Description
🔹 Product Introduction
The WOODWARD 9907-018 is a low-voltage 2301A Electronic Load Sharing and Speed Control designed for prime mover speed regulation and generator load sharing. It is part of the 9905/9907 series and is intended for generator sets driven by diesel or gasoline engines, as well as steam or gas turbines.
The controller receives a speed signal from a magnetic pickup or similar speed-sensing device, processes the frequency signal, and provides an actuator command to regulate engine or turbine speed. During parallel generator operation, its load-sharing function allows generator sets to distribute load according to the selected control strategy.
🔹 Key Features
- Woodward 2301A electronic load sharing and speed control
- Model / Part Number: 9907-018
- Low-voltage 20–40 VDC power supply
- CE-approved model
- 0–200 mA actuator output
- Forward-acting configuration
- Single actuator application
- Generator speed regulation
- Generator load sharing during parallel operation
- Isochronous and droop operating modes
- Selectable speed sensing ranges
- Magnetic pickup speed sensing
- Front-panel adjustment controls
- Designed for engine and turbine-driven generator systems
🔹 Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | WOODWARD |
| Model | 9907-018 |
| Series | 2301A Electronic Load Sharing and Speed Control |
| Product Name | Low Voltage Load Sharing and Speed Control |
| Control Type | Electronic Speed & Load Sharing Control |
| Power Supply | 20–40 VDC |
| Actuator Output | 0–200 mA |
| Acting Type | Forward Acting |
| Actuator Configuration | Single |
| Speed Ranges | 500–1500 / 1000–3000 / 2000–6000 / 4000–12000 Hz |
| Operating Modes | Isochronous / Droop |
| Speed Input | Magnetic Pickup / Speed Sensor |
| Application | Diesel, Gasoline, Steam & Gas Turbine Generator Sets |
| Construction | Sheet-Metal Chassis with Single PCB |
| Condition | Used / Pre-Owned |
🔹 Functional Applications
The 9907-018 can be used in generator control systems where both speed regulation and load sharing are required.
Typical applications include:
- Diesel generator sets
- Gas engine generator sets
- Marine generator systems
- Industrial power generation
- Standby and emergency generator systems
- Parallel generator installations
- Steam turbine generator systems
- Gas turbine generator systems
- Generator control panel retrofits
- Replacement of existing 2301A controls
For parallel generator operation, the controller can work with load-sharing circuits and associated generator control equipment. Droop operation provides a straightforward method for parallel operation, while isochronous operation can maintain constant speed when the system configuration supports it.
🔹 Installation & Integration
Before installation, confirm that the replacement controller matches the existing Woodward 2301A configuration, actuator characteristics, speed range, and wiring.
The low-voltage 9907-018 requires a suitable 20–40 VDC supply. Power wiring should be correctly sized and fused. The speed pickup wiring should be separated from high-current or high-voltage wiring where practical, with appropriate shielding and grounding.
Verify the following during system integration:
- DC supply voltage and polarity
- Magnetic pickup type and signal level
- Selected speed range
- Actuator current rating
- Forward-acting configuration
- Load-sharing connections
- Droop/isochronous selection
- Generator PT/CT connections where applicable
- Minimum-fuel and shutdown circuits
- External speed trim or synchronizer connections
After installation, perform a controlled startup and verify stable speed response before placing the generator into normal parallel operation.
🔹 Maintenance Recommendations
Regular maintenance helps preserve stable generator control performance.
- Inspect terminal connections for looseness or corrosion.
- Check the DC supply voltage before troubleshooting the controller.
- Inspect speed pickup wiring and cable shielding.
- Check actuator wiring and output current.
- Verify speed-range and operating-mode settings.
- Inspect load-sharing and CT/PT wiring during generator maintenance.
- Keep the controller free from excessive dust, oil, and moisture.
- Avoid unnecessary adjustment of factory-calibrated controls.
- Use ESD precautions when handling the internal PCB.
- Confirm generator response after any replacement or adjustment.
When replacing an existing unit, record the original adjustment positions and wiring before removing the old controller.
🔹 FAQ
Q1: What is the Woodward 9907-018 used for?
It is a 2301A electronic controller used for prime mover speed regulation and generator load sharing.
Q2: Is the 9907-018 a low-voltage model?
Yes. The 9907-018 is designed for a 20–40 VDC supply.
Q3: What actuator output does the 9907-018 provide?
The model is specified for a 0–200 mA actuator output and a forward-acting configuration.
Q4: Can it be used for parallel generators?
Yes. The 2301A series is designed to support generator load sharing during parallel operation when correctly integrated with the generator system.
Q5: What speed ranges are available?
The 2301A series provides selectable ranges of 500–1500 Hz, 1000–3000 Hz, 2000–6000 Hz, and 4000–12000 Hz.
Q6: Can this controller directly replace another 2301A model?
Not automatically. The actuator current, acting direction, supply voltage, speed range, and generator/load-sharing configuration must all be matched before replacement.
Q7: What should be checked before purchasing a replacement?
Confirm the complete part number, revision, actuator requirements, wiring configuration, and existing generator control setup.
🔹 Recommended Related Woodward Models
- Woodward 9907-014 – 2301A 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 9905-024 – 2301A Speed Control
- Woodward 9905-028 – 2301A Speed Control
- Woodward SPM-A – Synchronizer
🔹 Product Summary
The WOODWARD 9907-018 2301A is a low-voltage electronic load sharing and speed control intended for generator prime-mover applications. With 20–40 VDC operation, 0–200 mA forward-acting actuator control, selectable speed ranges, and generator load-sharing capability, it is a practical replacement and maintenance component for compatible 2301A generator control systems.
For replacement projects, always match the complete Woodward part number and system configuration rather than selecting a controller based only on the 2301A series designation.
