Security Alarm Mode of Operation 3. Operation of the Control Panel
NFS-640 Operations Manual P/N 51334:B 10/03/2003 27
Security Alarm Mode of Operation
(Not Suitable for Canadian Applications)
How the Control Panel Indicates a Security Alarm
The system goes into Security mode when a monitor module point programmed with a Security Type
Code activates. If no fire alarm exists, the control panel does the following:
• Produces a warbling audible tone
• Turns on the Security relay TB11
• Flashes the
SECURITY LED (blue)
• Displays a Type Code that indicates the type of security alarm being generated
•Displays
ACTIVE in the status banner on the control panel, along with information specific to
the device
• Sends a Security message to the LCD display, History buffer, and installed printers, terminal
mode LCD-80s, and CRT-2s
• Sends a Security message to the proprietary receiver via the network, if applicable.
Note: If a fire alarm exists, and there are silenced alarms (the SIGNALS SILENCED LED is lighted), a Security alarm will
resound the panel sounder.
A Typical security message that appears on LCD display:
Figure 11 Sample Security Alarm Message
How to Respond to a Security Alarm
A Security Type Code latches the control panel. To return the control panel to normal operation, you
must correct the condition causing the security condition, then reset the control panel. If the control
panel indicates a security alarm, take the following action:
Note: If a fire alarm exists, and there are silenced alarms (the SIGNALS SILENCED LED is lighted), a Security alarm will
resound the panel sounder.
1. Press the ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder and switch the
SECURITY LED from flashing to steady—regardless of the number of troubles, alarms, supervisory,
and security signals. The control panel sends a Security message to the History buffer and installed
printers, terminal mode LCD-80s, and CRT-2s.
2. Correct the condition that activated the Security point.
3. When you finish correcting the Security condition, press the
SYSTEM RESET key to return the
control panel to normal operation (indicated by the “System Normal” message). The control panel
sends a “System Normal” message to the LCD display, History buffer and installed printers,
terminal mode LCD-80s, and CRT-2s.
ACTIVE SECURITY INTENSIVE CARE UNIT
EASTERN WING Z004 03:17P 071401 2M147
Status Banner
Type Code
Custom descriptor for
this device location
Device address
Time and date of trouble
Zone
Extended 12 character
custom label
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