Seg MRU3-1, Руководство пользователя

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14 TB MRU3-1 12.00 E
5.8 Fault memory
When the relay is energized or is energized or trips,
all fault data and times are stored in a non-volatile
memory manner. The
MRU3-1
is provided with a fault
value recorder for max. five fault occurrences. In the
event of additional trippings always the oldest data set
is written over.
For fault indication not only the trip values are re-
corded but also the status of LEDs. Fault values are in-
dicated when push buttons <-> or <+> are pressed
during normal measuring value indication.
•
Normal measuring values are selected by pressing
the <SELECT/RESET> button.
•
When then the <-> button is pressed, the latest fault
data set is shown. By repeated pressing the <->
button the last but one fault data set is shown etc.
For indication of fault data sets abbreviations FLT1,
FLT2, FLT3, ... are displayed (FLT1 means the latest
fault data set recorded). At the same time the pa-
rameter set active at the occurence is shown.
•
By pressing <SELECT/RESET> the fault measuring
values can be scrolled.
•
By pressing <+> it can be scrolled back to a more
recent fault data set. At first FLT8, FLT7, ... are al-
ways displayed.When fault recording is indicated
(FLT1 etc), the LEDs flash in compliance with the
stored trip information, i.e. those LEDs which
showed a continuous light when the fault occured
are now blinking to indicate that it is not a current
fault. LEDs which were blinking during trip condi-
tions, (element had picked up) just briefly flash.
•
If the relay is still in trip condition and not yet reset
(TRIP is still displayed), no measuring values can be
shown.
•
To delete the trip store, the push button combina-
tion <SELECT/RESET> and <->, has to be pressed
for about 3s. The display shows “wait”.
Recorded fault data:
Measuring Displayed value Correspond-
ing LED
Voltage L1; L2; L3; star
L1/L2; L2/L3: L3/L1
delta L1; L2; L3
Time stamp
Date:
Y = 99
M = 03
D = 10
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Time: h = 17
m = 21
s = 14
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