Pre-Defined Cfc Charts - Siemens SIPROTEC 7SJ62 Manual

Appendix
A.5 Default Settings
A.5.6

Pre-defined CFC Charts

Some CFC charts are already supplied with the SIPROTEC device. Depending on the variant the following
charts may be implemented:
Device and System Logic
The NEGATOR block assigns the input signal „DataStop" directly to an output. This is not directly possible
without the interconnection of this block.
Figure A-64 Logical links between input and output
Setpoints MV
Using modules on the running sequence "measured value processing", a low current monitor for the three
phase currents is implemented. The output message is set high as soon as one of the three phase currents
falls below the set threshold:
Figure A-65 Undercurrent monitoring
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SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008