ABB REC650 ANSI - Page 271

execute command
phase A
t1>tExecutionFB, then
long-operation-time in
'cause' is set
open
close
close
open
phase C
close
open
phase B
t1
tExecutionFB
timer
command termination
phase A
command termination
phase B
command termination
phase C
command termination
circuit breaker
open
close
* The command termination will be delayed one execution sample.
*
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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 synchronism-check conditions are
not fulfilled.
execute command
SY_INPRO
SYNC_OK
t2>tSynchronizing, then
blocked-by-synchronism
check in 'cause' is set
tSynchrocheck
t1
START_SY
tSynchronizing
t2
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Figure 119: tSynchroCheck and tSynchronizing
1MRK 511 287-UUS A Section 10
Control
265
Technical manual