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4.2.1.4 AX-CTL Notification Appliance Circuits
The AX-CTL base card provides two notification appliance
circuits (NAC). In addition, two additional notification
appliance circuits can be added to the AX-CTL-2PCB by
adding the optional AX-LPD or AX-NAC plug-in card.
Note: The AX-CTL-1PCB one loop base card cannot
support the AX-LPD or AX-NAC option modules.
Each notification appliance circuit is capable of supporting
synchronized or non-synchronized strobes/signal patterns.
Synchronization programming is done in the PC-NeT 6.48
or higher or via the AX-CTL-1L, AX-CTL-2 or AX-CTL-4
AX-DSP display keypad. In addition to the synchronization
programming, silenceable or non-silenceable strobe
programming is available.
Synchronization protocols include:
Gentex®
Potter/Amseco®
Wheelock®
System Sensor®
The circuit ratings for each notification appliance circuit
are as follows:
REGULATED 24 VDC @ 2.0A
2
SUPERVISED. POWER LIMITED.
Class A or B
Class B EOL (End-of-Line) Resistor 10K
Ω
Minimum return voltage permitted is 16V.
Wire range – 22-12 AWG
Maximum line impedance at 2.0A is 1.5
Ω
.
Maximum voltage drop across installation wiring is 3.0V at
battery voltage of 20.4V.
Calculate the maximum line impedance and conductor
size required for the actual load current applied.
Refer to Axis
AX
Wiring Guide Section 9.
The default operation of each notification appliance circuit is non-synchronized, turn ON steady for any alarm
condition and turn off when silenced or reset. If non-silenceable synchronization strobes are programmed, strobes
will continue to flash after signal silence. The notification appliance circuit outputs can also be configured to
accommodate silenceable synchronized strobes.
Note: Notification appliance circuits can be utilized as a door holder or other 24 VDC output by setting the
notification appliance circuit to a “Not Alarm” Logic Statement. This programming allows the notification
appliance circuit to be active (24 VDC) during a non-alarm and off during alarm.
2
TOTAL OUTPUT LOAD must not exceed panel supply rating – maximum 4A.
Class A
Class B
EOL 10K
OUT
OUT
IN
NAC - 1
NAC - 2
A+
B+
A-
B-
A+
B+
A-
B-
NAC - 3
NAC - 4
On AX-LPD or AX-NAC Module
The following meter readings are
available on the FACP display per NAC:
Output
Voltage
Input
(Return)
Voltage
Load
Current
(Refer to Section 10.1.1)
