ABB RET650 Technical Manual page 594

Section 17
Basic IED functions
588
Task time group 1
(5ms)
SMAI_20_1:1
BLOCK SPFCOUT
DFTSPFC AI3P
REVROT AI1
GRP1L1 AI2
GRP1L2 AI3
GRP1L3 AI4
GRP1N AIN
Task time group 1 (5ms)
SMAI instance 3 phase group
SMAI_20_1:1 1
SMAI_20_2:1 2
SMAI_20_3:1 3
SMAI_20_4:1 4
SMAI_20_5:1 5
DFTRefGrp7
SMAI_20_6:1 6
SMAI_20_7:1 7
SMAI_20_8:1 8
SMAI_20_9:1 9
SMAI_20_10:1 10
SMAI_20_11:1 11
SMAI_20_12:1 12
IEC11000284 V1 EN
Figure 260: Configuration for using an instance in task time group 1 as DFT
reference
Assume instance SMAI_20_7:1 in task time group 1 has been selected in the
configuration to control the frequency tracking (For the SMAI_20_x task time
groups). Note that the selected reference instance must be a voltage type.
For task time group 1 this gives the following settings:
For SMAI_20_1:1
DFTRefExtOut set to DFTRefGrp7 so as to route SMAI_20_7:1 reference to the
SPFCOUT output, DFTReference set to DFTRefGrp7 so that SMAI_20_7:1 is used as
reference.
For SMAI_20_2:1 to SMAI_20_12:1
DFTReference set to DFTRefGrp7 so that SMAI_20_7:1 is used as reference.
For task time group 2 this gives the following settings:
For SMAI_20_1:2 to SMAI_20_12:2
DFTReference set to External DFT ref to use DFTSPFC input as reference.
Task time group 2
(20ms)
SMAI_20_1:2
BLOCK SPFCOUT
DFTSPFC AI3P
REVROT AI1
GRP1L1 AI2
GRP1L2 AI3
GRP1L3 AI4
GRP1N AIN
Task time group 2 (20ms)
SMAI instance 3 phase group
SMAI_20_1:2 1
SMAI_20_2:2 2
SMAI_20_3:2 3
SMAI_20_4:2 4
SMAI_20_5:2 5
SMAI_20_6:2 6
SMAI_20_7:2 7
SMAI_20_8:2 8
SMAI_20_9:2 9
SMAI_20_10:2 10
SMAI_20_11:2 11
SMAI_20_12:2 12
IEC11000284-1-en.vsd
1MRK 504 135-UEN A
Technical manual