ANSI09000209-1-en.vsd
Synchro
check
OR
SCSWI
SXCBR
CLOSE
SYNC_OK
EXE_CL
Synchronizing
function
SY_INPRO
START_SY
CLOSECMD
SESRSYN
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
tSelect
timer
execute command
t1
t1>tSelect, then long-
operation-time in 'cause'
is set
en05000092.vsd
IEC05000092 V1 EN
Figure 175:
tSelect
The timer
tExecutionFB
supervises the time between the execute command and the
command termination, see figure
.
1MRK 502 048-UUS A
Section 12
Control
375
Technical manual
