中文版
Phone: 
Email: 
WhatsApp: Description
Woodward 9907-018 – 2301A Load Sharing and Speed Control
Product Overview
The 9907-018 is a Woodward 2301A electronic load-sharing and speed-control unit designed for prime movers used in generator and mechanical-drive applications. It controls the speed and load of diesel, gasoline, and gas engines as well as steam and gas turbines. This model is a low-voltage version, operating from a 20–40 VDC supply, with a forward-acting 0–200 mA actuator output for a single actuator. It supports isochronous and droop control modes and provides selectable speed-frequency ranges for different engine or turbine applications. The unit is housed in a metal chassis with front-accessible adjustment controls, making it well suited to legacy governor systems where exact replacement is important. Woodward documentation identifies the 9907-018 as a CE-approved model.
Technical Specifications — 9907-018
| Parameter | Value |
|---|---|
| Product Model | 9907-018 |
| Manufacturer | Woodward |
| Product Type | Load Sharing and Speed Control |
| Series | 2301A |
| Supply Voltage | 20–40 VDC |
| Power Requirement | Minimum 15 W supply capacity |
| Actuator Output | 0–200 mA |
| Actuator Configuration | Single |
| Control Action | Forward acting |
| Control Modes | Isochronous / Droop |
| Speed Ranges | 500–1,500 / 1,000–3,000 / 2,000–6,000 / 4,000–12,000 Hz |
| Deceleration Ramp | Included |
| Chassis | Sheet metal |
| Approx. Dimensions | 387 × 181 × 64 mm |
| Approx. Weight | 1.8 kg |
| Operating Temperature | -40°C to +85°C |
| Typical Applications | Engines and steam/gas turbines |
| Certification | CE |
The official Woodward manual confirms the 20–40 VDC supply range, 0–200 mA actuator output, single forward-acting actuator configuration, and selectable speed ranges.
Woodward 9907-018
Key Features and Benefits — 9907-018
- Electronic speed and load control for prime movers.
- Low-voltage 20–40 VDC power supply.
- 0–200 mA forward-acting actuator output.
- Single-actuator configuration.
- Isochronous operation for constant-speed applications.
- Droop operation for load sharing between generator sets.
- Selectable frequency ranges for different speed-sensing requirements.
- Deceleration-ramp function.
- Metal chassis suitable for panel or cabinet installation.
- CE-approved configuration for applicable installations.
The actuator configuration deserves particular attention during replacement. Woodward lists 9907-019 as the reverse-acting counterpart, so the two should not be treated as interchangeable without checking the governor application and actuator behavior.
Related Models
9907-019: Reverse-acting version with a 0–200 mA single-actuator output.
9907-023: Forward-acting low-voltage model in the same 2301A family with a different control configuration.
9907-024: Reverse-acting counterpart to the 9907-023 configuration.
9905-028: Related 2301A forward-acting model with a 0–200 mA actuator output and a different product configuration.
Installation and Maintenance — 9907-018
Before installation, verify the 20–40 VDC supply, actuator coil requirements, speed-sensor frequency range, forward-acting configuration, droop settings, and existing governor wiring. Record the potentiometer positions before removing the original controller.
During maintenance, inspect the actuator circuit, speed-sensor wiring, power supply, terminal connections, and load-sharing circuitry. Verify the speed signal independently before adjusting the controller. Personally, I would confirm actuator direction first; an incorrect forward/reverse configuration can produce an unexpected fuel or steam-valve response.
The 2301A should not be considered the sole overspeed protection device. An independent shutdown system should remain available for prime-mover protection.
Product Warranty — 9907-018
Warranty coverage should be confirmed according to the supplied condition, such as new surplus, refurbished, repaired, or tested-used. For critical turbine or generator-control spares, procurement records should include the complete part number, revision, inspection status, serial number where available, and warranty period.
When sourcing the Woodward 9907-018, verify the 20–40 VDC supply, 0–200 mA actuator output, single forward-acting configuration, speed-sensing range, and existing governor wiring before purchase.
