20.18.2 Function block
3PHSUM
BL OCK
REVROT
^G1AI3P*
^G2AI3P*
AI3P
AI1
AI2
AI3
AI4
IEC05000441-3-en.vsdx
IEC05000441 V3 EN
Figure 515: 3PHSUM function block
20.18.3 Signals
Table 869: 3PHSUM Input signals
Name Type Default Description
BLOCK BOOLEAN 0 Block
BLKGR1 BOOLEAN 0 Block input for group 1
BLKGR2 BOOLEAN 0 Block input for group 2
REVROT BOOLEAN 0 Reverse rotation
G1AI3P GROUP
SIGNAL
- Group 1 three phase analog input from first SMAI
G2AI3P GROUP
SIGNAL
- Group 2 three phase analog input from second
SMAI
Table 870: 3PHSUM Output signals
Name
Type Description
SPFCOUT REAL Number of samples per fundamental cycle from
internal DFT reference function
AI3P GROUP SIGNAL Linear combination of two connected three phase
inputs
AI1 GROUP SIGNAL Linear combination of input 1 signals from both
SMAI blocks
AI2 GROUP SIGNAL Linear combination of input 2 signals from both
SMAI blocks
AI3 GROUP SIGNAL Linear combination of input 3 signals from both
SMAI blocks
AI4 GROUP SIGNAL Linear combination of input 4 signals from both
SMAI blocks
Section 20 1MRK502052-UEN B
Basic IED functions
1136
Technical manual