-NAC FIRE+
Type C output (EN54-1). - Silenceable,
Bypassable (Disabled), Supervised
—— Terminals
for supervised devices activated by positive (24 V):
Ø
During ALARM status —— positive (27.6 V) on ter
-
minal [+]; negative on terminal [-].
Ø
During STANDBY status —— negative on terminal
[+]; positive (27.6 V) on terminal [-].
Ø
This output can be bypassed via the DISABLE menu.
ALARM status will activate this non-programmable out
-
put.
[12V] [M]
Auxiliary power 12 V . Power supply to de
-
vices that operate at 12V (powered by the standby bat
-
teries and protected by self recover termic fuse):
Ø Positive (13.8 V) on terminal [12V];
Ø Negative on terminal [M].
Max current on terminal [12V] must not exceded
200mA.
NAC1 NAC2 and NAC3
Supervised/Silencea
-
ble/Bypassable (Disabled) Programmable Alarm
Outputs.
These Outputs are for the Alarm signalling devices.
Operating principles:
Ø in Standby status, these Outputs will be INACTIVE
(read on for details);
Output INACTIVE: negative pull-down to 0 V on [+] termi-
nal; positive pull-up to 27.6 V on the [–] terminal.
Output ACTIVE: positive pull-up to 27.6 V on the [+] ter-
minal; negative pull-down to 0 V on the [–] terminal.
Ø NAC1, NAC2 and NAC3 will restore to standby when
the Control panel Resets.
Ø NAC1, NAC2 and NAC3 can be Silenced (forced to
standby).
The NAC Outputs will hold standby status for the pro
-
grammed Silence Time. If Alarm conditions are pre
-
sent when the programmed Silence Time expires,
they will re-activate.
+
NAC1, NAC2 and NAC3 accept devices that ope
-
rate within SELV limits ONLY.
+
EN54-2 cerification applies ONLY when, NAC1,
NAC2, NAC3, OS1, OS2, OS3, OS4, OS5, OS6,
OS7, OS8, O9, O10, O11, O12, O13, O14, O15,
O16 and RELAY FIRE outputs are not C , E , J , G
(EN 54-1) type,
therefore these outputs MUST NOT UTILIZED to
manage Fire Alarm devices and/or Fire Alarm
Transmission devices and/or Fire Fault Transmis
-
sion devices and/or Automatic Fire Alarm Systems.
The System Wiring
+
Use shielded cable only for all connections, with
one end of the shield connected to the Control pa
-
nel negative terminal and the other left free.
!
High Voltage leads (110/230 V) must be bun
-
ched separately from Low Voltage leads (24 V).
All leads must be bunched in such a way as to
avoid contact with other wiring and compo
-
nents.
n
Connecting Addressable Analogue Devices
The control panel has 2 loops for addressable analogue
devices.
Each loop supports 250 addressable analogue fire de
-
tectors and ananalogue devices (Input modules, Con-
ventional Zone modules, Output modules).
+
Every detector and every module connected to a
loop must be assigned a DIFFERENT address
(using the special Loop Service Tool FC490ST)
from the other detectors on the same loop.
You can use 2 or 4 wires for the loop connections.
NOTE: The loop connection type must be specified du
-
ring the programming phase.
Figure 9(1) illustrates the 2-wire connection to Loop2.
Figure 9(2) illustrates the 4-wire connection to Loop2.
+
Whatever the type of connection performed, make
sure that any short circuit or open circuit in the wi
-
ring does not lead to the loss of more than 32
detectors. An insulator should be fitted at least
every 32 detectors
INSTALLATION 21
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