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9.2
Units connected to the RS485 interface
Up to sixteen Display Units type Alert Annunciation Units 1736 and/or External
Presentation Units (1728) can be connected to the built-in RS485 interface (J4:37-38) in
FT1020G3. Connections, see drawing F732-03.
Note: Display Unit software version > 1.4.1 is required.
Address and S/W mode settings
The display and the push buttons (in the unit) are used to set the address, which also can
be changed via FT1020G3. The S/W mode must be set to xxxx – 1587 (xxxx = type
number). See the Technical Manual of 1728 and 1736.
The first unit is to have the address 00, the second unit address 01 and so on
the Address setting instructions in the Technical Manual for each unit.
"Selective alarm presentation" can be programmed Via EBLWin, i.e. you can select which
alarms to be presented in each unit, see the Technical Manual for the unit respectively.
9.2.1
Alert Annunciation Units
When the Alert Annunciation (AA) function is to be used in system FT1020G3, a unit is
required for the related manoeuvres, i.e. to acknowledge / reset the AA alarms. For a
detailed description of the Alert Annunciation function, see chapter "Alert Annunciation",
page 114.
1736
Alert Annunciation Unit (AAU). A compact size enclosure 145H x 220W x 50D mm
made of grey high impact ABS. Fitted with a supplementary "O" ring gasket, it
complies with IP61, in respect of dust and moisture. The unit has no door, i.e. the
front is accessed directly but the push buttons are disabled until an alarm is
received. The unit should be wall mounted. Two compression glands are included.
All or selected fire alarms will be presented in a display (alphanumeric LCD, 2x40
characters), with back-light. An alarm text will also be presented together with each
alarm, if programmed in FT1020G3. Furthermore, at least 617 texts can be stored
for selected fire alarms in the unit and will in such a case be shown, instead of the
texts sent out from FT1020G3 for these alarms. These text messages will be
downloaded to the unit via FT1020G3. A built-in buzzer will sound to indicate a
non-acknowledged AA alarm.
New software versions can be downloaded directly in the unit. The unit is powered
from FT1020G3 or an external power supply.
The unit has the following LEDs:
Fire and Alarms queued, indicating fire / AA alarm.
Operation, indicating that the unit is in operation, i.e. the AA function is enabled in
the system. A time channel can be used to enable the AA function.
Fire brigade alerted, indicating that the "Fire brigade TX" output is activated in
FT1020G3 due to:
Acknowledge, indicating that the AA alarm has been acknowledged.
73
The connection order on the line is not dependent on the unit address.
the activated fire alarm is not an AA alarm
the AA function has been terminated, e.g. the acknowledge or investigation
time respectively has run out, etc.
68
Technical/Programming Manual
FT1020G3 Rev 2.2.1
73
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