Functions
2.1 General
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
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2.1.2 Device, General Settings
The device requires some general information. This may be, for example, the type of annunciation to be issued
in the event of an occurrence of a power system fault.
2.1.2.1 Description
Command-dependent Messages "No Trip – No Flag"
The indication of messages masked to local LEDs and the generation of additional messages can be made
dependent on whether the device has issued a trip signal. This information is then not output if during a system
disturbance one or more protection functions have picked up but no tripping by the 7SD80 resulted because
the fault was cleared by a different device (e.g. on another line). These messages are then limited to faults in
the line to be protected.
The following figure illustrates the creation of the reset command for stored messages. By the moment of the
device dropout, the presetting of the parameter610 FltDisp.LED/LCD decides, whether the new fault will be
stored or reset.
Figure 2-1 Creation of the reset command for the latched LED and LCD messages
Spontaneous Messages on the Display
You can determine whether or not the most important data of a fault event is displayed automatically after the
fault has occurred (see also Subsection "Fault Messages" in Section "Auxiliary Functions").
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