DN-6856 • 03/08/04 — Page 3 of 9
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VeriFire™ Tools System Programming screen
Above: Keypad program editing.
Below: Autoprogram function.
AUTOPROGRAM PLEASE WAIT
L1:80 DETS, 15 MODS L2:93 DETS, 35 MODS
PANEL OUTPUTS:24 BELLS: 04
ENTER PROG OR STAT PASSWORD, THEN ENTER
(ESCAPE TO ABORT) *****
0=CLR 1=AUTO 2=POINT 3=PASSWD 4=MESSAGE
5=ZONES 6=SPL FUNCT 7=SYSTEM 8=CHECK PRG
30- to 120-watt high-efficiency amplifiers (AA Series).
Backup tone generator and amplifier option.
Multichannel voice transponder (XPIQ).
• High-efficiency offline switching 3.0 amp power sup-
ply (6.0 A in alarm):
120 or 220/240 VAC.
Displays battery current/voltage on panel (with display).
FlashScan® Exclusive New
World-Leading Detector Protocol
At the heart of the NFS-640 is a set of detection devices and
device protocol — FlashScan® (U.S. Patent 5,539,389).
FlashScan® is an all-digital protocol that gives superior pre-
cision and high noise immunity.
In addition to providing quick identification of an active input
device, this new protocol can also activate many output de-
vices in a fraction of the time required by competitive proto-
cols. This high speed also allows the NFS-640 to have the
largest device per loop capacity in the industry — 318 points
— yet every input and output device is sampled in less than
two seconds. The microprocessor-based FlashScan® detec-
tors have bicolor LEDs that can be coded to provide diag-
nostic information, such as device address during Walk Test.
AWACS™ Advanced Warning
Addressable Combustion Sensing
AWACS™ is a set of software algorithms that provide the
NFS-640 with industry-leading smoke detection capability.
These complex algorithms require many calculations
on each reading of each detector, and are made pos-
sible by the very-high-speed microcomputer used by
the NFS-640.
Drift Compensation and Smoothing. Drift
compensation allows the detector to retain its original
ability to detect actual smoke, and resist false alarms,
even as dirt accumulates. It reduces maintenance re-
quirements by allowing the system to automatically per-
form the periodic sensitivity measurements required by
NFPA 72. Smoothing filters are also provided by soft-
ware to remove transient noise signals, such as those
caused by electrical interference.
Maintenance Warnings. When the drift compen-
sation performed for a detector reaches a certain level,
the performance of the detector may be compromised,
and special warnings are given. There are three warn-
ing levels: (1) Low Chamber value, usually indicative
of a hardware problem in the detector; (2) Maintenance
Alert, indicative of dust accumulation that is near but
below the allowed limit; (3) Maintenance Urgent, indica-
tive of dust accumulation above the allowed limit.
Sensitivity Adjust. Nine sensitivity levels are pro-
vided for alarm detection. These levels can be set
manually, or can change automatically between day
and night. Nine levels of pre-alarm sensitivity can also
be selected, based on predetermined levels of alarm.
Pre-alarm operation can be latching or self-restoring,
and can be used to activate special control functions.
Self-Optimizing Pre-Alarm. Each detector may
be set for “Self-Optimizing” pre-alarm. In this special
mode, the detector “learns” its normal environment,
measuring the peak analog readings over a long pe-
riod of time, and setting the pre-alarm level just above
these normal peaks.
Cooperating Multi-Detector Sensing. A pat-
ented feature of AWACS™ is the ability of a smoke
sensor to consider readings from nearby sensors in
making alarm or pre-alarm decisions. Without statisti-
cal sacrifice in the ability to resist false alarms, it al-
lows a sensor to increase its sensitivity to actual smoke
by a factor of almost two to one.
Field Programming Options
Autoprogram is a timesaving feature of the NFS-640. It
is a special software routine that allows the NFS-640 to “learn”
what devices are physically connected and automatically load
them in the program with default values for all parameters.
Requiring less than one minute to run, this routine allows the
user to have almost immediate fire protection in a new instal-
lation, even if only a portion of the detectors are installed.
Keypad Program Edit (with KDM-2). The NFS-
640, like all NOTIFIER intelligent panels, has the exclusive
feature of program creation and editing capability from the
front panel keypad, while continuing to provide fire pro-
tection. The architecture of the NFS-640 software is such
that each point entry carries its own program, including con-
trol-by-event links to other points. This allows the program to
be entered with independent per-point segments, while the
NFS-640 simultaneously monitors other (already installed)
points for alarm conditions.
VeriFire™ Tools is an offline programming and test util-
ity that can greatly reduce installation programming time, and
increase confidence in the site-specific software. It is Win-
dows® based and provides technologically advanced capa-
bilities to aid the installer. The installer may create the entire
program for the NFS-640 in the comfort of the office, test it,
store a backup file, then bring it to the site and download
from a laptop into the panel.
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