9905-377 Woodward Digital Generator Speed Controller 24VDC
Manufacturer: Woodward
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Part Number: 9905-387
Condition：New with Original Package
Product Type: Load Sharing Controllers
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Woodward 9905-377 serves as a high-performance Load Sharing and Speed Control module designed to manage complex power distribution in multi-generator environments. This microprocessor-based unit ensures that each generator in a system carries its proportional share of the load, preventing equipment overstress and maintaining grid frequency stability. We supply this unit as 100% Brand New factory-original stock, providing the high-speed response required for mission-critical industrial, marine, and backup power applications.
Technical Specifications
The 9905-377 integrates versatile power input options with a high-density I/O suite to facilitate seamless plant integration.
| Parameter | Details |
| Manufacturer | Woodward, Inc. (USA) |
| Model / Part Number | 9905-377 |
| Primary Type | Load Sharing and Speed Controller |
| Input Voltage | 90–240 VAC / 20–40 VDC (Universal Support) |
| Analog Inputs / Outputs | 8 Channels (0–10 V / 0–20 mA) |
| Digital Inputs / Outputs | 8 Channels / 8 Channels |
| Operating Temperature | –40 °C to +70 °C |
| Shock Resistance | Rated up to 60 Gs |
| Dimensions | 200 × 150 × 80 mm |
| Weight | 1.85 kg (4.08 lbs) |
Engineering Advantages
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Dynamic Load Balancing: The 9905-377 continuously monitors individual generator outputs and adjusts speed bias signals in real-time. This prevents "load hunting" and ensures that no single generator trips due to an unfair share of the kW demand.
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Exceptional Mechanical Durability: With a 60G shock resistance rating, this module thrives in high-vibration environments such as marine engine rooms and mobile power units where standard PLCs often fail.
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Universal Power Supply: The unit accepts both AC (90–240 VAC) and DC (20–40 VDC) inputs. This versatility allows engineers to standardize on one part number across different sites regardless of local power availability.
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Seamless Woodward Ecosystem Sync: The 9905-377 communicates natively with Woodward speed governors and synchronizers. This unified control architecture reduces commissioning time and simplifies the overall wiring schematic for multi-genset lineups.
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Real-Time Diagnostics: Eight digital output channels provide immediate feedback for alarm status and system health, allowing for rapid troubleshooting via SCADA systems or local indicator panels.
FAQs
Q: Can the 9905-377 operate in a standalone configuration?
A: Yes. While it excels in paralleled systems, it also provides precise speed regulation for single generators in island mode, ensuring a stable frequency regardless of sudden load changes.
Q: Is this module compatible with non-Woodward governors?
A: The 9905-377 utilizes standard 0–10 V and 0–20 mA analog interfaces. It can drive any electronic governor or actuator that accepts these industry-standard bias signals for speed or load offset.
Q: How does the unit handle extreme temperature fluctuations?
A: The industrial-grade internal components operate without derating from –40 °C to +70 °C. This thermal resilience makes it suitable for unheated enclosures in arctic environments or high-heat desert installations.
Q: Does this unit require specialized software for setup?
A: Configuration typically occurs via Woodward's PC-based Toolkit or onboard potentiometers/switches, depending on the specific firmware version. This allows for fine-tuning of gain and stability to match the engine's unique inertia characteristics.