Recording Times - ABB REG650 Technical Manual

Section 13
Monitoring
13.6.6.8
13.6.6.9
408

Recording times

Disturbance report DRPRDRE records information about a disturbance during a
settable time frame. The recording times are valid for the whole disturbance report.
Disturbance recorder, event recorder and indication function register disturbance
data and events during tRecording, the total recording time.
The total recording time, tRecording, of a recorded disturbance is:
PreFaultrecT + tFault + PostFaultrecT or PreFaultrecT + TimeLimit , depending on
tRecording =
which criterion stops the current disturbance recording
Trig point
PreFaultRecT
1
IEC05000487 V1 EN
Figure 201: The recording times definition
PreFaultRecT, 1 Pre-fault or pre-trigger recording time. The time before the fault including the
operate time of the trigger. Use the setting
tFault, 2 Fault time of the recording. The fault time cannot be set. It continues as long as
any valid trigger condition, binary or analog, persists (unless limited by
the limit time).
PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all
activated triggers are reset. Use the setting
TimeLimit Limit time. The maximum allowed recording time after the disturbance recording
was triggered. The limit time is used to eliminate the consequences of a trigger
that does not reset within a reasonable time interval. It limits the maximum
recording time of a recording and prevents subsequent overwriting of already
stored disturbances. Use the setting
Analog signals
Up to 40 analog signals can be selected for recording by the Disturbance recorder
and triggering of the Disturbance report function. Out of these 40, 30 are reserved
for external analog signals from analog input modules via preprocessing function
blocks (SMAI) and summation block (3PHSUM). The last 10 channels may be
connected to internally calculated analog signals available as function block output
signals (phase differential currents, bias currents and so on).
TimeLimit
PostFaultRecT
2
TimeLimit to set this time.
1MRK 502 034-UEN -
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en05000487.vsd
PreFaultRecT to set this time.
TimeLimit
PostFaultRecT to set this time.
Technical Manual