Month: September 2025

Stopping the recorder can be triggered by either an event or a preset

time. For easier management and trouble-shooting, event data can be

transferred and analyzed. The data transfer is made by a link through a

plug on the front panel of the SYMAP® device.

Diagnostics and monitoring

SYMAP® provides various diagnostic and monitoring functions:

•  all memories (ROMs, RAMs, EEPROMs)

•  all analog reference voltages

•  automated test sequences

•  control power ON/OFF

•  binary input and output for control logic

The following supervising systems are offered by SYMAP®:

•  self-diagnostics

•  inputs of analog data (auxiliary circuit)

•  status and position of switching device and motor’s on-off status

•  supervising supply of trip coil

•  gas pressure

• temperature inside panel

•  each operating life of breaker (hours)

Data recorder (optional)

The data recorder can log analog inputs, digital inputs, and digital out

puts. The recorder has the following settings:

•  number of samples (6-72)

•  recording period (5-60 sec)

•  pre-trigger (0-100%)

•  trigger event (start for recorder)

•  trigger event (stop for recorder)

The recording period depends on the number of samples. The recorder

can be set with the pre-trigger to record event data even before the

event happens.

Diagnostics and monitoring

SYMAP® provides various diagnostic and monitoring functions:

•  all memories (ROMs, RAMs, EEPROMs)

•  all analog reference voltages

•  automated test sequences

•  control power ON/OFF

•  binary input and output for control logic

The following supervising systems are offered by SYMAP®:

•  self-diagnostics

•  inputs of analog data (auxiliary circuit)

•  status and position of switching device and motor’s on-off status

•  supervising supply of trip coil

•  gas pressure

• temperature inside panel

•  each operating life of breaker (hours)

Detailed protection function history

SYMAP® automatically collects and stores all activated events related to

protection functions with a time stamp. A maximum of 1.000 protection

function events can be stored. In case of overflow, overwriting follows

the FIFO principle.

Event history

SYMAP® automatically collects and stores all activated events with their

number, title, appearing and disappearing status and a time stamp. A

maximum of 5.000 events can be stored. In case of overflow, overwriting

follows the FIFO principle. The event history can be transferred to a PC

and evaluated by a PC tool. Regardless of power supply, the data store is permanent.

Communication

SYMAP® can serve as the main bay controller for the power management

system or substation system. The following list shows the station system

items available through  SYMAP®:

• remote supervision

•  remote control

•  remote parameter setting

•  central registration of measured and calculated values

•  central event logging

•  central fault recording, analysis and logging

•  plant power management

Communication interfaces

SYMAP® provides communication ports available with the following

interfaces and protocols:

•  1 x RS 232 on the front panel for programming and data output

•  1 x RS 422/485 port

• 1 x PROFIBUS DP (RS485 or fiber optic port)

•  MODBUS RTU

•  MODBUS TCP (RJ45 or fiber optic port)

•  IEC 60870-5-103 (RS485 or fiber optic port)

•  IEC 61850 (RJ45 or fiber optic port)

•  CANBUS 1 (communication between devices as power management

system, breaker control interlocking)

•  CANBUS 2 (engine control interface: MTU, VOLVO, DEUTZ etc.)

Features and interfaces

Terminal connections

All connections to SYMAP® are made with terminal plugs on the back of

the device, allowing the device to be exchanged easily.

Analog input for measurement

SYMAP® provides inputs for analog sensors at the rear of the device. If

terminal plugs for the CTs are disconnected, the circuits will be linked

automatically so there is no disconnection in the CT circuit loops.

A total of 17 analog inputs for current and voltage transformers are used

for protection functions. The following list shows possible connections

for current transformers (CT) and potential transformers (PT):

•  3 x CT inputs for feeder current

•  1 x CT input for ground current

•  3 x PT inputs for feeder voltage

•  3 x PT inputs for 1st bus bar voltage

•  3 x PT inputs for 2nd bus bar voltage

•  1 x PT input for ground voltage

Human Machine Interface

SYMAP® is easy to program and operate. A large graphic LCD with optional LED indicators conveys

important data such as position of all connected breakers, parameter settings, and event histories

at a glance. Graphics and measurements are displayed side-by-side on the LCD, so that the user does

not have to switch between pages.

