Function Diagrams - Siemens SINAMICS S120 System Manual

Function diagrams

An overview of the function charts for the grid infeed is shown in the following. They are
arranged in the schematic according to the function modules described above.
The function diagrams for the corresponding firmware versions are included in the
"SINAMICS S120/S150 List Manual".
Table 9- 1
Function diagram No.
Table 9- 2
Function diagram No.
Table 9- 3
Function diagram No.
Table 9- 4
Function diagram No.
Table 9- 5
Function diagram No.
Grid infeed
System Manual, 04/2015, A5E03347436A
Line transformer
Function diagram name
7987 Line transformer - negative sequence system controller
7988 Line transformer - island grid black start sequence control
7989 Line transformer - island grid synchronization sequence control
7990 Line transformer - transformer model
7991 Line transformer - line filter monitoring
7992 Line transformer - PLL2 (phase locked loop 2)
7993 Line transformer - transformer magnetization voltage threshold
7994 Line transformer - transformer magnetization sequence control
Grid control
Function diagram name
7982 Line control - line droop voltage correction
7983 Line control - Direct component control, harmonics control
7984 Line control - modulation depth control
7986 Line control - sequence control overcurrent
Dynamic grid support
Function diagram name
7996 Dynamic grid support - characteristic
7997 Dynamic grid support - current limitation
7998 Dynamic grid support - sequence control
7999 Dynamic grid support - line monitoring, anti-islanding
Supplementary controls
Function diagram name
8945 Reactive current/apparent current limits
Cos phi display
Function diagram name
8951 Cos phi display
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