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DEIF paralleling & protection unit (PPU)

Easy to operate and configure, DEIF’s PPU-3 control and protection unit is an ideal controller for PLC-based power management systems.

Apart from generator protection and synchronisation, the PPU-3 also features regulation modes including load sharing, fixed power, fixed frequency, etc. Serial communication enables easy interfacing with PLCs, SCADA-systems and more, and the unit features all necessary three-phase measuring circuits, displaying all values and alarms on a quality LCD screen.

Turning the PPU-3 into an engine control unit featuring start/stop and protection functionalities, the optional engine interface card also has a separate power supply and an independent microprocessor.

In cases of PPU-3 processor breakdowns, the engine interface card will enter into backup mode and ensure uninterrupted engine supervision.

In cases of shutdown alarms, the engine shuts down automatically, making it a reliable solution for control and supervision of marine gensets.

Easily integration with DEIF's PPU

Additional Operator Panels (AOP) can easily be installed and integrated for further levels of remote control, supervision and status indication. Both displays and panels feature a dimmer function for use on the ship’s bridge.

With a range of additional hardware options available, as well as DEIF’s Multi-Line 2 Utility Software v.3 (USW-3) with programmable logic (M-Logic), you can customise the application to suit your needs exactly: dedicate specific functions or logic conditions to different inputs and outputs and tune all sequences according to your requirements.

Free software download and upgrade at

PPU protection unit - Features

The PPU protection unit from DEIF has a long list of features:

  • Internal system supervision
  • Engine control, monitoring and protection
  • 3-phase generator protections
  • Automatic synchronisation
  • Load sharing
  • Internal CAN bus and analogue load-share line
  • Multiple display units and multiple Additional Operator Panels (AOPs)
  • RS-485 and TCP/IP Modbus communication ports
  • Interface to the DEIF advanced graphical touch screen AGI
  • CAN bus port for J1939 engine supervision
  • Alarm and event log
  • USB port for service software
  • Up to 690 V AC direct AC inputs
  • Trip of non essential load groups (preferential trip)
  • Advanced fuel optimisation features
  • M-Logic event builder
  • Integrated emulation software solution


Commissioning Guidelines
Sprog Dokumenter Revision
Flag zho 通用调试指南_4189340819_中文.pdf C
Description of Options
Sprog Dokumenter Revision
Flag eng Option A1 mains protection package 4189340684E UK.pdf E
Flag deu Option A1 Netzschutzpaket 4189340544G DE.pdf G
Flag eng Option A4 Loss of mains protection package 4189340691B UK.pdf B
Flag eng Option A5 directional over-current protection 4189340692B UK.pdf B
Flag deu Option C2 Generator add-on protection package 4189340693 DE.pdf G
Flag spa Option C2 Generator add-on protection package 4189340693G ES.pdf G
Flag eng Option C2 Generator add-on protection package 4189340693G UK.pdf G
Flag deu Option D1 voltage, var, cos phi control 4189340694 DE.pdf G
Flag spa Option D1 Voltage, var, cos phi control 4189340694G ES.pdf G
Flag eng Option D1 voltage, var, cos phi control 4189340694H UK.pdf H
Flag eng Option E and F analogue controller, transducer outputs 4189340681D UK.pdf D
Flag deu Option E und F Analoge Regler- und Messumformerausg 4189340538 DE.pdf D
Flag eng Option G9 CANshare 4189340747 UK.pdf D
Flag eng Option H2 and H9 Modbus communication 4189340442 UK.pdf Y
Flag eng Option H3 Serial communication Profibus DP 4189340443 UK.pdf H
Flag spa Option H3 Serial communication Profibus DP 4189340637 ES.pdf C
Flag eng Option H5 H7 H12 and H13 MTU MDEC ADEC J1939 CANbus engine interface 4189340674O UK.pdf O
Flag eng Option H6 Cummins GCS communication 4189340698D UK.pdf D
Flag eng Option H8 and H12 external IO modules 4189340675G UK.pdf G
Flag deu Option M13 EA-Erweiterungskarten, 7 Binäreing 4189340540D DE.pdf D
Flag eng Option M13 IO extension card 7 dig inputs 4189340700A UK.pdf A
Flag eng Option M14 IO extension card 4 relay outputs 4189340682C UK.pdf C
Flag deu Option M15 EA-Erweiterungskarten, 4x 4-20 mA Eing 4189340542D DE.pdf D
Flag eng Option M15 IO extension card 4 analogue inputs 4189340683D UK.pdf D
Flag eng Option M4 engine control and protection 4189340585I UK.pdf I
Flag eng Option N Ethernet IP 4189340801 UK.pdf B
Flag eng Option N Modbus TCP IP 4189340701 UK.pdf F
Flag deu Option N Modbus TCP IP 4189340725 DE.pdf E
Flag deu Option X Additional display and operator panel 4189340546H DE.pdf H
Flag eng Option X Additional display and operator panel 4189340702E UK.pdf E
Flag zho 选项_A4_市电失电保护功能包_4189340691_(中文).pdf B
Flag zho 选项_A5_方向过电流_-_电流保护_4189340758_中文.pdf B
Flag zho 选项_C2_发电机扩展保护功能包_4189340693_(中文).pdf G
Flag zho 选项_D1_电压、无功、功率因数控制_4189340694_中文.pdf F
Flag zho 选项_E_和_F_模拟量输出_4189340829_中文.pdf A
Flag zho 选项_G9_CANshare_4189340851_中文.pdf C
Flag zho 选项_H2_和_H9_Modbus_通讯_4189340870_中文.pdf C
Flag zho 选项_H3_Profibus_DP_通讯_4189340857_中文.pdf B
Flag zho 选项_H5,_H7,_H12和_H13_MTU_MDEC,_ADEC,_J1939_CANbus_发动机通讯_4189340864_中文.pdf D
Flag zho 选项_H8,_H12_外部扩展IO模块_4189340859_中文.pdf C
Flag zho 选项_M13_IO扩展卡7个开关量输入_4189341135_中文.pdf A
Flag zho 选项_M14_IO扩展卡_4个继电器输出_4189341136_中文.pdf A
Flag zho 选项_M15_IO扩展卡_4个模拟量输入_4189340852_中文.pdf A
Flag zho 选项_M4_发动机控制与保护_4189340871_中文.pdf D
Flag zho 选项_N_以太网通讯_4189340889_中文.pdf B
Quick Start Guide
Sprog Dokumenter Revision
Flag eng ML-2 Quick start guide 4189340603 UK.pdf C

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