The entire programming of SYMAP® can be done with the keys on its front panel or by

using a notebook. Using a notebook offers the advantage that stored parameters can

easily be applied to other SYMAP® units.

Either way, easy programming is guaranteed and on-site visits by the manufacturer’s engi

neers during commissioning is not required. SYMAP® provides four hotkeys placed under

neath the LCD to access four main groups of values, namely »Meters«, »Alarm«, »Process«

and »Breaker Control«. The user can press the hotkeys to scroll through pages of information.

The hotkey »Meters« provides detailed information on electric measurement values,

counters for active and reactive power and working hours. 

The hotkey »Alarm« displays all active alarms, event log and blockings. »Process« shows all process data

such as the synchronization display, motor thermal indication and a counter of breaker operations. Under

»BreakerControl«, up to five breakers can be accessed and controlled.

When programming breaker controls the user has access to various layout configurations via a

library. Programmed blockings remain active when manual control of the breaker is used. Each of

the highlighted breakers in the LCD can be further controlled by the keys »O« and »I«.

For security, access to SYMAP®’s parameter and breaker control data is protected by a code system,

accessed by a password.

Product overview

SYMAP® is a flexible microprocessor-based digital protection device for use in low, medium and

high voltage power systems.

Because of its integrated protection functions and human machine interface capabilities it is an

efficient and cost-effective solution for all types of switchboards. With three powerful microproces

sors SYMAP® offers comprehensive protection functions for generators, motors (synchronous and

asynchronous), transformers, power lines and distributions.

All protection functions can be activated simultaneously. With SYMAP® five main breaker controls

can be activated with all necessary functions such as display, control and blocking for optimal

breaker manage ment. A small integrated PLC allows individual functionality, such as interlocks

from controlling functions. For flexibility in commissioning and during use, both digital and analog

outputs can be used to connect the SYMAP® control unit to main switchboard controls. Addition

ally, a variety of serial interfaces with different kinds of protocols can be used for communication

between SYMAP® units and the central control system.

For diagnostics and monitoring, SYMAP® has three microprocessors that supervise each other, pro

viding a watchdog system. Important functions are laid out in a double redundancy combination,

operating independently with the second processor. Connected separately, an optional unit for

short circuit protection operates parallel to the SYMAP® device and will do so even if the entire

voltage fails.

For diesel and gas engines we develop, design and manufacture control sys

tems for single and multiple generator systems, for generator and network 

protection as well as multifunctional protective relays for low and medium 

voltage installations. We can provide you with electrical engineering such as 

CAD design, turn-key solutions and the production and installation of control 

systems for on- and offshore applications.

 Development and supply of

 • diesel automation systems

 • generator protection systems

 • hybrid-powered electrical networks

 • mains protection systems

 • power management control for multi-generator sets

 • multifunctional protection relays 

• marine- and land-based power station controls

 • emergency power plant stations

 • hydro-stream turbine control

 • gas engine control

stuckeGROUP offers

 • innovative, robust, reliable, state-of-the-art products and solutions

 •  customizable, flexibly programmable and expandable devices

 •  service and support during the entire product lifecycle

 • worldwide service through partnership network

 •  high-quality products designed and manufactured in Germany 

• product training

 • consulting and project management

Our customers

 • maritime industry

 • offshore companies

 • power supply and power distribution companies

 • engine manufacturers

 • low and medium voltage switchboard manufacturers

 • genset suppliers (design and manufacturing)

We can provide you with electrical engineering such as 

CAD design, turn-key solutions and the production and installation of control 

systems for on- and offshore applications.