Description
Product Overview
The Woodward 8406-113 is an EGCP-3 Engine Generator Control Package unit configured for load-sharing applications. It is intended for generator sets operating in parallel on a common electrical bus, where coordinated engine control and generator-load management are required. Rather than serving as a general-purpose PLC, the 8406-113 is part of a dedicated generator-control architecture designed to work with compatible EGCP-3 equipment. Its local display and keypad provide operators with access to operating status, configuration settings, and alarm information.
For maintenance and commissioning teams, the Woodward 8406-113 provides a local interface for reviewing engine, generator, synchronizer, load, power-factor/reactive-power, I/O, and sequence status. Configuration is performed through the first-time startup menu and supported access methods; the documented procedure restricts changes to certain startup settings while the engine is running. Additional configuration access may be available through Watch Window software using the ServLink serial connection. Before replacing a field unit, verify the existing control’s revision, application software, wiring, and system configuration. Matching the model number alone does not establish full interchangeability.
The Woodward 8406-113 is specified for an 18–32 VDC supply and an operating ambient range of −20°C to +70°C. Its speed-bias output can be configured for supported signal types, but the output and connected speed-control interface must be confirmed for the actual installation. In a multi-generator plant, incorrect settings or incompatible control revisions can affect load sharing and operating sequences. Confirm the application requirements and the unit’s revision before commissioning a replacement.
Product Introduction (Non-Templated)
Parallel generator systems depend on coordinated engine response, load distribution, and reliable access to operating status. The Woodward 8406-113 brings these functions into the EGCP-3 load-sharing control architecture, with dual LCD displays and a local keypad for field monitoring.
For a replacement project, the main checks are not limited to the enclosure and part number. Confirm the control revision, application software, speed-bias signal, and existing generator-control arrangement before returning the unit to service.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 8406-113 |
| Manufacturer | Woodward |
| Product Family | EGCP-3 Engine Generator Control Package |
| Model Configuration | Load Sharing (LS) |
| Product Type | Engine-generator control unit |
| Rated Input Voltage | 18–32 VDC |
| Operating Temperature | −20°C to +70°C |
| Storage Temperature | −30°C to +80°C, as reported in available technical listings |
| Speed-Bias Output Options | 4–20 mA, 0–5 V, PWM, or ±3 V |
| Local Interface | Keypad and dual backlit LCD displays |
| Serial Interfaces | Three serial ports reported; verify port functions and pinout against the applicable manual |
| Dimensions | Approximately 282 × 359 × 135 mm (H × W × D) |
| Weight | Approximately 4.3 kg |
| Enclosure Rating | NEMA 4 when properly installed, as reported in product specifications |
| Configuration Software | Watch Window via ServLink, where supported |
| Application Software | Revision-dependent; verify against the unit’s revision and application |
| Manufacturer Status | Reported discontinued; confirm current service and replacement options |
Engineering note: The values above are reference specifications, not a substitute for the unit-specific manual. Confirm connector assignments, signal scaling, protection requirements, and firmware/software compatibility before installation.
Related Products
These models belong to related Woodward generator-control equipment families. They are not confirmed drop-in replacements for the 8406-113.
- 8406-114 — EGCP-3 mains-control model used for coordination among EGCP-3 controls and supervision of utility-mains paralleling. Its control role differs from the 8406-113 load-sharing unit.
- 8406-120 — Woodward EGCP-2 series controller. Consider only when servicing an existing EGCP-2 installation; do not assume compatibility with hardware or configuration.
- 8406-121 — Woodward generator-control model associated with coordinated operation of multiple generator sets. Verify the system architecture and model-specific functions before selecting it for a project.
- 8406-113 Revision R — A documented revision of the 8406-113 control. Woodward’s application note describes an upgrade path from certain earlier revisions and software versions. Confirm the starting revision and approved upgrade procedure.
- 5418-144M.SCP — Application software identified in Woodward’s revision note for upgrading eligible 8406-113 controls to Revision R. It is software, not a replacement control unit.
8406-113
Frequently Asked Questions
1. What is the Woodward 8406-113 used for?
It is an load-sharing control unit used in generator systems where multiple generator sets operate in parallel. It provides local monitoring and configuration access and supports generator-control functions within the compatible system architecture.
2. Can I replace an existing 8406-113 with another unit carrying the same part number?
Potentially, but verify the hardware revision, application software, wiring, configuration, and output signal requirements first. The manufacturer’s revision history documents changes across the product’s life, so identical base model numbers alone are not sufficient proof of interchangeability.
3. Can I hot-swap this controller while the generator is running?
Do not assume hot-swapping is permitted. The available documentation does not establish that the 8406-113 can be removed or installed under power without risk. Follow the applicable Woodward manual and site shutdown procedure, and assess the impact on generator control and load sharing before disconnecting the unit.
4. Does the 8406-113 support firmware v3.1?
The reference material identifies application software in the 5418-144 series, including revision M for control Revision R. It does not establish that “firmware v3.1” is a valid or compatible version designation for this model. Check the installed software identifier and revision against the correct manual before making an upgrade decision.
5. What supply voltage does the Woodward 8406-113 require?
The published rated input range is 18–32 VDC. Verify supply polarity, wiring, grounding, and voltage at the controller terminals during commissioning.
6. Does the 8406-113 require programming before operation?
The controller requires appropriate system configuration. Documented setup includes a first-time startup menu, and additional configuration access may be available through Watch Window using ServLink. The correct settings depend on the generator, engine speed control, sensing arrangement, and parallel-operation strategy. Do not assume a replacement arrives with the configuration needed for your plant.
7. How can I verify authenticity and condition before purchase?
Request clear photographs of the nameplate, full part number, hardware revision, serial number, connectors, and packaging where applicable. Ask for the reported test scope, any repair history, and written warranty terms. For a used or refurbished unit, establish whether the displays, keypad, power-up behavior, communication ports, and required control functions have been tested. Verify all details against the physical unit rather than relying on a generic listing.
