Notifier NFS-320 Installation Manual

28 NFS-320/E/C Installation Manual — P/N 52745:M2 7/1/14
Installation Backup-Alarm Switches
3.8 Backup-Alarm Switches
Backup alarm switches are provided that enable NACs
and the alarm relay to activate during a backup alarm
condition. If the main board’s microcontroller fails and
an alarm is reported by any detector or a monitor
module that has backup reporting enabled, the NAC
will turn on if the corresponding switch was enabled.
The alarm will activate during microcontroller failure
regardless of the settings of switches SW1-SW4.
• SW1 - NAC#1
• SW2 - NAC#2
• SW3 - NAC#3
• SW4 - NAC#4
So, for example, if SW1 and SW4 were enabled at the time of an alarm during microcontroller
failure, NAC#1 and NAC#4 would activate. Follow sequence of steps in Section 3.2 “Installation
Checklist”, Table 3.1.
!
WARNING:
Do not enable the BACKUP option switch for any of the four Notification Appliance Circuits (NACs) if
they are used for releasing functions!
Figure 3.12 Backup Alarm
Switches
CPU-320-bckalm.wmf

Notifier NFS-320 Specifications

General

Operating Temperature	32°F to 120°F (0°C to 49°C)
Operating Voltage	24 VDC
Humidity	10% to 93% non-condensing
SLC Loops	1
NAC Outputs	2
Power	120/240 VAC, 50/60 Hz
Compatibility	Notifier ONYX Series devices
Display	80-character LCD
Compatible Devices	Notifier ONYX Series detectors, modules, and notification appliances
Signaling Line Circuits (SLC)	1 SLC loop