The WOODWARD 8406-113 Rev P EGCP-3 (Engine Generator Control Package) is a highly integrated, microprocessor-based control designed for use with a variety of gas or diesel engine-generator sets. This “LS” (Load Sense) variant is specifically engineered to handle complex power management tasks, including automatic sequencing, synchronization, and dead-bus closing in both standalone and parallel utility applications.
Product Overview
The EGCP-3 8406-113 is a comprehensive solution that replaces multiple discrete components—such as the engine governor, voltage regulator interface, and synchronizer—with a single, robust platform. The Revision P update offers enhanced firmware stability and improved communication protocols for modern industrial networks. It provides the high-level logic required for sophisticated multi-unit load sharing and utility tie-in control.
Technical Specifications (Datasheet)
| Feature | Specification |
| Model Number | 8406-113 |
| Revision | P |
| Series | EGCP-3 LS (Load Sense) |
| Control Power | 18–40 VDC (24 VDC Nominal) |
| AC Sensing Voltage | 100–480 VAC (3-Phase, 3 or 4 Wire) |
| Current Sensing | 5A or 1A CT Secondaries |
| Speed Sensing | Magnetic Pickup (MPU) 1.0 to 30.0 Vrms |
| Communication | RS-422, RS-485, and Ethernet Capabilities |
| Analog I/O | Configurable for Bias Outputs (±3 VDC, 0-5 V, etc.) |
| Operating Temp | -20°C to +70°C |
Key Technical Features
- Automatic Synchronization: Features internal phase-matching and slip-frequency synchronization for seamless breaker closure.
- Real Power (kW) & Reactive Power (kVAR) Control: Automatically balances both real and reactive loads between multiple generators in a parallel lineup.
- Engine Protection: Integrated monitoring for overspeed, underspeed, oil pressure, and coolant temperature, with configurable alarm and shutdown thresholds.
- Network Connectivity: Supports Modbus RTU and other industrial protocols, allowing for full integration into HMI or SCADA systems for remote monitoring.
Country of Origin
Country of Origin: USA (Woodward, Inc.)
Primary Application Fields
The Woodward 8406-113 is a standard in high-uptime power environments:
- Data Centers: Managing emergency backup power and seamless transitions during utility failure.
- Peak Shaving: Automatically starting and paralleling generators to reduce utility costs during peak hours.
- Distributed Generation: Managing microgrids and remote power stations.
- Industrial Facilities: Coordinating power for large-scale manufacturing plants with onsite generation.
Operating Instructions
- Mounting: Install the EGCP-3 in a central control panel. Ensure the unit is properly grounded and that there is adequate clearance for terminal access.
- AC Inputs: Wire the generator and bus PTs/CTs according to the Revision P wiring diagram. Warning: Ensure CT secondaries are never open-circuited while primary current is flowing.
- Communication Setup: Configure the baud rate and Node ID via the front-panel keypad or the Woodward Watch Window software for network integration.
- Tuning: Use the PC-based configuration tool to set the PID dynamics for the speed and voltage bias outputs to match the specific engine-generator response.
- Functional Test: Perform a “Dry Run” synchronization test (with the breaker trip circuit disabled) to verify that the phase and frequency matching logic is operating correctly.



