
33
10.
Viewing events
REF 542plus records the last 30 protection events (start, trips, block and other). This
internal memory is managed as a circular buffer, for example the 31st event
overwrites the 1st oldest one. In case of a power loss, events are kept because they
are stored in the non-volatile memory.
For each event, the following information is recorded: involved protection function,
event type, relevant measurement (current, voltage, frequency), date and time (up to
milliseconds). Events are displayed using the full screen; the single line diagram is
thus not visible.
A051344
Fig. 10.-1
Events display
To display the protection events, select the
Start/Trip
menu with the navigation
buttons. Use UP
and DOWN
to browse through the events.
Multifunction Protection and Switchgear Control Unit
Operator's manual
REF 542plus
REF 542plus
1MRS755869
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