Woodward 9905-144 Load Sharing and Speed Control | Technical Manual & Spec Guide
1. General Description
The Woodward 9905-144 is a specialized electronic control module engineered for precision speed governing and load sharing in power generation systems. Operating seamlessly within Woodward's established 2301A-compatible control architecture, it provides reliable closed-loop regulation, stable frequency control, and robust performance to ensure optimal synchronization and high availability across industrial prime movers.
2. Technical Specifications
Defining hardware parameters is essential for system integration and device selection. The technical specifications for the Woodward 9905-144 are outlined below:
Parameter Item | Technical Data |
Manufacturer | Woodward |
Part Number | 9905-144 |
Product Type | Load Sharing & Speed Control |
Series Architecture | 2301A Load Sharing and Speed Control Series |
Input Voltage | Low-voltage model, 20–40 VDC |
Actuator Current | 0–200 mA |
Idle Range | Down to 55% of rated speed |
Environmental Range | Industrial-grade standard for harsh operating conditions |
Enclosure Rating | Ruggedized sheet-metal frame structure |
Product Condition | 100% Brand New Original with a 12-month warranty |
3. Key Features & Industrial Benefits
High-Precision Control: Utilizes advanced sensor and actuator loops to deliver stable frequency regulation under ISOCH and DROOP modes, ensuring proportional active power sharing across parallel generator sets.
Rugged Environmental Reliability: Built within a durable sheet-metal housing to withstand heavy mechanical vibration, wide temperature fluctuations, and severe electromagnetic interference in industrial plants.
Integrated Safety & Sequencing: Features complete start-stop transition control logic. Integrates seamlessly with external overspeed shutdown devices to protect prime movers from runaway conditions.
4. Industrial Applications
The Woodward 9905-144 is deployed across critical infrastructure sectors:
Power Generation & Utilities: Applied in diesel, gas, and steam turbine generator sets for automated grid synchronization, speed governing, and multi-unit load balancing.
Oil & Gas Operations: Utilized in compressors, pump stations, and drilling rig power management systems to satisfy strict reliability demands.
Marine & Offshore Systems: Manages auxiliary engine and main propulsion speeds under dynamic maritime operating conditions.
5. Installation & Procurement Guidelines
Safety & MPU Adjustments: Isolate all power prior to wiring. When utilizing a magnetic pickup (MPU) for speed sensing, maintain a precise sensor-to-gear gap of 0.010 to 0.040 inches. Utilize shielded twisted-pair cables for all control signals to eliminate ground loops.
Supply Chain Assurance: We supply 100% brand-new, factory-sealed hardware backed by strict quality control standards. In-stock orders are processed and dispatched within 24 to 48 hours via international air freight to minimize enterprise downtime.
6. Frequently Asked Questions (FAQ)
Q: Are these units brand new and original?
A: Yes, we supply 100% brand-new, factory-sealed Woodward control components supported by a 12-month warranty.
Q: What is the standard delivery lead time?
A: In-stock items are typically processed and dispatched within 24 to 48 hours via expedited international courier services.
Q: Does this controller support an SPM synchronizer?
A: Yes, the 9905-144 features dedicated connection terminals for SPM (Speed and Phase Matching) integration using properly grounded shielded cabling.
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