Logical Trigger - Siemens SIMEAS R-PMU Manual

7.2.1.2.3

Logical Trigger

A logical trigger can comprise two to eight single triggers combined by a logical AND.
A maximum of 8 logical triggers can be defined in a SIMEAS R-PMU. In a parameterization
dialog, logical triggers are named Pattern or Logical Group (see chapter 12.12.5).
Time window for logical triggers
The trigger conditions for a logical trigger do not have to be met simultaneously. It is sufficient if
they occur within the parameterized time window (time frame for logical trigger). The first trigger
starts the time frame for logical trigger. If all conditions of a logical trigger are met within this time
window, the recording will be started after this time has elapsed (see figure 7-11). The record is
provided with the trigger time stamp at the end of the time frame for the logical trigger.
Trigger condition 1
Channel A
Time frame for logical
trigger
Fault record
Figure 7-11 Recording of a fault record when all conditions of a logical trigger are met during the time frame
Note
All channels used in a/an (active) logical trigger pattern are inactive as single triggers.
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
Trigger condition 2 Trigger condition 1
Time frame for
logical trigger
Prefault time
Recording of fault record
7
7.2 Fault Recorders
t
Recording time
t
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