Woodward EGCP-3 (8406-113) – Engine Control & Generator Protection Module | EGCP-3 Platform
The Woodward 8406-113 EGCP-3 is a precision-engineered engine control and generator protection module designed for mission-critical power generation applications. As a cornerstone of Woodward’s EGCP-3 platform, this unit integrates speed governing, load sharing, synchronizing, and comprehensive generator protection into a single, ruggedized controller — eliminating the need for multiple discrete relays and reducing panel complexity for OEMs and system integrators alike.
Product Positioning: Targeted at procurement engineers and system integrators specifying controls for diesel and natural gas gensets in standby, prime, and peak-shaving configurations. The EGCP-3 is the industry benchmark for genset paralleling applications where reliability, accuracy, and IEC/ANSI protection compliance are non-negotiable.
Complete Technical Specifications
- Part Number: 8406-113
- Model: EGCP-3 (Engine Control & Generator Protection, 3rd Generation)
- Manufacturer: Woodward, Inc. (Fort Collins, CO, USA)
- Generator Voltage Input: 100–480 VAC (3-phase, 4-wire), ±20% tolerance
- Frequency Range: 45–65 Hz
- CT Input: 5A secondary (standard), burden <0.5 VA
- Speed Sensing: Magnetic pickup (MPU), 100–10,000 Hz input range
- Power Supply: 18–32 VDC (nominal 24 VDC), <25W
- Digital Inputs: 16 configurable discrete inputs (active high/low)
- Relay Outputs: 8 form-C relay outputs, 5A @ 250 VAC
- Analog Outputs: 2 × 4–20 mA (governor & AVR bias)
- Communication: RS-232 / RS-485 (Modbus RTU), optional CANbus
- Display: 4-line × 20-character backlit LCD with 6-button keypad
- Protection Functions: ANSI 27 (undervoltage), 59 (overvoltage), 81O/U (over/underfrequency), 25 (sync check), 32 (reverse power), 40 (loss of field), 46 (negative sequence), 47 (phase sequence), 51V (voltage-restrained overcurrent), 67 (directional overcurrent)
- Operating Temperature: -20°C to +70°C
- Storage Temperature: -40°C to +85°C
- Humidity: 5–95% RH, non-condensing
- Enclosure: Panel-mount, IP20 front face (NEMA 1 equivalent)
- Dimensions: 144 × 144 × 120 mm (H × W × D)
- Weight: Approx. 1.2 kg
- Certifications: CE, UL, cUL listed; IEC 60255 compliant
- Vibration: IEC 60068-2-6, 5–150 Hz, 1g
- Shock: IEC 60068-2-27, 15g, 11ms
Proven Application Environments
- Diesel and natural gas genset paralleling (utility & generator bus)
- Standby, prime power, and peak-shaving power plants
- Data center and hospital critical power systems
- Marine auxiliary generator control (DNV-GL class projects)
- Oil & gas wellhead and offshore platform power
- Industrial co-generation (CHP) facilities
- Municipal water treatment and pumping stations
- Mining and remote site power generation
Engineering Advantages
- All-in-One Integration: Replaces discrete speed governor, AVR interface, synchronizer, load sharer, and protection relay — reducing BOM cost and panel footprint by up to 60%.
- Isochronous Load Sharing: Droop-free kW load sharing across up to 8 paralleled generators with <1% steady-state deviation.
- Dead-Bus & Live-Bus Synchronizing: Automatic sync-check with programmable voltage, frequency, and phase-angle windows (ANSI 25).
- Configurable Protection Curves: All ANSI protection setpoints are field-adjustable via front panel or Woodward Watch Window software.
- Event Log & Fault Memory: 64-event time-stamped fault log for post-mortem diagnostics without external data logger.
- Modbus RTU Integration: Native RS-485 Modbus RTU for SCADA, BMS, and PLC supervisory integration.
- Wide Input Voltage Tolerance: 18–32 VDC operation ensures compatibility with both 24V and 32V battery systems.
System Architecture & Signal Flow
The EGCP-3 operates as the central intelligence hub of the genset control panel. The MPU speed signal feeds the PID speed governor algorithm, which outputs a 4–20 mA bias signal to the engine’s fuel actuator or electronic governor. Simultaneously, the PT voltage inputs are processed by the synchronizer and protection logic. Upon receiving a start command (discrete input), the EGCP-3 sequences engine crank, monitors speed ramp-up, executes synchronization, closes the generator breaker (via relay output), and transitions to isochronous load sharing — all autonomously. The AVR bias output trims generator terminal voltage to match bus voltage prior to paralleling.
Sourcing & Quality Verification
- Origin: Genuine Woodward manufacture, Fort Collins, CO, USA
- Traceability: Each unit ships with Woodward factory serial number and date code
- Condition: New surplus / refurbished units available — condition disclosed at order confirmation
- Testing: Functional bench-tested prior to shipment; test report available on request
- Packaging: Anti-static ESD bag + foam-lined export carton; humidity indicator card included
- Lead Time: In-stock units ship within 1–3 business days; contact us for volume availability
Procurement Process
- Confirm Part Number: Verify 8406-113 against your BOM or Woodward nameplate — cross-reference with 8406-110, 8406-111, 8406-112 variants if needed.
- Request Quote: Contact [email protected] with quantity, required condition (new/refurb), and delivery timeline.
- Order Confirmation: PO accepted via email; proforma invoice issued within 4 business hours.
- Payment: T/T bank transfer, PayPal, or trade assurance accepted.
- Shipment: DHL / FedEx / UPS express with full tracking; export documentation (CO, packing list, commercial invoice) provided.
- After-Sales: 12-month warranty on new units; 90-day warranty on refurbished units. Technical support via email and WhatsApp.
Technical FAQ
Q: What is the difference between 8406-113 and 8406-110?
A: The 8406-113 includes enhanced Modbus RTU communication and expanded discrete I/O count compared to the base 8406-110. Confirm your panel wiring diagram before substituting.
Q: Can the EGCP-3 control a single non-paralleling generator?
A: Yes. The EGCP-3 supports single-unit (island mode) operation with full protection functions active. Paralleling features can be disabled via configuration.
Q: What software is required for configuration?
A: Woodward Watch Window Pro (free download from Woodward.com) via RS-232 service port. All parameters can also be set via front-panel keypad.
Q: Is the EGCP-3 compatible with Cummins, Perkins, or Caterpillar engines?
A: Yes. The EGCP-3 is engine-agnostic and interfaces with any engine equipped with a magnetic pickup and a compatible electronic governor actuator (e.g., Woodward EG, Heinzmann, GAC).
Q: What is the typical shelf life for stored units?
A: Woodward recommends a 5-year shelf life for stored electronics in controlled environments (15–25°C, <60% RH). Capacitor re-forming may be required for units stored beyond this period.
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