Shot Pointer Controller - ABB RELION 611 Series Technical Manual

Section 8
Control functions
8.2.4.3
414
• Not allowed: no automatic initiation is allowed
• When the synchronization fails, the automatic initiation is carried out when the
auto wait time elapses and the reclosing is prevented due to a failure during the
synchronism check
• When the circuit breaker does not close, the automatic initiation is carried out if
the circuit breaker does not close within the wait close time after issuing the
reclose command
• Both: the automatic initiation is allowed when synchronization fails or the circuit
breaker does not close.
The Auto init parameter defines which INIT_X lines are activated in
the auto-initiation. The default value for this parameter is "0", which
means that no auto-initiation is selected.
A070871 V1 EN
Figure 200: Example of an auto-initiation sequence with synchronization failure
in the first shot and circuit breaker closing failure in the second shot
In the first shot, the synchronization condition is not fulfilled (SYNC is FALSE).
When the auto wait timer elapses, the sequence continues to the second shot. During
the second reclosing, the synchronization condition is fulfilled and the close
command is given to the circuit breaker after the second reclose time has elapsed.
After the second shot, the circuit breaker fails to close when the wait close time has
elapsed. The third shot is started and a new close command is given after the third
reclose time has elapsed. The circuit breaker closes normally and the reclaim time
starts. When the reclaim time has elapsed, the sequence is concluded successful.

Shot pointer controller

The execution of a reclose sequence is controlled by a shot pointer. It can be adjusted
with the SHOT_PTR monitored data.
The shot pointer starts from an initial value "1" and determines according to the
settings whether or not a certain shot is allowed to be initiated. After every shot, the
1MRS757454 D
611 series
Technical Manual