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WOODWARD EGCP-3 8406-113 – Engine Generator Load-Sharing Control
Product Overview
The WOODWARD EGCP-3 8406-113 is a microprocessor-based Engine Generator Control Package configured as the Load Sharing (LS) model. It is designed for generator sets operating in parallel on an isolated bus or alongside a utility mains supply. The controller combines engine start/stop sequencing, generator monitoring, synchronization, load sharing, and control functions within a single platform. Woodward documentation specifies support for isochronous, droop, base-load, and process-control operating modes, with up to 16 generators sharing load in suitable multi-unit configurations. It also provides PT and CT measurement inputs, speed feedback, actuator bias outputs, discrete I/O, analog I/O, and three serial communication ports.
Technical Specifications — EGCP-3 8406-113
| Parameter | Value |
|---|---|
| Product Model | EGCP-3 8406-113 |
| Manufacturer | Woodward |
| Product Type | Engine Generator Control Package |
| Model | LS — Load Sharing |
| Primary Application | Diesel / Gas Generator Sets |
| Power Supply | 18–32 VDC |
| Nominal Supply | 24 VDC |
| Power Consumption | ≤20 W nominal, 22 W maximum |
| PT Inputs | 27–300 VAC |
| CT Inputs | 0–5 AAC RMS nominal; 7 AAC RMS maximum |
| Generator Frequency | 40–70 Hz |
| Magnetic Pickup Input | 100–24,950 Hz |
| Discrete Inputs | 16 |
| Analog Inputs | 4–20 mA / 1–5 VDC |
| Analog Outputs | 4–20 mA |
| Speed Bias Output | ±3 VDC, 0.5–4.5 VDC, PWM, or 4–20 mA |
| Discrete Outputs | 12 × 200 mA low-side drivers |
| Serial Ports | 3 × RS-485 / RS-422 / RS-232 |
| Operating Temperature | -20 to +70 °C |
| Storage Temperature | -40 to +85 °C |
| Dimensions (H×W×D) | Approx. 282 × 359 × 135 mm |
| Weight | Approx. 4.3 kg |
| Enclosure Rating | IP54 when properly installed |
These values are taken primarily from Woodward’s EGCP-3 technical documentation.
WOODWARD EGCP-3 8406-113
Key Features and Benefits — EGCP-3 8406-113
- Load-sharing control for multiple parallel generator sets.
- Supports isochronous, droop, base-load, and process-control operating modes.
- Engine start/stop sequencing and generator monitoring.
- Integrated PT and CT measurement inputs.
- Multiple speed-bias output formats for compatible governor systems.
- Three configurable serial communication interfaces.
- Supports coordinated load sharing for multi-generator installations.
- Front-panel display and keypad provide local monitoring and configuration.
Personally, I would verify the hardware revision and application software before replacing one of these units. Woodward has released software revisions for different 8406-113 hardware revisions, so the physical part number alone does not completely define the installed configuration.
Related Models
8406-114 — EGCP-3 MC model designed as a master/supervisory controller for larger generator systems and utility-parallel applications.
8406-103 — EGCP-3 DR configuration used for related engine-generator control applications.
EGCP-2 — Earlier Woodward engine-generator control platform used for generator sequencing, synchronization, and load management.
505 Series — Woodward digital turbine-control family intended primarily for steam-turbine governing and generator applications.
Installation and Maintenance — EGCP-3 8406-113
Before replacement, record the software revision, generator PT/CT ratios, speed-sensing configuration, governor interface, breaker logic, load-sharing settings, and protection parameters. Verify the 24 VDC supply and all field wiring before energizing the controller.
During maintenance, inspect PT/CT terminals, magnetic-pickup wiring, actuator connections, communication ports, grounding, and enclosure ventilation. After replacement, verify generator voltage and frequency measurements, speed feedback, synchronization, breaker control, governor bias, and load-sharing response. Independent overspeed and emergency shutdown functions should also be tested according to the plant procedure.
Product Warranty — EGCP-3 8406-113
Warranty coverage depends on supplier condition and sales terms. Confirm whether the unit is new old stock, refurbished, repaired, or previously installed, and request serial-number traceability, functional-test records, software/configuration information, and the applicable warranty period.
The WOODWARD EGCP-3 8406-113 is a configuration-sensitive generator controller. For a legacy power-generation system, matching the hardware revision, software revision, and application configuration is essential before replacement.
