Siemens 6MD85, Manual

Page: 304 / 1256

Introduction
Overview
The SIPROTEC 5 series of devices offers powerful command processing capability as well as additional func-
tions that are needed when serving as bay controllers for the substation automation technology or when
providing combi-protection. The object model for the devices is based on the IEC 61850 standard, making the
SIPROTEC 5 series of devices ideally suited for use in systems employing the IEC 61850 communication
protocol. In view of the function blocks necessary for the control functions, other logs are also used.
Concept of Controllables
The concept of so-called controllables is based on the data model described in IEC 61850. Controllables are
objects that can be controlled, such as a switch with feedback. The model of a transformer tap changer , for
example, contains controllables. The controllables are identifiable by their last letter C of the data type (for
example, DPC = Double Point Controllable/Double Command with feedback or BSC = Binary-Controlled Step
Position Indication / transformer tap command with feedback ).
6.1
6.1.1
6.1.2
Control Functions
6.1 Introduction
304 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017