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Product Introduction
The Woodward 9907-005 Master Synchronizer and Load Control Module is a high-performance, microprocessor-based unit designed for automatic synchronizing and load control in complex power generation systems. It plays a critical role in generator set systems where safe and efficient synchronization, paralleling, and load sharing are required.
As a Master Synchronizer, the 9907-005 matches frequency, voltage, and phase angle between an incoming generator and the bus before breaker closure. Once synchronized, its load control functionality enables balanced power distribution among generators or between a generator and utility grid. This functionality makes it ideal for use in critical infrastructure, including industrial power systems, marine vessels, power stations, and data centers.
The module is part of the SPM-D family, a reliable line of synchronizing products by Woodward, known for robust construction, advanced control capabilities, and seamless integration with Woodward governors, actuators, and power management systems.
Product Specifications
| Parameter | Details |
|---|---|
| Model Number | 9907-005 |
| Product Type | Master Synchronizer with Load Control |
| Control Type | Microprocessor-Based |
| Voltage Input Range | 90–150 VAC, 50/60 Hz |
| Frequency Range | 45–65 Hz |
| Phase Angle Matching | Automatic, ±10° accuracy |
| Voltage Matching | ±5% |
| Frequency Matching | ±0.2 Hz |
| Load Control Mode | Isochronous Load Sharing, Base Load, and Peak Shaving Modes |
| Power Supply | 18–32 VDC |
| Communication Interface | Hardwired; no digital protocol |
| LED Indicators | Generator Ready, Breaker Closed, Sync OK, etc. |
| Protection Features | Breaker Fail Alarm, Out-of-Sync Protection |
| Isolation | Galvanic Isolation for Inputs and Outputs |
| Mounting Type | Panel Mount |
| Enclosure Type | Metal with Conformal Coating |
| Operating Temperature | –40 °C to +70 °C (–40 °F to +158 °F) |
| Storage Temperature | –55 °C to +85 °C (–67 °F to +185 °F) |
| Humidity | Up to 95% RH, Non-condensing |
| Dimensions | 355.6 x 279.4 x 101.6 mm |
| Weight | 4.13 kg |
| Certifications | CE, UL Recognized, CSA, RoHS |
| Compliance Standards | IEEE C37.90, EN 61000-6-2/4, IEC 60255 |
Applications
The Woodward 9907-005 is designed for use in high-reliability power generation and distribution systems:
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Industrial Power Plants: Synchronizes standby or peak load generators to the utility grid or internal bus.
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Marine Power Systems: Ensures stable paralleling of onboard generators during sea and port operations.
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Microgrid and Island Mode Systems: Facilitates seamless transition between grid-tied and off-grid operation.
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Data Centers and Hospitals: Ensures minimal delay in switching emergency backup power systems.
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Oil & Gas Facilities: Synchronizes multiple gensets for continuous and balanced operation in remote areas.
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Utility Switchgear Control: Provides synchronizing interface in utility substations or generator panels.
Advantages
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Accurate Synchronization: Precision phase, frequency, and voltage matching ensures reliable and safe breaker closure.
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Advanced Load Control: Supports multiple control strategies—load sharing, base loading, peak shaving.
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Rugged Construction: Designed for continuous operation in extreme industrial and environmental conditions.
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Failsafe Operation: Built-in protection features safeguard against out-of-sync connection and breaker failure.
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Quick Integration: Compatible with Woodward governors and actuators—no complex programming required.
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User-Friendly Monitoring: LED indicators and simple front panel controls aid diagnostics and local operation.
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Wide Voltage and Frequency Range: Operates in both 50 Hz and 60 Hz systems without modification.
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Maintenance-Free: Solid-state design minimizes the need for periodic servicing.
Frequently Asked Questions (FAQ)
1. What is the main function of the 9907-005?
It provides automatic synchronization and load control for generator sets connecting to a power bus or grid.
2. Can it handle multiple generator units?
The 9907-005 handles synchronization of one unit at a time. Multi-unit control requires supervisory systems.
3. Does it support real-time communication protocols like Modbus or Ethernet?
No, this model uses traditional hardwired interfacing—ideal for robust, low-latency control.
4. Is it suitable for outdoor environments?
With proper enclosure, it can be installed in outdoor-rated panels, especially for harsh industrial conditions.
5. What types of load control modes are supported?
Isochronous Load Sharing, Base Load, and Peak Shaving are supported.
6. Can I use it in a 60 Hz and 50 Hz system?
Yes, it operates across 45–65 Hz and adapts automatically to frequency variations.
7. Is there a display or HMI integrated?
No screen is included. Status is communicated via LED indicators and external interface.
8. How is configuration done?
Settings are typically configured through DIP switches and adjustment pots on the unit.
9. What happens if synchronization fails?
The unit includes breaker fail alarms and out-of-sync lockout mechanisms for protection.
10. Can it be mounted on DIN rail?
No, it is intended for panel-mount installation with screw-in fasteners.
Related Models from the Same Series
| Model | Description |
|---|---|
| 9907-004 | SPM-D10 Synchronizer without Load Control |
| 9907-014 | Generator Control with Enhanced Load Sharing |
| 9907-167 | ProAct Digital Plus with Synchronizer Interface |
| 9905-940 | SPM-D Synchronizer, Basic Version |
| 9905-941 | SPM-D Synchronizer with Load Control |
| 9905-946 | SPM-D Master Synchronizer + Load Control |
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