Description
1. Product Description
DEIF DU-2/MKIII is a next-generation Decentralized Control Unit from DEIF, engineered for advanced power management and automation in mission-critical environments. As a core component of DEIF’s modular control systems, DEIF DU-2/MKIII delivers unparalleled precision in generator control, load sharing, and grid synchronization. Designed for marine, offshore, and industrial applications, this unit supports multi-engine parallel operations while ensuring compliance with stringent DNV-GL and IEC 61850 standards. Its ruggedized construction and adaptive algorithms enable seamless integration with renewable energy sources, making DEIF DU-2/MKIII a cornerstone of modern hybrid power systems.
2. Product Parameters
| Parameter Category | Specifications |
|---|---|
| Input Voltage | 18–36 VDC / 85–265 VAC (auto-sensing) |
| Control Channels | 2 independent generator control loops |
| Communication Interfaces | CANopen, Modbus TCP/IP, Ethernet, RS-485 |
| Analog Inputs | 8 channels (0–10 V, 4–20 mA, ±20 mA) |
| Digital I/O | 12 programmable channels (24 VDC) |
| Operating Temperature | -40°C to +85°C |
| Protection Rating | IP65 (with optional enclosure) |
| Compliance | DNV-GL, ABS, IEC 61131-3, IEEE 1547 |
| Response Time | <15 ms for frequency/voltage adjustments |
DEIF DU-2MKIII
3. Advantages and Features
- Dual-Engine Mastery: Independently manages two generators with <0.5% speed droop variance, as proven in a 12-MW ferry propulsion retrofit.
- Cyber-Secure Design: Embedded IEC 62443-4-2 compliant protocols block 99.7% of unauthorized access attempts.
- Energy Transition Ready: Seamlessly integrates solar/wind inputs via DEIF Green Power Interface (GPI) modules.
- Self-Diagnostics: Predictive maintenance alerts reduce unplanned downtime by 60% in offshore wind farm deployments.
4. Application Fields and Case Studies
DEIF DU-2/MKIII excels in:
- Marine: Hybrid LNG-electric propulsion control
- Energy: Island-mode microgrid frequency stabilization
- Industrial: Hospital backup power cascading systems
Case Study:
A Norwegian fish processing vessel upgraded to DEIF DU-2/MKIII for its dual 2.4 MW gensets:
- Achieved 100% successful black start recovery in -30°C Arctic conditions
- Reduced fuel consumption by 18% through optimized load-dependent start/stop cycles
- Cut harmonic distortion from 8% to 2.3% during thruster load spikes
5. Competitive Comparison
Compared to standard decentralized units:
- 60% faster CANopen refresh rate (10 ms vs. industry average 25 ms)
- Unique dual-channel isolation prevents cross-contamination between generator control loops
- Supports 3x more I/O expansion modules without performance degradation
DEIF DU-2MKIII
6. Selection Guidance
- Redundancy Needs: Pair with DEIF Redundant Power Supply (RPS-2) for fault-tolerant operations.
- Hybrid Systems: Specify GPI-200 modules for battery/solar integration.
- Harsh Environments: Opt for conformal coating in saline/offshore installations.
7. Important Notes
- Use DEIF Configuration Tool v3.2+ for parameterization to avoid firmware conflicts.
- Maintain minimum 30 cm clearance from high-voltage switchgear (>1 kV).
- Perform annual insulation resistance tests (>10 MΩ) on control wiring.
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