The alarm is always Enabled and Latched when both breaker feedback functions are configured for the breaker. The alarm action is
Warning for external breakers and Block for all other breakers.
Table 5.33 Default parameters
Parameter Range Default
Delay 0.1 to 5.0 s 1.0 s
INFO
If only one or no breaker feedbacks are configured in the Input/output for the breaker, then the parameters are not visible.
All controllers in section under switchboard control
If the Breaker position failure alarm is activated, the controller cannot be sure whether the breaker is open or closed. The power
management system therefore forces all the controllers in the section under switchboard control. The controllers remain under
switchboard control until the position failure is fixed.
5.5.7 Breaker trip (external)
This alarm alerts the operator to an externally-initiated breaker trip.
The alarm is activated if the controller did not send an open signal, but the breaker feedback
shows that the breaker is open.
Closed
Open
Breaker
Time
Delay
Configure the parameters under Configure > Parameters > Breakers > [Breaker] monitoring > Tripped (external).
For the tie breaker, the alarm action is always Trip tie breaker and Latched. For all other breakers, the alarm action is always Block
and Latched.
The delay is always 0.1 s.
Table 5.34
Default parameters
Parameter Range Default
Enable Not enabled, Enabled Enabled
Inhibit Controller under SWBD control
5.5.8 Breaker short circuit
The alarm response is based on the digital input with the
Breaker > Feedback > [*B] short
circuit function (see below). This digital input is typically wired to the breaker's short circuit
feedback.
0
1
Breaker >
Feedback >
Short circuit
Time
Configure the parameters under Configure > Parameters > Breakers > [Breaker] monitoring > Short circuit. The alarm action is
Trip [Breaker].
DESIGNER'S HANDBOOK 4189340911K UK Page 164 of 521
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