Siemens SIPROTEC 7SS523 V3.2 Manual page 175

5.6.2 Setting Notes
fault rec mode
MAX. LENGTH
PRE. TRIG. TIME
POST REC. TIME
BinIn CAPT.TIME
The parameter fault rec mode (6401A/CU) is used to specify the conditions under
which oscillographic fault records will be stored.
With setting global storage, initiation by CU, fault records will be stored
in the central unit and in all bay units if one storage criterion is fulfilled in the central
unit. On pickup of the backup protection, the fault records are stored locally. This is
the most common setting.
With setting global storage, local initiation, fault records will be stored
in the central unit and in all bay units if one storage criterion is fulfilled in the central
unit or in any of the bay units. The storage criterion is set with the parameter INITI-
ATION (7402/BU) in the bay unit (Chapter 5.13.2, page 179).
With setting local storage, local initiation, fault records will be stored in
the central unit and in the bay unit in which one storage criterion is fulfilled. The stor-
age criterion is set with the parameter INITIATION (7402/BU) in the bay unit (Chap-
ter 5.13.2, page 179).
The parameter MAX. LENGTH (6404/CU) is used to set the maximum time available
for one fault record.
The parameter PRE. TRIG. TIME (6405/CU) is used to set the pre-trigger time for
fault recording. The pre-trigger time starts at the specified time before the storage cri-
terion for fault record storage is fulfilled.
The parameter POST REC. TIME (6406/CU) is used to set the post-fault time for fault
recording. The post-fault time begins as soon as the storage criterion for fault record
storage has disappeared.
The parameter BinIn CAPT.TIME (6407/CU) is used to set the capture time of the
oscillographic fault record when the fault recording is initiated from DIGSI, from the
central unit front panel or through a binary input. To set the capture time to infinite, en-
ter ".". Even so the capture time cannot exceed the time set with the parameter MAX.
LENGTH (6404/CU), which specifies the maximum available length of a fault record-
ing.
Oscillographic Fault Recording
7SS52 V4 Manual
C53000-G1176-C182-1
159