The Woodward 9907-838 is a precision-engineered module for generator control applications. It facilitates advanced load sharing functions, specifically isochronous and droop modes. Consequently, this module ensures stable and efficient power distribution when paralleling multiple generator sets.
Core Functionality and Input Specifications
This module requires a primary 3-phase PT input within the 95-130 Vac range for accurate measurement. It operates from a standard 18-32 VDC power supply for consistent performance. Furthermore, it integrates seamlessly with Woodward systems via a compatible SPM-A synchronizer sync input.
Physical Dimensions and Environmental Ratings
The 9907-838 features compact dimensions of 273.6mm in width, 214.1mm in depth, and 59.2mm in height. It weighs approximately 3 pounds (1.36 kg) for straightforward panel mounting. Moreover, it operates reliably across a wide temperature range from -40°C to +70°C.
Robust Output and Durability Specifications
The module provides a precise +0.5 to +4.5 Vdc analog output signal for direct speed control. It is designed for harsh environments with a shock resistance rating of up to 40G for 11ms. Additionally, its design assumes installation in a controlled, humidity-free, and dust-free area for optimal longevity.
Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Woodward |
| Model Number | 9907-838 |
| Module Function | Speed Control & Load Sharing |
| Load Sharing Modes | Isochronous, Droop |
| Full Load Condition | 3 to 7 A RMS |
| Power Supply | 18 – 32 VDC |
| 3-Phase PT Input | 95 – 130 VAC |
| Sync Input Compatibility | Woodward SPM-A Synchronizer |
| Output to Speed Control | +0.5 to +4.5 VDC Analog |
| Dimensions (W x D x H) | 273.6 mm x 214.1 mm x 59.2 mm |
| Weight | ~1.36 kg (Approx. 3 lbs) |
| Operating Temperature | -40°C to +70°C (-40°F to 158°F) |
| Shock Resistance | Up to 40G, 11-ms sawtooth pulse |
| Air Quality / Pollution | Degree 2 |
| Installation Environment | Humidity-free, Dust-free area |
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 108 × 70 × 108 mm |
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