Description
📌 Product Introduction
The WOODWARD 2301A 9907-014 Rev. F is an electronic speed control designed for regulating the speed and load of diesel or gas engines and steam or gas turbines. It is part of the Woodward 2301A 9907 series and is commonly used in generator sets, prime-mover control systems, and industrial power applications.
The 9907-014 is a low-voltage, forward-acting 2301A speed control. Woodward documentation identifies this part number as a standard speed-control model for a 10–40 VDC supply range. The 2301A platform supports isochronous speed control, external droop, load sharing, and proportional actuator control.
⚙️ Key Features
- Woodward 2301A electronic speed control
- Part number 9907-014
- Revision F
- Forward-acting configuration
- Low-voltage DC supply
- Designed for prime-mover speed regulation
- Isochronous operating mode
- External droop capability
- Compatible with Woodward load-sharing arrangements
- Proportional actuator control
- Switch-selectable speed-frequency ranges
- Front-accessible adjustment potentiometers
- Suitable for generator and turbine control systems
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Woodward |
| Model | 2301A |
| MPN | 9907-014 Rev. F |
| Product Name | Electronic Speed Control |
| Series | 2301A / 9907 |
| Control Type | Electronic Speed & Load Control |
| Acting Direction | Forward Acting |
| Supply Voltage | 10–40 VDC |
| Operating Modes | Isochronous / Droop |
| Speed Ranges | 500–1500 Hz / 1000–3000 Hz / 2000–6000 Hz / 4000–12000 Hz |
| Speed Sensor | Magnetic pickup / speed-sensing device |
| Actuator Interface | Proportional actuator output |
| Application | Diesel/Gas Engines, Steam/Gas Turbines, Generator Sets |
| Construction | Sheet-metal chassis with single PCB |
| Revision | F |
| Country of Origin | United States |
| Condition | Used / Pre-Owned |
Woodward’s 2301A documentation specifies selectable speed ranges of 500–1500 Hz, 1000–3000 Hz, 2000–6000 Hz, and 4000–12,000 Hz. The 9907-014 is identified in the Woodward part-number table as the low-voltage, standard, forward-acting model.
🔄 Speed & Load Control Functions
The 2301A is designed to regulate prime-mover speed through a proportional actuator connected to the fuel or steam metering mechanism.
In isochronous mode, the controller maintains the selected engine or turbine speed as load changes, provided the prime mover has sufficient capacity. It can also be used with Woodward load-sharing equipment when multiple generators operate on an isolated bus.
In droop mode, speed is intentionally adjusted as load changes. This is useful when a generator operates against an infinite bus or when multiple prime movers operate in parallel.
🔌 Installation & System Integration
A typical 2301A control system includes the electronic speed control, an external DC power source, a magnetic pickup or other speed-sensing device, and a proportional actuator. Generator applications may additionally use current and potential transformers for load measurement.
Before replacing an existing controller:
- Confirm the existing part number is 9907-014 or an approved equivalent.
- Verify the control requires the low-voltage DC version.
- Check the forward-acting actuator configuration.
- Confirm the magnetic pickup and selected speed range.
- Verify actuator current requirements.
- Check droop and load-sharing wiring where applicable.
- Inspect terminal connections and shielded signal wiring.
- Confirm all potentiometer settings against the original commissioning records.
- Perform the Woodward installation checkout procedure before starting the prime mover.
- Test the system under controlled conditions before returning it to normal operation.
Incorrect speed-range selection or improper adjustment can result in unstable operation or overspeed, so commissioning should follow the applicable Woodward procedure.
🛠️ Maintenance Recommendations
- Inspect the enclosure for corrosion, impact, or loose mounting hardware.
- Check terminal blocks and field wiring for oxidation or looseness.
- Inspect the magnetic pickup circuit for proper signal quality.
- Verify the actuator wiring and mechanical linkage.
- Check all adjustment potentiometers for smooth operation.
- Confirm the selected speed range before commissioning.
- Review droop and rated-speed settings after replacement.
- Keep the controller free from excessive vibration, moisture, and conductive contamination.
- Use appropriate ESD precautions when handling the internal PCB.
- Record the complete model, part number, revision, and existing settings before replacing a controller.
❓ FAQ
Q1. What is the Woodward 9907-014?
It is a low-voltage, forward-acting Woodward 2301A electronic speed control used for regulating diesel/gas engines and steam/gas turbines.
Q2. What supply voltage does the 9907-014 use?
The Woodward part-number table identifies the 9907-014 as a low-voltage model operating from a 10–40 VDC supply.
Q3. What is the difference between the 9907-014 and 9907-015?
The 9907-014 is the low-voltage version, while the 9907-015 is the corresponding high-voltage forward-acting standard speed-control model.
Q4. What engines can the 2301A control?
It is designed for diesel and gas engines as well as steam and gas turbines used as prime movers.
Q5. Does the 2301A support load sharing?
Yes. The 2301A can operate in isochronous mode with Woodward load-sharing systems and can also operate in droop mode for parallel-generator applications.
Q6. What speed ranges are available?
The 2301A supports switch-selectable ranges from 500–1500 Hz up to 4000–12,000 Hz, depending on the system configuration.
Q7. Is this a forward-acting controller?
Yes. The 9907-014 is identified as a standard forward-acting 2301A speed-control model.
Q8. Can I directly replace another 2301A?
Not necessarily. Supply voltage, acting direction, actuator characteristics, speed range, wiring, and load-sharing configuration must all match.
Q9. What does Rev. F mean?
Rev. F identifies the hardware revision of the specific unit. When replacing an installed controller, the complete part number and revision should be recorded for compatibility and maintenance purposes.
Q10. What should be checked before ordering?
Confirm 2301A, 9907-014, Rev. F, low-voltage supply requirements, forward-acting configuration, actuator compatibility, speed range, and existing system wiring.
🔗 Recommended Related Woodward Models
- Woodward 2301A 9907-015 Speed Control
- Woodward 2301A 9907-016 Speed Control
- Woodward 2301A 9907-017 Speed Control
- Woodward 2301A 9905-131 Speed Control
- Woodward 2301A 9905-132 Speed Control
- Woodward 2301A 9905-133 Speed Control
- Woodward 2301A 9905-134 Speed Control
- Woodward 2301A 9905-135 Speed Control
- Woodward 2301A 9905-136 Speed Control
- Woodward 2301A 9907 Series Load Sharing & Speed Control
📝 Product Summary
The Woodward 2301A 9907-014 Rev. F is a low-voltage, forward-acting electronic speed controller for diesel and gas engines, steam and gas turbines, and generator prime movers. With isochronous and droop operating capability, selectable speed ranges, and proportional actuator control, it is suitable for generator-set and industrial engine control systems. Verify the complete electrical and actuator configuration before using this unit as a replacement.
