The communicative fault annunciators

Communication through IEC 60870-5-101/104 and IEC 61850

The networkable annunciators of the series USM provide the functionality and flexibility of the series BSM and add communication interfaces for connection to superior or inferior systems. Through the Modbus protocol information or states can be exchange and through IEC 60870-5-101/104 and IEC 61850 single and double alarms can be transmitted e.g. to a SCADA system and single and double commands can be received and issued from the annunciator. In addition, analog inputs enable the monitoring of limit values. In the download area cost-free available EPLAN macros facilitate the creation of circuit diagrams and a smart parameterisation concept ensures that installation and commissioning of the interfaces is easy as never before!


IEC 61850. By means of a software license key communication over IEC 61850 can be activated for each USM. With the USM acting as "rag-man" single point information as well as double alarms can be integrated easily in existing IEC 61850 structures in switchgear stations.


Smart configuration. The USM can easily be adapted to your application by means of the integrated Web-Server. The parameterisation of the communication interfaces by Drag & Drop as well as parameter import from Excel allow for intuitive and fast configration of the annunciators!


IEC 60870-5-101/104. The annunciators of the series USM provide serial as well as network interfaces for communication to superior or inferior systems. The communication can be carried out over the serial interface with the protocol IEC 60870-5-101 or via ethernet with the protocol IEC 60870-5-104.


Multilink. Each annunciator of the series USM can maintain up to four links for the protocols IEC 60870-5-101 and -104 respectively at the same time. The communication can be carried out in parallel as well as in redundant groups.


Annunciator-Server USS. The USS offers the possibility to transmit alarms from many USM annunciators to a SCADA system concentrated in one link. Additionally, individual collective reports can be formed, single alarms can be routed and selected alarms can be transmitted to indication devices.




Analog cards with threshold monitoring. With the new analog cards a maximum of 20 analog values can be processed in one device.
Voltage ranges between 0V and +/- 10V or currents between 0 (4) … 20mA can be applied individually to each input. The highlight is that the values can be provided on on all protocol types i.e. IEC 61850, 60870-5-104 or Modbus, else signaling the under or overrun of a threshold via the digital inputs. Additionally in between or out of range monitoring is provided.

The analog cards can be mixed with other cards such as relay cards. The whole configuration is carried out through the integrated web server, on which as well the physical SI can be shown, e.g. 43,27°C.