Functional description
Alternative operating
mode
As long as the operating mode is activated, the
horn is not triggered or automatically
acknowledged after the parameterized time.
As long as this operation mode is activated, no
optical or acoustical output of alarms at issue is
triggered. The internal alarm processing as well
as triggering of relays and IEC communication
stays active though. The alarm
acknowledgement on the fault annunciator is
deactivated.
Table 3.1: Indication of alternative operating states of the USM by green flashing of the Watchdog LED "OK"
The illustration of the USM with 24 reporting channels is given here only as an
example to clarify the principle. The number of reporting channels and the LED
colors of the watchdog LEDs may vary depending on the configuration and size of
the annunciator.
During the initialisation process of the fault indicator after the restart, the three
control lamps "OK", "S1" and "S2" light up green several times in succession.
To Next Page
Loading...