SEMOD54997-4 v10SMAI2BLOCKREVROT^GRP2L1^GRP2L2^GRP2L3^GRP2NG2AI3PG2AI1G2AI2G2AI3G2AI4G2NIEC14000028-1-en.vsdIEC14000028 V1 EN-USFigure 370: SMAI2 function blockFigure 370 is an example of SMAI2:n to SMAI12:m in each of the three task timegroups 1, 2 or 3 where:• n=2 and m=12 in task group 1• n=14 and m=24 in task group 2• n=26 and m=36 in task group 3The task time defines the execution repetition rate and is 3, 8 or 1 ms, respectively,for the three task time groups.21.8.3 Signals SEMOD55773-1 v2PID-3405-INPUTSIGNALS v6Table 597:SMAI1 Input signalsName Type Default DescriptionBLOCK BOOLEAN 0 Block group 1DFTSPFC REAL 20.0 Number of samples per fundamental cycle usedfor DFT calculationREVROT BOOLEAN 0 Reverse rotation group 1GRP1L1 STRING - First analog input used for phase L1 or L1-L2quantityGRP1L2 STRING - Second analog input used for phase L2 or L2-L3quantityGRP1L3 STRING - Third analog input used for phase L3 or L3-L1quantityGRP1N STRING - Fourth analog input used for residual or neutralquantityPID-3405-OUTPUTSIGNALS v5Table 598:SMAI1 Output signalsName Type DescriptionSPFCOUT REAL Number of samples per fundamental cycle frominternal DFT reference functionG1AI3P GROUP SIGNAL Group 1 analog input 3-phase groupG1AI1 GROUP SIGNAL Group 1 analog input 1G1AI2 GROUP SIGNAL Group 1 analog input 2Table continues on next page1MRK 505 394-UEN A Section 21Basic IED functionsLine differential protection RED650 2.2 IEC 799Technical manual
