Current Sum Cmsum (Ansi Csum) - ABB RELION REX640 Technical Manual

1MRS759142 F
Parameter Values (Range)
1=Reset
Load counter
0=Cancel
1=Load
3.20.18.7 Monitored data
Table 273: UDFCNT Monitored data
Name
CNT_VAL
3.20.19

Current sum CMSUM (ANSI CSUM)

3.20.19.1 Identification
Function description
Current sum
3.20.19.2 Function block
Figure 158: Function block
3.20.19.3 Functionality
The current sum function CMSUM is a phase-by-phase specific summing function
for two current triplets. Output I3P can be used as normal current input for the
application functions using current. Different measurement modes (DFT, RMS, Peak-
to-peak) are supported. Also, positive, negative and zero-sequence components are
calculated for the summed currents. Output IRES provides the calculated residual
current based on the summed currents.
Example configuration:
REX640
Technical Manual
Unit Step Default
0=Cancel
Type Values (Range)
INT64 0...2147483647
IEC 61850
identification
CMSUM
Basic functions
Description
Loads the counter to preset val-
ue
Unit Description
Output counter
value
IEC 60617 ANSI/IEEE C37.2
identification device number
CSUM CSUM
283