ABB Relion Technical Manual page 381

1MRK 502 048-UUS A
Technical manual
SCSWI
SYNC_OK
START_SY
SY_INPRO
SESRSYN
Synchro
check
ANSI09000209 V1 EN
Figure 174: Example of interaction between SCSWI, SESRSYN (25) (synchronism
check and synchronizing function) and SXCBR function
Time diagrams
The Switch controller (SCSWI) function has timers for evaluating different time
supervision conditions. These timers are explained here.
The timer tSelect is used for supervising the time between the select and the execute
command signal, that is, the time the operator has to perform the command execution after
the selection of the object to operate.
select
execute command
tSelect
timer
IEC05000092 V1 EN
Figure 175: tSelect
The timer tExecutionFB supervises the time between the execute command and the
command termination, see figure 176.
EXE_CL
CLOSE
OR
CLOSECMD
Synchronizing
function
ANSI09000209-1-en.vsd
t1
Section 12
SXCBR
t1>tSelect, then long-
operation-time in 'cause'
is set
en05000092.vsd
Control
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