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Normal Operation
Disabled
This is a yellow LED that flashes to indicate that a zone, NAC, detector or module has been temporarily disabled in programming by the
user.
Maintenance
This is a yellow LED that flashes to indicate that a smoke detector requires cleaning or replacement due to an invalid chamber reading or
excessive drift.
Communication
This is a yellow LED that flashes to indicate a communication fault, including loss of phone lines, communication failure with either
Central Station, or total communication failure.
Alarm Silenced
This is a yellow LED that turns on after the Alarm Silence key is pressed while an alarm condition exists. It turns off when the Drill or
Reset key is pressed.
4.3 Normal Operation
With no alarms or troubles in the system, the display message is System Normal along with the current time and date as shown below. To
set the time and date, refer to the appropriate section in this manual.
The NFW-50X performs the following functions at regular intervals while in Normal mode:
Monitors AC input voltage and battery voltage
Monitors and reports status of SLC loop, option cards, and control panel
Polls all devices on the SLC loop and flashes each device LED while checking for valid replies, alarms, troubles, etc.
Refreshes LCD display and updates time
Scans control panel keypad for key presses
Performs autotest for all SLC devices
Tests memory
Updates and reads all communications buses
4.4 Trouble Operation
With no alarms in the system, the detection of a trouble will cause the following:
•
The piezo to pulse 1 second On and 1 second Off
•
The system Trouble LED to flash one second On and one second Off
•
The trouble relay to activate
•
TROUBL with device type, noun/adjective, address and trouble description will appear on the LCD display
•
The same message, along with the time and date, is sent to the optional printer and the history buffer.
•
Communicate the trouble conditions to the Central Station
•
Terminate upload or download communications
Note that specific troubles will initiate additional actions; for example, loss of AC power will turn off the AC Power LED, a ground fault
will turn on the Ground LED, etc.
Addressable Smoke Detectors, Monitor Modules and Control Modules
For addressable devices connected to the SLC loop, the following is a typical message that could appear on the LCD display for a device
trouble:
The information displayed in the above example provides the following information:
•
First line in display:
The type of event; in this example TROUBL indicating a device trouble
Device type identifier; in this example, SMOKE (PHOTO) indicates a Photoelectric smoke detector. Other device type identifiers
which can be displayed include SMOKE (ION) for Ionization Detector, HEAT for Heat Detector, CONTROL for Control Module
and MONITOR for Monitor Module, PULL STATION for a manual pull box, etc. Refer to "Edit Detector" on page 51, "Edit
Module Screen for Monitor Module" on page 57 and "Edit Module Screen for Control Modules" on page 62 for information on
additional device types.
•
Second line in display:
<ADJ>; refers to the user programmed adjective descriptor from library list resident in the control panel or custom entry via PC.
NFW-50X Manual — P/N LS10129-001NF-E:C 7/25/2018
SYSTEM NORMAL
10:00A 072016
TROUBL SMOKE (PHOTO)
<ADJ> <NOUN>
INVREP
10:00A 010816 1D001
Operating Instructions
103
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