ABB RELION 670 Series Technical Manual page 1269

1MRK 502 066-UUS B
Name
AI4
AI5
AI6
Table 980: SMMI Output signals
Name
AI1
AI2
AI3
AI4
AI5
AI6
21.8.4 Operation principle
The Signal matrix for mA inputs (SMMI) function, see figure 637, receives its inputs from the real
(hardware) mA inputs (the MIM boards) via the Signal Matrix Tool (SMT), and makes them available
to the rest of the configuration via its analog outputs, named AI1 to AI6. The inputs, outputs, as
well as the whole block, can be given user-defined names which will be represented in SMT and
ACT.
The outputs on SMMI can also be connected to the IEC61850 generic communication I/O functions
(MVGAPC) for further use of the mA signals elsewhere in a substation system.
21.9 Signal matrix for analog inputs SMAI
21.9.1 Functionality
Signal matrix for analog inputs (SMAI), also known as the preprocessor function block, analyses
the connected four analog signals (three phases and neutral) and calculates all relevant
information from them like the phasor magnitude, phase angle, frequency, true RMS value,
harmonics, sequence components and so on. This information is then used by the respective
functions connected to this SMAI block in ACT (for example protection, measurement or
monitoring functions).
Technical manual
Type Default Description
REAL 0 SMT connected milliampere input
REAL 0 SMT connected milliampere input
REAL 0 SMT connected milliampere input
Type Description
REAL Analog milliampere input 1
REAL Analog milliampere input 2
REAL Analog milliampere input 3
REAL Analog milliampere input 4
REAL Analog milliampere input 5
REAL Analog milliampere input 6
Section 21
Basic IED functions
PID-3832-OUTPUTSIGNALS v4
SEMOD55908-4 v5
SEMOD55751-1 v2
SEMOD55744-4 v10
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