WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Specification Value |
|---|---|
| Catalog Part Number | 9907-018 |
| Control Family | Woodward 2301A Series |
| Power Supply Operating Range | High Voltage Model: 85 to 132V AC (45–440 Hz) or 90 to 150V DC |
| Power Consumption | 15 W nominal |
| Speed Sensor Input | Magnetic Pickup (MPU) signal: 1.0 to 30 Vrms |
| Actuator Output Signal | 0 to 200 mA DC into a 30 to 35 Ω actuator coil |
| Control Action | Forward Acting (Increasing signal increases fuel deliver) |
| Operating Modes | Isochronous speed control or Droop load sharing (0 to 10%) |
| Ambient Operating Temperature | −40°C to +70°C (−40°F to 158°F) |
| Enclosure Rating | Metal chassis, surface mount with protective cover |
4. Product Introduction & Supply Chain Strategy
The Woodward 2301A (PN: 9907-018) is an industry-standard electronic load sharing and speed control unit engineered for precision governing of engines and turbines driving mechanical loads or electrical generators. It continuously measures engine speed via a magnetic pickup (MPU) and generator load via external current and potential transformers (CTs/PTs), modulating fuel actuator current to maintain exact operating frequency or proportional load sharing.
This unit is a Brand New Surplus item. It is not used, not pulled from a decommissioned power plant, and not refurbished. All internal potentiometers, power supply circuitry, and speed-sensing components undergo verification to ensure OEM-level governing accuracy.
Securing the 9907-018 as New Surplus provides an immediate replacement path for mission-critical power generation installations. When an engine governor fails, the generator cannot maintain stable frequency or parallel load sharing, creating severe power grid instability. Purchasing verified New Surplus avoids long manufacturer lead times while ensuring stable governing performance without the drift risks associated with worn potentiometer tracks or aged electrolytic capacitors on used units.
5. Installation & Configuration Guide
High Voltage & Engine Overspeed Safety Hazard
The 9907-018 operates on high supply voltages (up to 150V DC / 132V AC). Always verify supply power is isolated before wiring. Ensure an independent mechanical overspeed shutdown device is functional prior to initial engine start.
1
Safety Isolation & Mounting
Prerequisite
1.Safety Isolation & Mounting:Prerequisite.
Isolate main AC/DC supply power and engine start circuits. Surface-mount the 2301A chassis vertically on a clean enclosure panel inside the switchgear or control cabinet away from direct heat sources.
2
Signal & Actuator Terminations
Wiring Setup
2.Signal & Actuator Terminations:Wiring Setup.
Connect the magnetic pickup (MPU) using shielded twisted-pair cable to terminals 11 & 12 (ground shield at control end only). Connect the governor actuator leads to terminals 2 (+) & 3 (-). Connect high-voltage operating power to terminals 15 & 16.
3
Generator Load Sensing
CT/PT Connections
3.Generator Load Sensing:CT/PT Connections.
Connect generator phase potential transformers (PTs) and current transformers (CTs) to the dedicated load sensing terminals according to 3-phase 3-wire or 4-wire system diagrams.
4
Initial Potentiometer Setup
Potentiometer Adjustment
4.Initial Potentiometer Setup:Potentiometer Adjustment.
Set Gain and Stability potentiometers to mid-position (50%). Set Rated Speed adjustment to minimum. Turn the Droop potentiometer fully counterclockwise if operating in Isochronous mode.
5
Engine Start & Speed Trim
Verification
2301A 9907-018
2301A 9907-018
5.Engine Start & Speed Trim:Verification.
Start the prime mover using the local manual control. Gradually adjust the Rated Speed potentiometer until nominal operating frequency (50 Hz or 60 Hz) is reached. Fine-tune Gain and Stability settings to eliminate speed hunting under sudden load changes.
6. System Configuration & Maintenance Notes
The 2301A 9907-018 operates as a standalone analog control unit:
- Forward Acting Configuration: This model is designed for forward-acting systems where an increase in output current from the control results in an increase in fuel flow.
- Paralleling Operations: When generator sets operate in parallel, connect the load-sharing bus terminals across all 2301A units to enable automatic proportional load distribution.
- Shielding Protocol: Magnetic pickup (MPU) wires must be continuously shielded and routed separately from high-voltage AC cables to prevent electromagnetic noise corruption of the speed signal.
7. Frequently Asked Questions (FAQ)
Q: Is this Woodward 2301A 9907-018 unit brand new or refurbished?
A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned power plant, and not refurbished. All internal circuitry undergoes full functional verification prior to dispatch.
Q: What power supply voltage is required for part number 9907-018?
A: The 9907-018 is a high-voltage model accepting 85 to 132V AC or 90 to 150V DC. (Low-voltage 24V DC versions carry different catalog part numbers, such as 9907-014).
Q: Can this unit handle both single-generator and parallel-generator operations?
A: Yes. It supports single-unit Isochronous speed regulation as well as multi-generator parallel operation using Droop or connected Load Sharing Bus modes.
Q: What warranty applies to this New Surplus control module?
A: We back this speed control unit with a full 1-year functional replacement warranty from the date of shipment to ensure complete operational confidence.
