ABB RET650 Technical Manual page 276

Section 12
Control
270
select
execute command
tSelect
timer
IEC05000092 V1 EN
Figure 123: tSelect
The timer tExecutionFB supervises the time between the execute command and the
command termination, see figure 124.
execute command
position L1 open
close
position L2 open
close
position L3 open
close
cmd termination L1
cmd termination L2
cmd termination L3
cmd termination
position open
close
tExecutionFB
timer
* The cmd termination will be delayed one execution sample.
IEC05000094 V1 EN
Figure 124: tExecutionFB
The parameter tSynchrocheck is used to define the maximum allowed time between
the execute command and the input SYNC_OK to become true. If SYNC_OK=true at
the time the execute command signal is received, the timer "tSynchrocheck" will not
start. The start signal for the synchronizing is obtained if the synchrocheck conditions
are not fulfilled.
t1
en05000092.vsd
*
t1
en05000094.vsd
1MRK 504 135-UEN A
t1>tSelect, then long-
operation-time in 'cause'
is set
t1>tExecutionFB, then
long-operation-time in
'cause' is set
Technical manual