Modular Architecture Analysis of DEIF PPU 300 Ship Generator Controller

PICUS tool

PICUS is a free PC software provided by DEIF, with features including:

Single line diagram drawing: graphic design of system topology.

Parameter configuration: Set controller parameters, I/O functions, and set value groups (up to 4 sets of rated parameters).

System simulation and monitoring: Logic can be verified without the need for hardware.

Permission management: Delegate power according to users/user groups.

Backup and firmware upgrade: a convenient maintenance tool.

Trend recording: Real time tracking of changes in measurement values.

CODESYS extension

Users can order CODESYS as an additional feature to achieve:

Custom logic programming (compliant with IEC 61131-3 standard).

Increase the number of controller functions (up to 20 Modbus signals per controller, which can be mapped as inputs or outputs).

Combining with Flexible Modbus to expand communication capabilities.

Protection function (ANSI standard)

PPU 300 provides comprehensive source side (generator/inverter/shaft/shore power) and bus side protection, all of which are based on high-speed processors and internal communication for fast action. The following is a list of protection functions (ANSI numbers in parentheses):

Source side AC protection

Protection function ANSI level

Overvoltage 59 2 segments

Undervoltage 27, Section 2

Voltage imbalance 47 1 segment

Negative sequence voltage 47 1 segment

Zero sequence voltage 59N, segment 1

Overcurrent (timed limit) 51 2 segments

Quick break overcurrent (short circuit) 50/51 2 segments

Current imbalance 46 2 segments

Inverse time overcurrent 51 1 segment

Directional overcurrent 67 2 segments

Negative sequence current 46 1 segment

Zero sequence current 51N, segment 1

Over frequency 81O 2 segments

Underfrequency 81U 2-segment

Overload 32 2 sections

Reverse power 32R 2 segments

Overexcitation (reactive power output) 400 2 segments

Underexcitation (reactive input/demagnetization) 40U 2-stage

Stable differential current protection 87G 1st section (ACM3.2 required)

High setting differential current protection 87G 1st section (ACM3.2 required)

Synchronization check (including black start closing) 25 1 section

Bus side AC protection

Protection function ANSI level

Overvoltage 59 2 segments

Undervoltage 27, Section 2

Voltage imbalance 47 1 segment

Over frequency 81O 2 segments

Underfrequency 81U 2-segment

Other AC protections

Locking relay (86)

Grounding inverse time overcurrent (51G)

Neutral point inverse time overcurrent (51N)

All protections have definite time characteristics, flexible settings, and can meet the requirements of classification societies and power grid regulations.

Communication and Network

The communication capability of PPU 300 is one of its core advantages:

5 RJ45 Ethernet ports: Supports IPv6 (auto configuration) and IPv4 (configurable), allowing access to all controllers within the network through a single Ethernet connection.

DEIF network: Ring network communication between controllers, providing communication redundancy. Support load distribution, synchronization/load shedding, external bus coupling position feedback, and automatic detection of bus segments (including ring buses).

CAN bus: used to connect the engine ECU (supporting the universal J1939 protocol), read engine parameters, and control the ECU.

Modbus: Supports multiple Modbus protocols, configurable server settings, supports data unit conversion and scaling.

Authentication and Security: Network communication has authentication mechanisms to prevent external device interference; Support password protection (customizable permission levels).

NTP time synchronization: The controller in the system automatically synchronizes the date/time and can also synchronize with the NTP server.

Display Unit DU300

DU300 is a 5-inch high-resolution color graphic display screen with dimensions of 238 × 178 × 52.4mm. Its features include:

Intuitive menu navigation and help information make it easy for operators to quickly get started.

Physical buttons are easy to operate in harsh environments (gloves can also be worn).

Supports multiple languages.

Each controller can connect up to 2 display units (with interlock function).

The screen can display status information, real-time measurement values, alarm lists, and event logs.

Key Additional Features

AC Measurement Averaging: In response to numerical fluctuations caused by high measurement accuracy, 200ms or 800ms averaging filters can be applied to measurement values such as voltage, current, and frequency. The filtered data is used for display, trend recording, Customs Logic, CODESYS, and Modbus, but it does not affect the protection criteria and adjustment values, ensuring that the protection speed is not affected.

Engine Interface Safe Shutdown (EIM3.1): The EIM3.1 module can be configured as a safe shutdown module, which can safely shut down the engine in independent mode even if communication with the main processor is interrupted, providing hardware level safety redundancy.

Flexible configuration of relays and analog signals:

The relay can be configured with functions and coil status (normally open/normally closed).

Analog input supports sensor fault detection (below lower limit and above upper limit).