ABB REC650 Technical Manual page 256

Section 10
Control
250
synchronizing function. SCSWI will then set the attribute "blocked-by-
synchrocheck" in the "cause" signal. See also the time diagram in figure 119.
SCSWI
SYNC_OK
START_SY
SY_INPRO
SESRSYN
Synchro
check
IEC09000209 V1 EN
Figure 116: Example of interaction between SCSWI, SESRSYN (synchrocheck
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 117: tSelect
The timer tExecutionFB supervises the time between the execute command and the
command termination, see figure 118.
EXE_CL
CLOSE
OR
CLOSECB
Synchronizing
function
IEC09000209_1_en.vsd
t1
1MRK 511 287-UEN A
SXCBR
t1>tSelect, then long-
operation-time in 'cause'
is set
en05000092.vsd
Technical manual