Siemens SIMEAS R-PMU Manual page 85

Retrigger blocking for analog signals
To avoid repeated triggering of the device due to limit value violations within the shortest time, a
retrigger blocking can be parameterized.
The retrigger blocking is started simultaneously with the recording time and acts for each
individual channel. If a limit value violation occurs again for the same channel within the retrigger
blocking time, this will not extend the fault record but only restart the channel-specific retrigger
blocking time (see figure 7-15). All other channels can start retriggering (see figure 7-16). The
retrigger blocking can be activated separately for every analog input.
Note
If the retrigger blocking time is defined longer than the recording time, no trigger events are
recognized during this time.
Trigger 1
Channel A
Prefault
time
Retrigger
blocking time Retrigger blocking
Fault record
Figure 7-15 Trigger 2 does not extend the recording time due to retrigger blocking
Trigger 1
Channel A
Prefault
time
Channel B
Fault record
Figure 7-16 Channel B can extend (retrigger) the fault record within the retrigger blocking time of channel A; retrigger
blocking is valid for the given channel only
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
Trigger 2
Recording time
time (restart)
Recording of fault record
Recording time
Retrigger blocking
time (channel A)
Trigger 2
Recording time (restart)
Retrigger blocking
time (channel B)
Recording of fault record
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7.2 Fault Recorders
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