32
Connections
Installation manual
7.4
NAC Outputs (Notification Application Circuit)
7.4.1
Alarm NAC
The
ALARM NAC
(paragraph
4.2 - [A1]
) is a fuse-protected, supervised-silenceable output which is to be
connected to the alarm signalling devices.
This output will activate when FIRE ALARM conditions are detected. In the event of activation, the output
will supply a 24V current in accordance with the polarity indicated on the terminals.
During the STANDBY phase a low supervisory current with reverse polarity (with respect to the silk-
screened indications on the motherboard) circulates on the line. The diodes (connected in series to the
loads) will direct the current to the EOL resistor which must be connected in parallel to the last device
(refer to
Figure 21 - Wiring diagram of the ALARM NAC, FAULT OUT, NAC1, NAC2 and NAC3 outputs
).
7.4.2
Fault output
The
FAULT OUT
(paragraph
4.2 - [Z]
) is a fuse-protected, supervised-silenceable output which is to be
connected to the fault signalling devices (LEDS, etc.).
This output will activate when fault conditions are detected. In the event of activation, the output will
supply a 24V current in accordance with the polarity indicated on the terminals.
During the standby phase,
a low supervisory current with reverse polarity (with respect to the silk-
screened indications on the motherboard) circulates on the line. The diodes (connected in series to the
loads) will direct the current to the EOL resistor which must be connected in parallel to the last device
(refer to
Figure 21 - Wiring diagram of the ALARM NAC, FAULT OUT, NAC1, NAC2 and NAC3 outputs
).
7.4.3
NAC1, NAC2 and NAC3 outputs
The
NAC1
,
NAC2
and
NAC3
outputs (paragraph
4.2 - [A2]
) are programmable generic outputs, protected
by a 1A fuse. They can be connected to various types of signaling and control devices (pressure valves, fire
doors, etc.).
These outputs will activate in accordance with programming. In the event of activation, the output will
supply a 24V current in accordance with the polarity indicated on the terminals.
During the standby phase, a low supervisory current with reverse polarity (with respect to the silk-
screened indications on the motherboard) circulates on the line. The diodes (connected in series to the
loads) will direct the current to the EOL resistor which must be connected in parallel to the last device
(refer to
Figure 21 - Wiring diagram of the ALARM NAC, FAULT OUT, NAC1, NAC2 and NAC3 outputs
).
Figure 21 - Wiring diagram of the ALARM NAC, FAULT OUT, NAC1, NAC2 and NAC3 outputs
7.5
PL Terminal
These terminals can be used to provide “Shutdown” signaling.
The Normally Open
PL
terminal (paragraph
4.2 - [T]
) closes to
GND
(ground) in the event of control panel
shutdown (mains and battery power failure).l
YELLOW
VIOLET
ORANGE
GOLD
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