Siemens Aktiengesellschaft

Matthias Metzler

Michael Abert

Gerald Hirmer

Arnold Klamm

Gunter Griessbach

Werner Engl

Dirk Schmidt

A modular electrical system including a first current-emitting source module and a first current-consuming sink module which is connected to the first current-emitting source module is provided. The first sink module has a first sink identification means to identify maximum power requirement of the first sink module. The object of providing power balancing between a first source module and a first sink module is achieved in that the first source module has a first source identification means for identifying the power capacity of the first source module, wherein in order to calculate a power ratio of the system the first sink identification means and the first source identification means are connected to a two-wire line for the purpose of generating a differential voltage.

Modular electrical system and method for its operation

There is described a method for operating a system of modular structure, which can be extended during operation by adding modules that consume electrical energy, in particular a process automation system, the system having a power supply, which supplies the other modules of the system with electrical energy, with at least one signal being generated and displayed before a further module that consumes electrical energy is added, from which signal it is possible to identify or derive the level of current electrical power, which the power supply can still supply to the further module to be added given the already added modules&#x2014;residual power&#x2014;and/or the level of power, which the power supply supplies currently to the already added modules and/or from which it can be identified or derived whether the module to be added can be added without overloading the power supply.

Method for operating a system of modular structure, in particular a process automation system

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Karlsruhe, Germany

Matthias Metzler