Functions
2.1 General
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
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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 7SK80 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. When the relay drops
off, the default setting of parameter 610 FltDisp.LED/LCD decide 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").
2.1.2.2 Setting Notes
Fault Display
A new pickup by a protection element generally turns off any previously lit LEDs so that only the latest fault is
displayed at any one time. It can be selected whether the stored LED displays and the spontaneous fault indi-
cations on the display appear upon the new pickup, or only after a new trip signal is issued. In order to select
the desired displaying mode, select the submenu Device in the SETTINGS menu. Under address 610
FltDisp.LED/LCD the two alternatives Target on PU and Target on TRIP ("No trip – no flag") can be
selected.
Use parameter 611 Spont. FltDisp. to specify whether or not a spontaneous fault message should appear
automatically on the display (YES) or not (NO).
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