ABB 615 Series ANSI, Technical Manual

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1MAC050144-MB C
Section 7
Control functions
615 series ANSI 495
Technical Manual
Figure 267: 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.
7.2.4.3 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 shot pointer
value increases. This is carried out until a successful reclosing or lockout takes place after
a complete shot sequence containing a total of five shots.
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.