Alarm/Warning Annunciation (Local) - ABB TruFit User Manual

Figure 4-7: Event screen showing the filter criteria

4.3.5 Alarm/warning annunciation (Local)

The PDU display unit annunciates alarms/warnings locally by the following two different means.
 Alarm/warning ring light
 Audible alarm
4.3.5.1 The alarm/warning ring light:
The alarm/warning ring light, which is located under the LCD display, can be in any of the following
three states:
Ring light state
Green (Solid)
Yellow (Solid)
Red (Blinking)
The alarm/warning ring light states (above) are non-latching. For example, the ring light will
automatically change from red to green if a warning condition disappears and there are no other
active alarms or warnings present.
See Display Module section for detailed location of ring light.
4.3.5.2 The audible alarm:
When logged in as 'admin' (or higher), the user can enable or disable the audible alarm as
mentioned in Section 3.4.4. When using this method, the new setting is permanently saved in
flash memory.
The audible alarm operates independently of the alarm/warning ring light. The audible alarm
sounds only if there is one or more alarm/warning event(s) in the log that require(s)
acknowledgement, in addition to the other caveats mentioned below. (Note that not all
alarm/warning events require acknowledgement.) Therefore, it is possible for the audible alarm to
be sounding while the alarm/warning ring light is green and for the audible alarm to be silent while
the alarm/warning ring light is red.
32 94-1100-00002874 A0 EN│TruFit™ Power Distribution Unit
Description
Normal operating condition.
No active alarms or warnings are present.
One or more active warnings are present.
One or more active alarms are present.