Normal Mode Of Operation; Fire Alarm Mode Of Operation - Honeywell NOTIFIER NFS2-640 Operation Manual
Fire alarm control panel
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Also See for NOTIFIER NFS2-640:
- Manual (42 pages) ,
- Wiring manual (80 pages) ,
- Programming and operations manual (46 pages)
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Operation of the Control Panel
3.2 Normal Mode of Operation
The system operates in Normal mode when no alarms or troubles exist. In Normal mode, the con-
trol panel displays a System Normal message as follows
In Normal mode, the control panel does the following functions at regular intervals:
•
Polls all SLC devices and the four NACs to check for valid replies, alarms, troubles, circuit
integrity, supervisory signals, etc.
•
Checks power supply troubles and batteries at 10-second intervals
•
Sends a supervisory query on the optional FDU-80 and verifies proper response
•
Refreshes the LCD display and the optional FDU-80 display and updates time
•
Scans for any keypad or Control Key entries
•
Performs a detector automatic test operation
•
Tests system memory
•
Monitors for microcontroller failure
3.3 Fire Alarm Mode of Operation
3.3.1 How the Control Panel Indicates a Fire Alarm
When an initiating device (detector or monitor module) activates, the control panel does the follow-
ing:
•
Produces a steady audible tone
•
Activates the System Alarm relay (TB4)
•
Flashes the
•
Displays a Type Code that indicates the type of device that activated the fire alarm
•
Displays
the device, as shown below:
Status banner
Extended 12 character
custom label
•
Sends an Alarm message to the LCD display, remote annunciators, History buffer, installed
printers, and CRT-2s.
•
Latches the control panel in alarm. (You can not return the control panel to normal operation
until you correct the alarm condition and reset the control panel)
•
Initiates any Control-By-Event actions
•
Starts timers (such as Silence Inhibit, Auto Silence)
•
Activates the general alarm zone (Z00)
18
S Y S T E M N O R M A L
Figure 3.1 Sample System Normal Message
LED
FIRE ALARM
in the status banner on the LCD display, along with information specific to
ALARM
Type Code of initiating device
A L A R M : P U L L S T A T I O N I N T E N S I V E C A R E U N I T
E A S T E R N W I N G
Z 0 0 4
Zone
Figure 3.2 Sample Fire Alarm Display
0 1 : 5 6 P 0 4 1 5 1 5 S a t
0 3 : 1 0 P 0 7 1 4 1 5 2 M 1 4 7
Time and date of trouble
NFS2-640 Operations P/N 52743:L4 06/10/19
Normal Mode of Operation
Custom descriptor for
this device location
Device address
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