Signal Matrix For Analog Inputs Smai; Functionality; Signal Matrix For Analog Inputs Smai_20_1; Function Block - ABB RELION 630 Series Technical Manual

1MRS757256 F
3.8
3.8.1
3.8.2
3.8.2.1
3.8.2.2
PML630/Compact Load-Shedding Solution
Technical Manual

Signal matrix for analog inputs SMAI

Functionality

Signal matrix for analog inputs function (SMAI), also known as the preprocessor
function, processes the analog signals connected to it and gives information about all
aspects of the analog signals connected, like the RMS value, phase angle, frequency,
harmonic content, sequence components and so on. This information is used by the
respective functions in Application Configuration, for example, protection,
measurement or monitoring.
The SMAI function is used within PCM600 in direct relation with the Signal Matrix
or the Application Configuration tools.

Signal matrix for analog inputs SMAI_20_1

Function block

SMAI_20_1
BLOCK SPFCOUT
DFTSPFC AI3P
REVROT AI1
^GRP1L1 AI2
^GRP1L2 AI3
^GRP1L3 AI4
^GRP1N AIN
IEC09000137-1-en.vsd
IEC09000137 V1 EN
Figure 31: SMAI_20_1 function block

Signals

Table 24: SMAI_20_1 Input signals
Name Type
BLOCK BOOLEAN
DFTSPFC REAL
REVROT BOOLEAN
GRP1L1 STRING
GRP1L2 STRING
GRP1L3 STRING
GRP1N STRING
Default Description
0 Block group 1
20.0 Number of samples per fundamental cycle used for
DFT calculation
0 Reverse rotation group 1
- First analog input used for phase L1 or L1-L2
quantity
- Second analog input used for phase L2 or L2-L3
quantity
- Third analog input used for phase L3 or L3-L1
quantity
- Fourth analog input used for residual or neutral
quantity
Section 3
Basic functions
57