中文版
Description
Technical Specifications
| Product Model | **WOODWARD 8440-1706 D** |
| Manufacturer | Woodward, Inc. |
| Product Type | Digital Speed Control Module (Engine Governor) |
| Input Voltage | 18-32 VDC (Wide Range, Isolated) |
| Output Signals | 4-20 mA Analog, PWM (Pulse Width Modulation), RS-485 Modbus |
| Speed Range | 0-10,000 RPM (Configurable) |
| Load Capacity | 5A @ 30 VDC (Solenoid/Actuator Drive) |
| Communication | CANbus (SAE J1939), Modbus RTU, Woodward EasyGEN Protocol |
| Operating Temperature | -40°C to 85°C (Conformal Coating Optional) |
| Certifications | UL 508, CE, ATEX Zone 2, IEC 60068 (Vibration/Shock) |
8440-1706B
Key Features & Advantages
The **WOODWARD 8440-1706 D** is a rugged engine speed governor designed for precision control of diesel/gas engines in critical applications. Its adaptive PID tuning automatically compensates for load changes, maintaining ±0.25% speed regulation accuracy. The module supports dual redundancy with hot-swappable backup modules for fail-safe operation. Integrated diagnostics monitor overspeed, underspeed, and actuator health, triggering alarms via Modbus or relay outputs.
Dynamic load-sharing capabilities enable parallel generator synchronization with <1% load imbalance. Woodward’s ToolKit software provides graphical configuration of droop, acceleration limits, and transient response curves. The “D” variant includes enhanced EMI shielding for operation near VFDs and welding equipment.
Applications
Widely used in **power generation** (standby/prime gensets) for ISO 8528 compliance. **Marine propulsion systems** rely on its CANbus integration for throttle-by-wire control. **Oil & gas** applications include compressor engine control and flare gas recovery. Also deployed in **locomotive engines** and **mining pump drives** requiring MIL-STD-810G shock/vibration tolerance.
Related Products
**Woodward 2301A Load Sharing Module**.
**EasyGEN-3500 Control System**.
**LSM-322 Load Shedding Module**.
Installation & Maintenance
**Installation**: Mount on DIN rail or panel with ≥50 mm clearance for cooling. Use shielded twisted pairs for analog signals; ground at one point. Calibrate speed sensors (magnetic pickup or encoder) via ToolKit’s autoconfiguration wizard. **Maintenance**: Perform annual PID loop tuning with load-step testing. Replace electrolytic capacitors after 7 years. Update firmware using Woodward’s USB Service Adapter (PN 9908-256).
Product Assurance
The 8440-1706 D undergoes 500-hour accelerated life testing at 100% load cycling. Includes a 2-year warranty with 10-year lifecycle support. Complies with ISO 8528-5 transient response and NFPA 110 emergency power standards. Woodward’s Global Service Network offers onsite calibration and legacy system upgrades (e.g., replacing 8232 analog governors).
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