Description
⚙️ Product Overview
The WOODWARD 9907-019 is a low-voltage 2301A electronic load sharing and speed control designed for generator prime movers driven by diesel or gasoline engines, as well as steam or gas turbines.
This model operates from a 20–40 VDC supply and provides speed regulation and load-sharing control for generator applications. The 2301A platform can operate in either isochronous or droop mode, making it suitable for single-generator operation and parallel generator systems.
The 9907-019 is a reverse-acting, single-actuator model with a 0–200 mA actuator output. It is also a CE-approved model within the 9907 series.
🔧 Key Features
- Woodward 2301A electronic load sharing and speed control
- Part number 9907-019
- Low-voltage 20–40 VDC operation
- Reverse-acting control configuration
- Single proportional actuator
- 0–200 mA actuator current range
- CE-approved model
- Isochronous and droop operating modes
- Suitable for parallel generator applications
- Switch-selectable speed ranges
- Front-accessible adjustment potentiometers
- Designed for diesel, gasoline, steam, and gas turbine prime movers
- Load sensing through generator current/potential transformer circuits
📊 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Woodward |
| Model | 2301A |
| Part Number | 9907-019 |
| Revision | Rev.H |
| Series | 9905/9907 Series |
| Product Name | Low Voltage Load Sharing & Speed Control |
| Application | Generator Speed Regulation & Load Sharing |
| Operating Voltage | 20–40 VDC |
| Actuator Output | 0–200 mA, Single Actuator, Reverse Acting |
| Weight | Approx. 1.8 kg |
⚡ Speed & Load Control
The 2301A control monitors prime-mover speed through a speed-sensing device and controls the actuator to maintain the required engine or turbine speed.
For parallel generator operation, the load-sharing section measures the load carried by the generator and adjusts the prime mover so that generators operating together can share load proportionally.
Selectable speed ranges include:
- 500–1,500 Hz
- 1,000–3,000 Hz
- 2,000–6,000 Hz
- 4,000–12,000 Hz
The standard factory speed range is 2,000–6,000 Hz. The correct range must be selected for the specific speed sensor and prime mover application.
🏭 Typical Applications
- Diesel generator sets
- Gas engine generator sets
- Steam turbine generator systems
- Gas turbine generator systems
- Parallel generator installations
- Standby and prime-power generation
- Isolated bus generator systems
- Base-loaded generator applications
- Industrial power generation
- Marine and auxiliary generator systems
🔄 Operating Modes
Isochronous Mode:
Used when constant prime-mover speed is required, including single-generator operation or multiple generators operating with an appropriate Woodward load-sharing system on an isolated bus.
Droop Mode:
Used for speed control as a function of load, particularly when operating a generator on an infinite bus or paralleling multiple prime movers.
Reverse-Acting Operation:
The 9907-019 is designed for reverse-acting applications. Because actuator behavior during loss of speed signal or control voltage is application-dependent, the existing governor configuration and approved Woodward procedures should be reviewed before commissioning or replacement.
🛠️ Installation & Maintenance
- Confirm the part number — Verify 9907-019 and the revision letter against the existing control.
- Check the power supply — Confirm that the installation provides the required 20–40 VDC low-voltage supply.
- Verify actuator type — The 9907-019 is configured for a single 0–200 mA actuator.
- Check speed-sensor wiring — Confirm the magnetic pickup or other speed-sensing device and shielded signal wiring.
- Verify CT/PT connections — Load-sharing circuits must correspond to the generator protection and metering arrangement.
- Confirm operating mode — Check whether the generator is configured for droop or isochronous operation.
- Verify speed range — Select the appropriate frequency range for the actual prime-mover speed and sensor characteristics.
- Inspect potentiometers — Record existing adjustment positions before making changes during troubleshooting or replacement.
- Perform functional testing — Check speed regulation, actuator response, load sharing, and generator paralleling functions before returning the system to service.
- Protect the electronics — Handle the control as an electronic circuit-board assembly and follow appropriate anti-static handling practices during maintenance.
❓ Common Questions & Answers
Q1: What is the Woodward 9907-019 used for?
A: It is a 2301A electronic control used for generator prime-mover speed regulation and load sharing.
Q2: Is the 9907-019 a low-voltage model?
A: Yes. It is designed for a 20–40 VDC supply.
Q3: What type of actuator does 9907-019 use?
A: It is a single-actuator model with a 0–200 mA actuator current range.
Q4: Is 9907-019 forward or reverse acting?
A: The 9907-019 is a reverse-acting model.
Q5: Can it be used for generator paralleling?
A: Yes. The 2301A platform supports load sharing during parallel operation of generators.
Q6: Does it support droop and isochronous operation?
A: Yes. The 2301A platform provides both operating modes for different generator control arrangements.
Q7: What speed ranges are available?
A: The selectable ranges are 500–1,500 Hz, 1,000–3,000 Hz, 2,000–6,000 Hz, and 4,000–12,000 Hz.
Q8: Can any 2301A replace a 9907-019?
A: Not necessarily. Voltage range, actuator current, forward/reverse action, actuator configuration, speed range, load-sharing arrangement, and application wiring must all be checked 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 Load Sharing & Speed Control
- Woodward 9905-021 2301A Load Sharing & Speed Control
- Woodward 9905-022 2301A Load Sharing & Speed Control
- Woodward 9905-023 2301A Load Sharing & Speed Control
- Woodward 9905-028 2301A Load Sharing & Speed Control
- Woodward 9905-029 2301A Load Sharing & Speed Control
📦 Spare-Parts Recommendation
For generator control systems using the Woodward 2301A platform, keeping a correctly configured spare control can reduce downtime during governor or speed-control failures. Before purchasing a replacement, compare the complete Woodward part number, revision, actuator configuration, voltage range, speed-sensor range, and existing load-sharing scheme.
