126 6LE008146B
Alarm management
7.10 Programming the OAC module
The OAC output contacts module can be used to signal an event locally.
The OAC contacts are assigned by default to the following events.
Contact Event
DO1 Long time delay trip
DO2 Grouped alarm (configured in Short time delay, Instantaneous or MCR)
DO3 Tripping of the earth fault protection
DO4 PTA1 overload pre-alarm
DO5 HWF protection tripping (electronic trip unit failure)
Programming the OAC output contacts module allows each of the 5 output contacts to be
reassigned to an alarm, trip or operational event.
Here is the list of events available for assignment.
The OAC output contacts module is programmed from the sentinel Energy display or the
Hager Power setup software.
CAUTION
Successive restarts of the sentinel Energy trip unit may cause the output contacts'
assignments to be lost.
Check the assignment of the output contacts after the sentinel Energy trip unit is restarted.
Event Section Output contact mode
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