Woodward 8406-120

Product Introduction
The 8406-120 is a high-performance, microprocessor-based digital control unit belonging to the EGCP-2 series. It is specifically engineered to manage, monitor, and protect engine-driven generator sets, providing comprehensive control for startup, shutdown, synchronization, and load sharing.

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Description

Woodward 8406-120

Technical Specifications

  • System Type: EGCP-2 Engine Generator Control Package
  • Power Supply: 10–29 Vdc (compatible with 12V or 24V systems)
  • Power Consumption: 20 W at rated voltage
  • Voltage Measurement Range: 150–300 Vac rms
  • Frequency Range: 40–70 Hz
  • Current Input Range: 0–6 A rms

Functional Features

  • Sequence Control: Automates engine start, stop, warm-up, and cooldown sequences.
  • Synchronization & Load Sharing: Enables seamless paralleling with other generators or utility grids.
  • Real-Time Monitoring: Dual LCD screens display up to eight lines of status, configuration, or alarm log information simultaneously.
  • Remote Communication: Supports Modbus and Woodward ServLink protocols for remote monitoring and data acquisition.

Application Scenarios
Widely utilized in industrial facilities, commercial buildings, data centers, and utility power plants for prime, standby, or peak-shaving power generation.

Performance Parameters

  • Measurement Accuracy: 1.0% for voltage and current at rated conditions; 2.0% for power.
  • Processing Speed: High-speed microprocessor ensures rapid response to load transients and fault conditions.

Material Composition
Housed in a rugged, industrial-grade enclosure with conformal-coated printed circuit boards to protect against moisture, dust, and electromagnetic interference.

Structural Characteristics

  • User Interface: Front panel features a membrane keypad and two backlit LCD displays.
  • Indicators: Red LED indicators provide immediate visual alerts for alarm and shutdown conditions.

Working Principle
The controller continuously samples voltage, current, frequency, and engine parameters via analog and digital inputs. It executes programmed logic to adjust fuel and excitation, ensuring stable power output while triggering protective shutdowns if parameters exceed safe limits.

Installation Requirements
Must be installed in non-hazardous locations. Field wiring must be rated for at least 90°C, and the protective earth (PE) terminal must be securely connected.

Precautions for Use
Ensure all wiring complies with local electrical codes. Regularly test safety protection functions during scheduled maintenance to guarantee system reliability.