Siemens SIMEAS R-PMU Manual page 270

18
18.3 Recording Functions
Transient analog recorder (TAR)
Recording of the course of voltages, currents, process and binary signals in the form of sampling
values in the case of a violation of parameterized trigger limit values.
General data
Sampling rate (constant): 192 sampling values per nominal cycle
Resolution of the binary changes: 1 kHz and a maximum of 250 changes per second and
DAU
Recording of the history: up to 1 s before the occurrence of the fault
Recording time:
via OSCOP P parameterization 30 s max.
separate setting for manual or logical trigger
in the case of an external triggering at the binary input: for the duration of the pending
external signal (30 s max.)
Recorded values of the DAUs
Table 18-14
VCDAU
V , V , V
L N
I , I , I
L N
B
Configurable trigger functions
Level trigger min/max:
Monitoring of the analog measured values for observance of min/max limit values. Triggering
is started as soon as the measured value exceeds or falls below the parameterized limit
value.
Gradient trigger:
The gradient trigger condition for AC values is met when the difference between two half-
cycle rms values at the interval of two cycles is larger than the parameterized threshold. With
DDAUs, the arithmetic means are compared at the interval of two nominal cycles. A
differentiation is made between the rising and the falling gradient.
Binary trigger:
State changes at the binary DAU inputs can be parameterized as trigger conditions. Thus, a
recording can be started when a transducer changes into the alarm state or leaves the alarm
state or at any state change.
Logical trigger:
A logical trigger can be composed of up to eight individual trigger conditions which are all
elements of one logical AND relation. Altogether, eight logical triggers can be defined in the
SIMEAS R-PMU.
270
Recorded values of the DAUs
VDAU
V , V , V
L N
B
CDAU DDAU
I , I , I
L N
D
B B
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
BDAU
B