13
Neon
- Conventional Fire Alarm Control Panel
Table 8.
Micro switches SW-C
8.4 H/W Reset button
The PCB RESET button (Item 5, page 4) should only be
used by the installer. It is used to restart the microcontroller
or to make effective any changes made via the micro dip
switches.
In order to activate changes of settings via the micro
dip switches a PCB RESET is required (by pressing
the PCB RESET button on the main board, item 5 page
4). To distinguish this reset operation from the System
(Zones) reset, the term “PCB reset” is used through
out this manual.
9. Power Supply
Neon panel uses a switching power supply for a stabilized
output of 27.6V DC, 2.5A. The connection to the mains
power is through the Mains Power Connector (item 12,
page 4).
The Switching Power Supply connects to the main board
through a 4-wire power connector.
T
o avoid equipment damage, the connection of the
main power and the batteries must be done only AF-
TER the connection of all the required wiring includ-
ing peripherals and detection devices.
9.1 Power Consumption
On
Table 9
the current consumption of the
Neon
panel is
listed.
Model
ZONES
POWER
SUPPLY
CURRENT
IN
STANDBY
MODE
CURRENT
IN
ALARM
MODE
MAX No
OF DETECTORS
PER ZONE
Neon 2
2
27.6V DC
55 mA
165 mA
20
Neon 4
4
27.6V DC
55 mA
180 mA
20
Neon 8
8
27.6
V DC
55 mA
210 mA
20
Table 9.
Panels’ current consumption
The above numbers do not include consumption from
the detectors. They do include consumption of the EOL
resistors.
9.2 Recommended batteries
The batteries recommended for the Neon panel are 12V,
7AH Sealed lead acid batteries (two units per panel). The
standby time of the panel obtained with these batteries
depends on the panel type, the quantity/type of the con
-
nected peripheral appliances and the quantity/type of the
connected detectors. See Appendix B for battery autonomy
calculation.
10. Wiring Connections of Inputs / Outputs
10.1 Alarm output
In case of an alarm, the
ALARM
output relays (Notification
appliance outputs S1 to S4) provide 24V DC to the notifica
-
tion appliances that are connected to the panel. Maximum
current for each output is 0.4 Amp (fused at 1.6A). Total
current for alarm outputs must not exceed 1 Amp.
IMPORTANT: The total current of the auxiliary out-
puts plus the siren outputs must not exceed 1.5 Amp.
The Alarm output also monitors the notification appliances
wiring for open lines and short circuits. The connection of a
4.7K Ohm EOL resistor is required as shown in below (
see
section 1.2
).
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
Signaling device
24V DC
Panic button
Photoelectric detector
Rate of Rise Heat detector
Figure 5.
Zone inputs and Siren outputs wiring connections.
Pay special attention when connecting loads less than
2.2K Ohm! They may interfere with the fault detection
circuit causing a fault condition. In this case use a di-
ode between the output “+” and the load. Connect the
anode of the diode to the output “+” terminal. The di-
ode must be able to withstand the maximum current
during the operation of the load.
See Figure 6
for an
example connection.
4.7K
IN4003
Figure 6.
Typical load connection
10.2 Fault output
Neon provides an output to activate external de-
vices in the case of faults. The output is acti-
vated on zone faults, output relay faults, power
faults (auxiliary, main or battery) and earth fault.
Dry relay contacts are provided on the
“FAULT”
terminal
that may activate any device or indicator. Maximum han-
dling current is 3 A.
10.3 Fire detection zones wiring connections
The fire detection zones have 18V DC in standby mode
with the positive power supply terminal common and are
terminated via a 4.7K Ohm EOL resistor or a 22uF capaci-
tor.
The circuit recognizes five different resistances which cor
-
respond to four different states of the system.
The four different resistance ranges are:
Resistance Ranges
0
up to
15 Ohm
Short-circuited Zone
40
up to 1.2K Ohm
Zone in alarm state
1.5K up to 7K Ohm
Zone in standby state
10K
up to ∞
Open-circuited Zone
Table 10.
System’s resistance ranges
Each zone that is not used must be terminated with
EOL resistor of 4.7K Ohm.
IMPORTANT! Smoke detectors must be installed in the
same room as the control panel and in rooms used by
the system for the connection of alarm transmission
wiring, communications, signaling, and/or power. If de-
tectors are not so located, a developing fire may dam
-
age the alarm system, impeding the ability to report a
fire.
Wiring connections of detectors and other devices to the
main board with 4.7K Ohm EOL resistors are analytically
shown in section 1.2.
In case the installation requires Active End Of Line termi-
