Fault Recording in the Bay Unit (”Local Fault Recording”)
183
7SS52 V4 Manual
C53000-G1176-C182-3
T-PRE The parameter T-PRE (7411/BU) is used to set the pre-trigger time for starting the
fault recording. The pre-trigger time starts at the specified time before the storage cri-
terion for fault record storage is fulfilled. The storage criterion is selected with the pa-
rameter INITIATION
(7402/BU).
T-POST The parameter T-POST (7412/BU) is used to set the post-fault time for stopping the
fault recording. The post-fault time begins as soon as the stop criterion for fault record
storage is fulfilled.
T-BINARY IN The parameter T-BINARY IN
(7431/BU) is used to set the storage time when fault
recording is initiated via a binary input. The total storage time is the sum of this param-
eter plus the pre-trigger and the post-fault time. With this parameter set to infinite, the
fault recording runs for as long as the binary input is energized. It cannot, however,
run for longer than the maximum storage time. To set the parameter to infinite, incre-
ment the value for this parameter with the arrow keys until the symbol ”
∞” appears.
T-KEYBOARD The parameter T-KEYBOARD
(7432/BU) is used to set the storage time when fault re-
cording is initiated from the membrane keyboard on the operator panel.
5.13.3 Settings of the Bay Unit
Addr. Parameters Setting Options Default Settings Comments
7402 INITIATION STORAGE BY FD.
STORAGE BY TRIP
START WITH TRIP
STORAGE BY
TRIP
Start/storage criterion for fault
recording
7410 T-MAX 0.30 .. 5.00 s 2.00 s Maximum time period available
for one fault record
7411 T-PRE 0.05 .. 0.50 s 0.20 s Pre-trigger time for fault record-
ing
7412 T-POST 0.05 .. 0.50 s 0.20 s Post-fault time for stopping the
fault recording after the fault cri-
terion disappears
7431 T-BINARY IN 0.10 . .5.00 s
infinite
0.40 s Storage time when fault record-
ing is initiated via a binary input
7432 T-KEYBOARD 0.10 .. 5.00 s 0.40 s Storage time when fault record-
ing is initiated via the membrane
keyboard
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