ABB REC650 - Page 257

execute command
position L1
t1>tExecutionFB, then
long-operation-time in
'cause' is set
open
close
close
openposition L3
close
openposition L2
t1
tExecutionFB
timer
cmd termination L1
cmd termination L2
cmd termination L3
cmd termination
position
open
close
* The cmd termination will be delayed one execution sample.
*
en05000094.vsd
IEC05000094 V1 EN
Figure 118: 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.
execute command
SY_INPRO
SYNC_OK
t2>tSynchronizing, then
blocked-by-synchrocheck in
'cause' is set
tSynchrocheck
t1
START_SY
tSynchronizing
t2
en05000095.vsd
IEC05000095 V1 EN
Figure 119: tSynchroCheck and tSynchronizing
1MRK 511 287-UEN A Section 10
Control
251
Technical manual