ABB RELION 670 Series Technical Manual page 1092

Section 16
Monitoring
External analog
signals
ANSI10000029 V1 EN-US
Figure 564: Analog input function blocks
The external input signals will be acquired, filtered and skewed and (after configuration) available
as an input signal on the AxRADR function block via the SMAI function block. The information is
saved at the Disturbance report base sampling rate (1000 or 1200 Hz). Internally calculated signals
are updated according to the cycle time of the specific function. If a function is running at lower
speed than the base sampling rate, Disturbance recorder will use the latest updated sample until a
new updated sample is available.
If the IED is preconfigured the only tool needed for analog configuration of the Disturbance report
is the Signal Matrix Tool (SMT, external signal configuration). In case of modification of a
preconfigured IED or general internal configuration the Application Configuration tool within
PCM600 is used.
The preprocessor function block (SMAI) calculates the residual quantities in cases where only the
three phases are connected (AI4-input not used). SMAI makes the information available as a group
signal output, phase outputs and calculated residual output (AIN-output). In situations where AI4-
input is used as an input signal the corresponding information is available on the non-calculated
output (AI4) on the SMAI function block. Connect the signals to the AxRADR accordingly.
For each of the analog signals,
recorder. The trigger is independent of the setting of
Disabled . Both undervoltage and overvoltage can be used as trigger conditions. The same
set to
applies for the current signals.
Operation = Disabled , no waveform (samples) will be recorded and reported in graph. However,
If
Trip value, pre-fault and fault value will be recorded and reported. The input channel can still be
used to trig the disturbance recorder.
Operation = Enabled , waveform (samples) will also be recorded and reported in graph.
If
1086
SMAI
Block AI3P
^GRP2_A AI1
^GRP2_B AI2
^GRP2_C AI3
^GRP2_N AI4
Type
AIN
Internal analog signals
Operation = Enabled means that it is recorded by the disturbance
A1RADR
A2RADR
INPUT1
A3RADR
INPUT2
INPUT3
INPUT4
INPUT5
INPUT6
...
A4RADR
INPUT31
INPUT32
INPUT33
INPUT34
INPUT35
INPUT36
...
INPUT40
ANSI10000029-1-en.vsd
Operation , and triggers even if operation is
1MRK 502 066-UUS B
Technical manual