ABB RED650, Applications Manual

Page: 416 / 454

SMAI1
BLOCK
DFTSPFC
REVROT
^GRP1L1
^GRP1L2
^GRP1L3
^GRP1N
SPFCOUT
G1AI3P
G1AI1
G1AI2
G1AI4
G1N
NEUTRAL
PHASEL3
PHASEL2
PHASEL1
UL1L2
SAPTOF
U3P*
BLOCK
BLKTRIP TRIP
START
BLKDMAGN
FREQ
TRM_40.CH7(U)
SAPTOF(1)_TRIP
EC10000060-3-en.vsdx
IEC10000060 V3 EN-US
Figure 168: Connection example
The above described scenario does not work if SMAI setting
ConnectionType is Ph-N . If only one phase-earth voltage is
available, the same type of connection can be used but the SMAI
ConnectionType setting must still be Ph-Ph and this has to be
accounted for when setting MinValFreqMeas . If SMAI setting
ConnectionType is Ph-N and the same voltage is connected to all
three SMAI inputs, the positive sequence voltage will be zero and
the frequency functions will not work properly.
The outputs from the above configured SMAI block shall only be
used for Overfrequency protection (SAPTOF), Underfrequency
protection (SAPTUF) and Rate-of-change frequency protection
(SAPFRC) due to that all other information except frequency and
positive sequence voltage might be wrongly calculated.
21.10.3 Setting guidelines
GUID-C8D6C88B-87C6-44C1-804B-CF1594365EE6 v8
The parameters for the signal matrix for analog inputs (SMAI) functions are set via
the local HMI or PCM600.
Every SMAI function block can receive four analog signals (three phases and one
neutral value), either voltage or current. SMAI outputs give information about
every aspect of the 3ph analog signals acquired (phase angle, RMS value,
frequency and frequency derivates, and so on – 244 values in total). Besides the
block “group name”, the analog inputs type (voltage or current) and the analog
input names that can be set directly in ACT.
Application functions should be connected to a SMAI block with same task cycle
as the application function, except for e.g. measurement functions that run in slow
cycle tasks.
DFTRefExtOut : Parameter valid only for function block SMAI1 .
Reference block for external output (SPFCOUT function output).
Section 21
1MRK 505 393-UEN B
Basic IED functions
410 Line differential protection RED650 2.2 IEC
Application manual