWARD 9905-022 2301A Speed Control
- WOODWARD 9905-023 2301A Speed Control
- WOODWARD 9905-028 2301A Speed Control
- WOODWARD 9905-029 2301A Speed Control
📦 Spare-Parts Recommendation
The WOODWARD 9907-018 is a practical replacement and maintenance spare for systems using the corresponding 2301A low-voltage configuration. Before installation, match the complete part number and revision with the existing controller and verify the actuator, speed-sensing, power-supply, and load-sharing arrangements.
