Description
🔹 Product Overview
The WOODWARD 2301A 9906-061 is an electronic Load Sharing and Speed Control unit designed for prime-mover speed regulation and generator load sharing. The 2301A family is used with diesel or gasoline engines as well as steam or gas turbines. During parallel generator operation, the load-sharing section helps distribute generator load proportionally between operating units.
The 2301A control works as part of a governor system together with a speed-sensing device, actuator, and the associated generator load-measuring equipment. It can operate in isochronous mode and supports droop operation for parallel-generator applications.
📊 Technical Data
| Parameter | Value |
|---|---|
| Brand | WOODWARD |
| Model | 2301A |
| Part Number | 9906-061 |
| Revision | Rev. E |
| Series | 2301A Load Sharing & Speed Control |
| Product Name | Load Sharing and Speed Control |
| Product Type | Electronic Governor / Generator Control |
| Application | Diesel, Gas, Steam or Gas-Turbine Prime Movers |
| Control Modes | Isochronous / Droop |
| Construction | Sheet-Metal Chassis with Single PCB |
| Speed Sensing | Magnetic Pickup / Frequency Signal |
| Condition | Used |
⚙️ Control Functions
The 2301A performs two primary functions: speed control and load sharing. The speed-control section compares the sensed prime-mover speed with the selected reference and generates the actuator command required to maintain the desired operating speed.
For generator paralleling, the load-sharing section monitors generator load and provides the control signal needed to share load between two or more generators. This makes the 2301A suitable for generator sets operating in parallel rather than only for standalone speed regulation.
🔌 System Integration
A typical 2301A installation includes:
- Speed-sensing device or magnetic pickup
- 2301A electronic speed control
- Proportional actuator
- Generator current and potential transformers where load sharing is required
- External power supply
- Optional Woodward load-sharing equipment or synchronizing equipment
Woodward documentation specifies multiple 2301A variants with different supply-voltage, actuator-output, speed-range, and forward/reverse-acting configurations. Therefore, the 9906-061 identification should be matched directly to the existing installation rather than selecting a replacement solely by the “2301A” family name.
🔧 Installation & Maintenance Notes
- Verify the complete part number 9906-061 and revision before replacement.
- Confirm the control’s supply and actuator configuration against the original unit.
- Check the magnetic-pickup wiring and speed-signal frequency.
- Inspect terminal connections for oxidation, looseness, or damaged wiring.
- Verify current-transformer and potential-transformer connections when load sharing is used.
- Check the selected speed range before commissioning.
- Perform an engine overspeed protection check before normal operation.
- Carry out the manufacturer’s startup and adjustment procedure after installation.
⚠️ Safety Note
Incorrect speed-range or governor settings can result in improper engine operation or overspeed. Woodward specifically warns that the correct speed range must be selected and that an independent overspeed shutdown device should protect the prime mover.
❓ FAQ
Q1: What is the Woodward 2301A 9906-061 used for?
It is used for electronic prime-mover speed control and generator load sharing.
Q2: Can it control diesel generators?
Yes. The 2301A family is designed for prime movers including diesel and gasoline engines, as well as steam and gas turbines.
Q3: Does the 2301A support generator paralleling?
Yes. Its load-sharing function is designed to help generators operating in parallel share load proportionally.
Q4: What is the difference between isochronous and droop operation?
Isochronous operation maintains constant speed under changing load, while droop operation provides a speed-versus-load characteristic useful for parallel operation and load sharing.
Q5: Is every 2301A interchangeable with 9906-061?
No. The 2301A family contains multiple variants with different supply, actuator, speed-range, and application configurations. The complete part number must be verified before substitution.
Q6: What should be checked before installing a replacement?
Confirm the part number, revision, power supply, actuator requirements, speed-sensing configuration, speed range, generator CT/PT wiring, and load-sharing arrangement.
⭐ 10 Related WOODWARD Models
- WOODWARD 2301A 9905-131
- WOODWARD 2301A 9905-132
- WOODWARD 2301A 9905-133
- WOODWARD 2301A 9905-134
- WOODWARD 2301A 9905-135
- WOODWARD 2301A 9905-136
- WOODWARD 2301A 9905-137
- WOODWARD 2301A 9905-138
- WOODWARD 2301A 9907-014
- WOODWARD 2301A 9907-015
