Panasonic Electric Works Nordic AB
MEW01297 Rev: 2
Technical Description External Presentation Unit 1728, ver. 1.4.x
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13
Operation
In normal operation (quiescent condition) the LED "L6" (Operation) is
turned on, the display is blank (back-light off) and the buttons are not
possible to use.
NOTE!
In the ext. Presentation unit 1728 there has to be an alarm activated in
order to get access to the buttons. If the buzzer sounds in case of a
fault in the system, it can be silenced by the push button "P2" (Silence
buzzer). The unit also has, a "test function", i.e. if you press push
buttons "P1" (black) and "P2" (yellow) simultaneously, the buzzer
will sound (cont.), all LEDs will be turned on and all dots will be
shown in the display (plus back-light).
Pre-warnings, co-incidence
3
, fire alarms and heavy smoke / heat
alarms will be presented like in the c.i.e. the ext. Presentation unit is
connected to including a user programmable text message (alarm
text), if programmed.
See also chapter "Selective alarm presentation, page 7.
Any not corrected / serviced fault and not acknowledged fault in the
system will be presented as "General fault in system".
The buzzer sounds for any not acknowledged fault in the system.
2
Any disablement in the system will be presented as "General
disablement in system".
2
Fire alarm reset has to be done in any ext. FBP or c.i.e.
When all fire alarms are reset, all ext. Presentation units will return to
normal operation (quiescent condition).
Faults have to be acknowledged in any c.i.e.
The following page / figure show an operation summary overview for
the ext. Presentation unit 1728.
See also chapter "SW mode & Address setting, page 12.
NOTE!
The ext. Presentation unit in the figure is only schematic, i.e.
the positions of the different LEDs, push buttons, etc. are not
according to Figure 2, on page 9.
