Controlling Breaker - ABB REX 521 Operator's Manual

1MRS 751107-MUM
3.2.3.2.
Protection Relay
Operator's Manual

Controlling breaker

The object control menu is in Control\Manual control\Control CB.
Only the current position of the breaker is shown and no control is possible in remote
or control off mode. In local mode the state of the breaker is shown and the possible
target states can be scrolled with [
open and closed. When the desired target state is selected the object can be selected
by using the [E] button.
Message =Preparing... can be briefly shown before the text
=Are you sure? is displayed. The operation can then be confirmed with the [E]
button and cancelled with the [C] button. If the operation is cancelled the text
=Aborted is displayed for three seconds and then the current state of the breaker
is shown. The same happens if the =Are you sure? has been displayed for 30
seconds.
Notice that an adjustable timeout in Control\General\Select timeout
restricts the time between the object selection and the control request. If the timeout
is shorter than 30 seconds and it elapses before the operation is confirmed,
controlling the object will not be possible before the object is selected again. If the
operation is confirmed, the appropriate transition text (=Opening... or
=Closing...) is shown for at least four seconds after which the current state of
the object is shown.
→ ←
] and [ ] buttons. Possible target states are
REX 521
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