ABB REG650 ANSI, Техническое руководство

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The total recording time, tRecording, of a recorded disturbance is:
tRecording =
PreFau PostFaultrecT or PreFau TimeLimit, depending on which
criterion stops the current disturbance recording
PreFaultRecT
TimeLimit
PostFaultRecT
en05000487.vsd
1 2 3
Trig point
IEC05000487 V1 EN
Figure 255: 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
PreFaultRecT to set this time.
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
TimeLimit the limit
time).
PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all
activated triggers are reset. Use the setting
PostFaultRecT to set this time.
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
TimeLimit to set this time.
14.4.6.9 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).
1MRK 502 048-UEN A
Section 14
Monitoring
531
Technical manual