Product Overview

• Brand: DEIF A/S (a global provider of power control, monitoring, and automation solutions)
• Model: DU-2
• Type: Compact Digital Display Unit / HMI (Human-Machine Interface)
• Industry: Marine (merchant ships, offshore vessels), power generation (diesel gensets, renewable energy), industrial backup power, and microgrids.
• Function: Serves as a local monitoring and control interface for DEIF’s power management systems (PMS), genset controllers (e.g., DGC-2020), and automation systems. It displays real-time operational data (e.g., voltage, current, genset status) and allows manual control inputs (e.g., start/stop gensets, reset alarms) via a user-friendly interface. Its compact design makes it suitable for space-constrained environments like engine rooms or control panels.

Key Features

1. Intuitive Display & User Interface
   • Equipped with a monochrome or color LCD screen (estimated 2.4–4.3 inches, based on DEIF’s compact DU series). The display shows critical parameters in clear, configurable layouts (e.g., numeric values, bar graphs, status icons).
   • Features tactile pushbuttons or a membrane keypad for manual operations (e.g., navigating menus, confirming commands) — designed for reliable use in harsh industrial/marine environments (resistant to dust and moisture).
2. Real-Time Data Monitoring
   • Preconfigured to display core power system and genset parameters:
     • Electrical parameters: AC voltage, current, frequency, power (kW/kVA), power factor (PF).
     • Operational status: Genset running/stopped, circuit breaker position (open/closed), load sharing status.
     • Alarms & events: Visual and audible alerts for faults (e.g., low oil pressure, overspeeding) with timestamped event logs (stores last 50–100 events).
3. Local Control Capabilities
   • Enables manual control of connected devices without relying on a central HMI or SCADA system:
     • Genset control: Start/stop, emergency stop, and synchronization (when paired with DEIF PMS).
     • Alarm management: Acknowledge alarms, reset fault conditions, and view alarm history.
     • Parameter adjustment: Modify basic settings (e.g., genset rated speed, alarm thresholds) via password-protected menus to prevent unauthorized changes.
4. Rugged Design for Harsh Environments
   • Built to withstand marine and industrial conditions:
     • Ingress Protection (IP) Rating: IP65 (dust-tight and protected against water jets) for standalone installation in engine rooms or offshore platforms.
     • Vibration/Shock Resistance: Compliant with IEC 60068-2-6 (vibration, 10–500 Hz) and IEC 60068-2-27 (shock, 30g peak acceleration) — durable for use near rotating machinery.

Key Specifications

1. Display & Interface
   • Screen Type: LCD (monochrome or color, backlit for low-light visibility).
   • Screen Size: Estimated 2.4–4.3 inches (compact form factor for panel mounting).
   • User Input: 4–8 tactile pushbuttons (membrane keypad option available).
   • Audible Alarm: Built-in buzzer (85 dB) for fault alerts (muteable via keypad).
2. Electrical Parameters
   • Power Supply: 24V DC (nominal, standard for DEIF modules), with a tolerance range of 18–32V DC. Optional 12V DC variant available for small-scale systems (verify with DEIF).
   • Power Consumption: ≤5W (low power draw, suitable for battery-backed systems).
   • Communication Interfaces:
     • 1 x RS-485 port (Modbus RTU) for communication with DEIF controllers (e.g., DGC-2020, PMS 300).
     • Optional CAN bus port (for marine genset networks, e.g., NMEA 2000).
3. Physical & Environmental Attributes
   • Form Factor: Panel-mount design (cutout dimensions estimated 70 mm × 50 mm) for integration into control cabinets or genset local panels.
   • Dimensions: Approximately 80 mm × 60 mm × 30 mm (depth) — compact for space-constrained areas.
   • Environmental Ratings:
     • Operating Temperature: -25°C to +70°C (suits extreme climates, from cold storage to engine rooms).
     • Humidity: 5–95% (non-condensing), resistant to moisture in marine environments.
     • Salt Spray Resistance: Compliant with IEC 60068-2-52 (suitable for offshore applications).
4. Certifications & Compliance
   • Marine Certifications: Likely certified by DNV GL, ABS, Lloyd’s Register (LR), and Bureau Veritas (BV) for use in merchant and offshore vessels.
   • Industrial Standards: Compliant with IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions) to avoid interference with nearby electronics.

Applications

• Marine Genset Control:
  • Local HMI for marine gensets, displaying parameters like fuel level, cooling water temperature, and electrical output. Allows crew to start/stop gensets and troubleshoot alarms directly from the engine room.
• Industrial Backup Power:
  • Mounted on diesel gensets in data centers, hospitals, or factories to provide on-site monitoring and control. Enables technicians to check genset status without accessing a central control room.
• Renewable Energy Systems:
  • Interface for small-scale solar or wind power systems, displaying energy production, battery charge level, and system status. Supports manual adjustment of power distribution settings.
• Microgrid Monitoring:
  • Local display for DEIF-controlled microgrids (e.g., remote communities, military bases), showing load distribution, renewable energy input, and battery storage status.

Availability and Support

• Condition: Available as new OEM (through DEIF A/S or authorized distributors) or genuine refurbished (via specialized suppliers, e.g., Marine Controls, Power Systems International).
• Warranty: 24-month warranty for new units (standard for DEIF products); refurbished units typically include a 12-month warranty.
• Documentation:
  • User manuals, wiring diagrams, and configuration guides are available to DEIF customers via DEIF’s customer portal.
  • Third-party distributors may provide installation notes for pairing with DEIF controllers.

Compatibility and Similar Products

• Compatible Systems:
  • DEIF Genset Controllers: DGC-2020, DGC-300, DGC-150.
  • DEIF Power Management Systems: PMS 300, PMS 400.
  • DEIF Automation Controllers: AGC-400, MTC-300.
• Similar DEIF Models:
  • DEIF DU-4: Larger HMI with a 4.3–7-inch color touchscreen (for more complex data visualization).
  • DEIF DU-1: Basic digital display (no control functions) for simple parameter monitoring (e.g., only voltage/frequency).

Installation and Maintenance Notes

1. Setup Requirements:
   • Panel-mount in a control cabinet or genset local panel using the provided cutout template. Ensure the front face is accessible for user interaction (avoid mounting in confined spaces).
   • Configure via DEIF’s PC-Tool software to select displayed parameters, set alarm thresholds, and define communication settings (baud rate, Modbus address).
2. Wiring Guidelines:
   • Connect power and communication cables using the terminal block (use 0.5–1.5 mm² copper wire). Secure wiring to prevent loosening from vibration.
   • Use shielded cable for the RS-485 communication line; ground the shield at the controller end to minimize EMI interference.
3. Safety & Troubleshooting:
   • Follow lockout-tagout (LOTO) procedures when wiring the module to live power systems.
   • Use built-in diagnostics to resolve issues:
     • No display: Check power supply voltage and wiring connections.
     • Communication failure: Verify Modbus address and baud rate match the connected controller.
     • Unresponsive keypad: Inspect for physical damage (e.g., dust or moisture ingress) and clean the keypad if needed.

Critical Notes

1. Model Functionality: The DU-2 is a local HMI with basic control — it cannot replace DEIF’s central PMS or SCADA systems for large-scale power network management. It is designed for on-site, device-level operation.
2. Display Customization: The number of configurable parameters is limited by the screen size. Prioritize critical data (e.g., genset status, alarms) during setup to avoid cluttered displays.
3. Genuine Parts Recommendation: Use genuine DEIF DU-2 units for marine and safety-critical applications. Aftermarket alternatives may not meet IP65 or marine certification standards, risking failure in harsh environments.