ABB Relion 670 series - Page 850

select
tResResponse
timer
reservation granted RES_GRT
t1>tResResponse, then 1-
of-n-control in 'cause' is
set
t1
reservation request RES_RQ
IEC05000093-2-en.vsd
IEC05000093 V2 EN-US
Figure 441: tResResponse
The timer tExecutionFB supervises the time between the execute command and the command
termination, see Figure 442.
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.
*
en05000094_ansi.vsd
ANSI05000094 V1 EN-US
Figure 442: 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.
The parameter
tSynchronizing is used to define the maximum allowed time between the start
signal for synchronizing and the confirmation that synchronizing is in progress.
Section 14 1MRK 502 066-UUS B
Control
844
Technical manual