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USM Annunciator

The USM series annunciators offers all functions of a classical fault annunciator for processing and display of alarms. Additionally all alarms as well as acknowledgement and device information are available on communication interfaces acc. to IEC 60870-5- 101/104 or IEC 61850.

  • 8 / 16 / 24 / 32 / 40 / 48 signal inputs with corresponding LED display
  • Integrated logic for assignment of in- and outputs
  • Ethernet-interface with communication proto- cols IEC 61850 and/or IEC 60870-5-104
  • Serial interface with communication protocol IEC 60870-5-101
  • Realisation of redundant communication structures by means of Multilink- and multiple interfaces.
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USM – Panel-mounted fault annunciator.

  • Annunciators for panel mounting with 8, 16, 24, 32, 40 and 48 signal inputs
  • Status retention of inputs and sequence in case of power failure
  • Cascading of multiple devices to an annunciating system with up to 192 alarms possible
  • Sealed front panel, protection class IP 54
  • Integrated push buttons, function inputs, function relays, self-monitoring and internal horn
  • All established reporting sequences implemented, USM parameterisable by Web-Server
  • USM with communication interfaces acc. to IEC 60870-5-101/-104 or IEC 61850
  • Optional integrated repeat-relays or DIN-rail modules for forwarding of single alarms
  • Supply and signal voltages from 12 V … 250 V AC/DC
  • Redundant power supply in two voltage ranges available as option
  • Very bright bicolour-LEDs with large viewing angle and slide-in pockets for individual labelling of LEDs and push buttons
  • Labelled plug-in screw terminals, optionally push-in terminals.


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