ABB Relion 670 series, Technical Reference Manual, Page: 114 / 1232

4.11.2 Principle of operation
The Signal matrix for mA inputs (SMMI) function, see figure 37 , receives its inputs
from the real (hardware) mA inputs 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, as well as the whole block, can be tag-named. These tags will be
represented in SMT.
The outputs on SMMI are normally connected to the IEC61850 generic
communication I/O functions (MVGGIO) function for further use of the mA signals.
4.11.3 Function block
IEC05000440-2-en.vsd
SMMI
^VIN1
^VIN2
^VIN3
^VIN4
^VIN5
^VIN6 AI1
AI2
AI3
AI4
AI5
AI6
IEC05000440 V2 EN
Figure 37: SMMI function block
4.11.4 Input and output signals
Table 42: SMMI Input signals
Name Type Default Description
VIn1 REAL 0 SMT connected milliampere input
VIn2 REAL 0 SMT connected milliampere input
VIn3 REAL 0 SMT connected milliampere input
VIn4 REAL 0 SMT connected milliampere input
VIn5 REAL 0 SMT connected milliampere input
VIn6 REAL 0 SMT connected milliampere input
Table 43: SMMI Output signals
Name Type Description
AI1 REAL Analog milliampere input 1
AI2 REAL Analog milliampere input 2
AI3 REAL Analog milliampere input 3
Table continues on next page
Section 4
1MRK505222-UUS C
Basic IED functions
108
Technical reference manual