18 NFS2-640 UL Listing Document — P/N 52741LD:H9 5/19/2022
To silence the panel sounder and any activated outputs that are programmed as silenceable:
Press the SIGNAL SILENCE key. The FIRE ALARM LED and SIGNALS SILENCED LED will light steady. The control panel sends a Signal
Silenced message to the remote annunciators, history buffer, installed printers, and CRT-2s.
1. Check the alarm message for the location and type of event.
2. Correct the condition that activated the Fire Alarm.
3. Press the
SYSTEM RESET key to return the control panel to normal operation. A “System Normal” message is sent to the LCD display, remote
annunciators, history buffer, installed printers, and CRT-2s.
• MN (Mass Notification) Event (If other events exist and the panel is silenced, a mass notification event will resound the panel sounder).
– Mass Notification Alarm
• Produces a steady audible tone
• Does not flash any LEDs
• Displays a Type Code that indicates the type of device that activated the MN alarm
• Sends an MN Alarm message to LCD Display, remote annunciators, History buffer, installed printers and CRT-2s.
• Latches the control panel in MN alarm (Panel will not return to normal operation until a System Reset is completed)
• Initiates any Control-By-Event actions
• Activates Special Zone ZFD (Not applicable for First Command applications)
• Does not activate any alarm relays or devices programmed as Alarm Pending or General Pending
• Sends an Alarm message to the central control station via the network, if applicable.
• Displays
MN ALM in the status banner on the LCD display, along with information specific to the device as shown below:
– Responding to an MN alarm event:
1. To silence only the panel sounder:
Press the ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder. The fire panel will send an Acknowledge message to the remote
annunciators, history buffer, installed printers, and CRT-2s. If multiple MN Alarms are present on the fire panel, the ACKNOWLEDGE/SCROLL
DISPLAY key must be pressed for each alarm.
To silence the panel sounder and any activated outputs that are programmed as silenceable:
Press the SIGNAL SILENCE key. The SIGNALS SILENCED LED will light steady. The control panel sends a Signal Silenced message to the
remote annunciators, history buffer, installed printers, and CRT-2s.Check the alarm message for the location and type of event.
2. Correct the condition that activated the MN Alarm.
3. Press the
SYSTEM RESET key to return the control panel to normal operation. A “System Normal” message is sent to the LCD display, remote
annunciators, history buffer, installed printers, and CRT-2s.
– Mass Notification Supervisory (If no other events exist on the fire panel)
• Produces a warbling audible tone
• Activates any supervisory relays and devices programmed as Supervisory Pending, General Supervisory, and General Pending
• Flashes the
SUPERVISORY LED (yellow)
• Activates Special Zone ZFE
• Sends a MN Supervisory message to the LCD display, remote annunciators, history buffer, installed printers, and CRT-2s.
• Sends an MN Supervisory message to the central control station via the network, if applicable.
• Displays a type code that indicates the type of MN supervisory alarm being generated
• Displays
MN SUP in the status banner on the control panel, along with information specific to the device as shown below:
NOTE: An ACM-24AT or AEM-24AT LED point must be programmed as a dedicated visual indicator of an MN event.
SIGNALS SILENCED
03:17P 041512 TUE
Status Banner
Time and date of
Alarm Silence
Figure 7 Sample Alarm Silence Message
MN ALM ECS/MN MON SECURITY STATION
MAIN BLDG Z004 03:17P 041512 2M147
Status Banner
Type Code
Custom descriptor for
this device location
Device address
Time and date of trouble
Zone
Extended 12 character
custom label
Figure 8 Sample MN Alarm Message
MN SUP ECS/MN SUPL SECURITY STATION
MAIN BLDG Z004 03:19P 041512 2M147
Status Banner
Type Code
Custom descriptor for
this device location
Device address
Time and date of trouble
Zone
Extended 12 character
custom label
Figure 9 Sample MN Supervisory Alarm Message
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