DEIF AGC242 Multi-Function Generator Controller

Description

1. Core Overview & Positioning

2. Key Features & Functions

• Automatic Genset Control:
  • Automatic Start/Stop:​ Manages start sequences, cool-down periods, and shutdown logic.
  • Mains Failure Detection:​ Automatically starts the genset upon utility power failure.
  • Load Demand Management:​ Can start/stop multiple gensets based on load (with additional modules).
• Synchronization & Load Sharing:
  • Auto-Synchronization:​ Automatically synchronizes the generator to the busbar (utility or other genset) by matching voltage, frequency, and phase angle.
  • Isochronous Load Sharing (Optional):​ When equipped with the PCC 200​ module or connected via CAN bus to other DEIF controllers, it enables proportional real power (kW) sharing between parallel-running generators.
  • Power Control:​ Controls import/export when synchronized to a utility grid.
• Comprehensive Protection:​ Monitors and protects the generator and engine with a wide range of adjustable setpoints:
  • Generator Protection:​ Over/under voltage & frequency, overcurrent, reverse power.
  • Engine Protection:​ Overspeed, low oil pressure, high coolant temperature, start failure, etc.
• Measurement & Display:
  • Clear HMI:​ Features a backlit graphical display for showing key parameters (Volts, Hz, kW, kWh, current, etc.), status, and alarms.
  • Extensive Metering:​ Measures all essential electrical parameters on all phases.
• Communication & Integration:
  • Built-in RS485​ port with support for Modbus RTU.
  • CAN bus​ interface (J1939 or CANopen) for connecting to modern engine ECUs and other DEIF controllers (e.g., for multi-genset systems).
  • Multiple programmable digital inputs/outputs for external control and alarm signaling.

3. Common Technical Specifications

• Power Supply:​ Wide range, typically 18-72 V DC​ (suitable for 24V systems) or an AC/DC variant.
• Generator Inputs:
  • Voltage:​ Up to 600V AC L-L (direct or via Potential Transformers).
  • Current:​ 1A or 5A AC (via Current Transformers — CTs).
• Engine Interface:
  • Analog/digital inputs for sensors (temp, pressure, etc.).
  • Digital outputs for fuel solenoid, start signal, etc.
  • CAN bus​ for direct communication with compatible engine ECUs (e.g., Caterpillar, Volvo, MTU).
• Synchronization:​ Built-in sync-check relay.
• Mounting:​ Panel-mount design.
• Environmental:​ Designed for rugged use, with high immunity to vibration and electromagnetic interference.

4. System Integration & Architecture

• Standalone Controller:​ Can operate a single genset independently.
• Multi-Genset Systems:​ Multiple AGC 242 units can be connected via their CAN bus​ to form a decentralized, masterless load-sharing system when combined with a DEIF PPM 200​ (Power Plant Manager) or a PCC 200​ module for advanced power management.
• Integration:​ Easily connects to vessel/plant automation systems (SCADA, BMS) via Modbus.
• Configuration:​ Programmed via the front-panel buttons or using DEIF’s PC-Tool 200​ software for more complex setups.

5. Typical Applications

• Marine & Offshore:​ Auxiliary generators on ships, offshore supply vessels, and platforms.
• Land-Based Standby Power:​ Emergency generators for hospitals, data centers, and commercial buildings.
• Prime Power:​ For smaller industrial sites, construction, or island-mode operations.
• Small Power Plants:​ As the core controller for individual gensets in a multi-genset power plant (with PCC/PPM).