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Siemens siprotec 7SA6 User Manual

Siemens siprotec 7SA6
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Appendix
A-717SA6 Manual
C53000-G1176-C156-2
Pre-defined
CFC–Charts
7SA6 contains a worksheet with the pre-defined CFC-charts:
Device and System Logic
Some of the event-controlled logical allocations are created with blocks of the slow
logic (
PLC1_BEARB = slow PLC processing).
This way, the binary input
>Data Stop is modified from a single point indication
(SP) into an internal single point indication (IntSP) by means of a negator” block.
With double point indication
GndSwit. = CLOS an indication saying feeder gnd
CLOSE and with
GndSwit. = OPEN or INT the indication feeder gnd OPEN is
generated.
The internal indication
Device Brk OPENED is created from the outgoing indication
FINAL TRIP”. Since this indication only queued for 500 ms, also indication Device
Brk OPENED
is reset after this time period.
Figure A-48 Allocation of input and output with blocks of level System Logic.
Interlocking
With blocks of level Interlocking (SFS_BEARB = interlocking), standard interlocking
for three switchgears (circuit breaker, disconnector and earth switch) is pre-defined.
Due to the large functional scope of the logic you will find this level on two worksheets.
The circuit breaker can be only be opened, if
the circuit breaker is set to OPEN or CLOS and
the disconnector is set to OPEN or CLOS and
the earth switch is set to OPEN or CLOS and
the disconnector and the earth switch are not set to CLOS at the same time and
“IN: Control Device Q8 Earth Swit DP”
“IN: Device >Data Stop SP”
“IN: P.System Data 2 Final Trip OUT
“OUT: Control Device Unlock DT IE”
“OUT: Device FdrEARTHED IE”
“OUT: Device Brk OPENED. IE”

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Siemens siprotec 7SA6 Specifications

General IconGeneral
BrandSiemens
Modelsiprotec 7SA6
CategoryRelays
LanguageEnglish

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