Siemens siprotec 7SA522, User Manual

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Control During Operation
7-9
7SA522 Manual
C53000-G1176-C119-2
7.1.1.4 Saving and Erasing the Messages
Normally, erasing the messages is not necessary because the oldest messages are
automatically erased when new events are entered, if the memory is full at the time.
However, erasure of the stored messages may be useful, for instance, after revision
of the plant, so that in the future the memory only contains information about actual
events. Erasing the memory takes place separately for each of the message groups.
From the
Device Front If erasure is desired, first press the key. The
0$,10(18
appears. The first menu
item
$QQXQFLDWLRQ
is marked.
Press the key to enter the
$1181&,$7,21
menu (see Figure 7-1).
Using the key, select the item
6HW5HVHW
, and switch to the sub-menu using the
key.
Here, select the message group to be erased using the key, and then press the
key. See Figure 7-10 as an example.
Password No. 5 (for setting changes) is required at this point. After entering the pass-
word and confirming with the
key, the safety question “
$UH\RXVXUH
?” ap-
pears. The response “
<(6
” is the default (Figure 7-10). Confirm with the key, if
the message group should really be erased. If the message group should not be
erased, press the
key so that the response “
12
” is highlighted, and confirm this an-
swer with the key. Before confirming with the key, the responses can be tog-
gled between “
<(6
” and “
12
” using the and keys. Alternatively, the key can
be pressed to cancel the erasure procedure.
Figure 7-10 Erasing messages from the front panel
Note:
When the Trip Log (fault messages) is erased, then the fault records are erased, too,
and all corresponding counters are set to zero. If, however, a fault record is erased (cf.
Sub-section 7.1.4), the fault messages are unaffected.
MENU
ENTER
ENTER
ENTER
ENTER ENTER
ESC
6(75(6(7
! (YHQW/RJ
! 7ULS/RJ
Etc
Select the associated message group or
press the associated number key to select
the messages to be erased.
$UH\RXVXUH"
! <(612
Confirm “
<(6
” with the key and com-
plete the erasing of the selected messag-
es, or switch to “
12
” with the key and
cancel the erasure with the key.
ENTER
ENTER
ENTER
3:3DUDPHWHU&KDQJH" Enter Password No. 5 (for setting change)
and confirm with
ENTER