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4 Measurands and Recording
4.1 Measuring and Recording System
4.1.2.5 Fault Recorder
After a trigger has been activated, the fault recorder records the sampled values of voltage curves and/or cur-
rent curves. A trigger is activated when a measured value exceeds or falls short of a parameterized threshold
value. For this purpose, the trigger function block permanently compares the measured V
declared input voltage Udin or I
pled values) as soon as parameterized threshold values are violated in either direction. The fault record is writ-
ten to the device-internal memory card for subsequent evaluation.
The fault recording ends is according to the configured recording duration.
The triggers for voltage and current monitoring can be parameterized separately and can be switched on and
off individually. No recording is initiated when the trigger is switched off.
The lower and upper threshold values can be parameterized in percent or numerically.
U
din
[%]
Adjusted upper
110
limiting value of Udin
108
100
92
Adjusted lower limiting
90
value of Udin
Legende (example ):
Complete duration of the recording : 3.0 s
Pre-trigger ratio (adjusted pre -recording time ): 20 % of the adjusted t otal duration of recording
Figure 4-7
The fault recorder records 2048 sampled values per 10/12 cycles, approximately 204 samples per cycle.
36
(1/2) with rated current I
rms
Stop recording
Start
in the adjusted recording time
recording
Total duration of recording of
sampled values
< 3 s
Pre-
Recording of the disturbance
recording
in the adjusted recording time
time
Recording of the fault recorder, example
. The function block starts a fault record (sam-
rated
Hysteresis
Hysteresis
Start
recording
Total duration of recording of
sampled values
3 s
Pre-
Recording of the disturbance
recording
in the adjusted recording time
time
SENTRON PAC5100/5200, 7KM5212/5412, Device Manual
E50417-H1040-C568-A1, Edition 03.2015
(1/2) values with
rms
t [s]
Stop recording
after the end of recording time
t [s]
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