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• Optional addressable sounder base for Temp-3 (fire) or pre-alarm sensitivity can also be selected, based on prede- Temp-4(CO)tone. termined levels of alarm.Pre-alarm operation can be latching • Automatic drift compensation of smoke sensor and CO or self-restoring, and can be used to activate special control cell. functions. • High nuisance-alarm immunity. Self-Optimizing Pre-Alarm: Each detector may be set for RELEASING FEATURES "Self-Optimizing"pre-alarm. In this special mode,the detec- tor"learns"its normal environment,measuring the peak ana- • Ten independent hazards. log readings over a long period of time, and setting the pre- • Sophisticated cross-zone(three options). alarm level just above these normal peaks. • Delay timer and Discharge timers(adjustable). Cooperating Multi-Detector Sensing:A patented feature of • Abort(four options). ONYX intelligent sensing is the ability of a smoke sensor to • Low-pressure CO2 listed. consider readings from nearby sensors in making alarm or pre-alarm decisions.Without statistical sacrifice in the ability VO►cE FEATURES to resist false alarms,it allows a sensor to increase its sensi- • Integrates with FirstCommand Series.See DN-60772. tivity to actual smoke by a factor of almost two to one. • Telephone applications require NFC-FFT. Field Programming Options HIGH-EFFICIENCY OFFLINE SWITCHING Autoprogram is a timesaving feature. The FACP "learns" 3.0 A POWER SUPPLY(6.0 A IN ALARM) what devices are physically connected and automatically • 120 VAC(NFS-320/NFS-320C);240 VAC(NFS-320E). loads them in the program with default values for all parame- Displays battery current/voltage on panel(with display). parame- ters. Requiring less than one minute to run, this routine • allows the user to have almost immediate fire protection in a new installation, even if only a portion of the detectors are FlashScan, Exclusive installed. World-Leading Detector Protocol Keypad Program Edit(with KDM-R2)The NFS-320,like all At the heart of the NFS-320 is a set of detection devices and NOTIFIER intelligent panels,has the exclusive feature of pro- device protocol—FlashScan(U.S.Patent 5,539,389).Flash- gram creation and editing capability from the front panel key- Scan is an all-digital protocol that gives superior precision pad, while continuing to provide fire protection. The and high noise immunity. architecture of the NFS-320 software is such that each point In addition to providing quick identification of an active input entry carries its own program,including control-by-event links device,this protocol can also activate many output devices in to other points. This allows the program to be entered with a fraction of the time required by competitive protocols.This independent per-point segments,while the NFS-320 simulta- high speed also allows the NFS-320 to have the largest neously monitors other (already installed) points for alarm device per loop capacity in the industry—318 points—yet conditions. every input and output device is sampled in less than two VeriFire®Tools is an offline programming and test utility that seconds. The microprocessor-based FlashScan detectors can greatly reduce installation programming time, and have bicolor LEDs that can be coded to provide diagnostic increase confidence in the site-specific software. It is Win- information,such as device address during Walk Test. dows9-based and provides technologically advanced capa- bilities to aid the installer.The installer may create the entire ONYX Intelligent Sensing program for the NFS-320 in the comfort of the office,test it, store a backup file, then bring it to the site and download Intelligent sensing is a set of software algorithms that pro- from a laptop into the panel. vides the NFS-320 with industry-leading smoke detection capability. These complex algorithms require many calcula- Placement of Equipment tions on each reading of each detector,and are made possi- ble by the high-speed microcomputer used by the NFS-320. in Chassis and Cabinet Drift Compensation and Smoothing: Drift compensation The following guidelines outline the NFS-320's flexible sys- allows the detector to retain its original ability to detect actual tem design. smoke, and resist false alarms, even as dirt accumulates. It Wiring:When designing the cabinet layout,consider separa- reduces maintenance requirements by allowing the system to tion of power-limited and non-power-limited wiring as dis- automatically perform the periodic sensitivity measurements cussed in the NFS-320 Installation Manual. required by NFPA 72. Smoothing filters are also provided by software to remove transient noise signals, such as those It is critical that all mounting holes of the NFS-320 are caused by electrical interference. secured with a screw or standoff to ensure continuity of Earth Ground. Maintenance Warnings: When the drift compensation per- formed for a detector reaches a certain level, the perfor- Networking: If networking two or more control panels, each mance of the detector may be compromised, and special unit requires a Network Communication Module or High- warnings are given.There are three warning levels: (1) Low Speed Network Communication Module (HS-NCM can sup- Chamber value; (2) Maintenance Alert, indicative of dust port two nodes;see"Networking Options"on page 4).These accumulation that is near but below the allowed limit; (3) modules can be installed in any option board position (see Maintenance Urgent, indicative of dust accumulation above manual), and additional option boards can be mounted in the allowed limit. front of them. Sensitivity.Adjust: Nine sensitivity levels are provided for alarm detection. These levels can be set manually, or can change automatically between day and night. Nine levels of DN-7112:J•12/20/2013—Page 3 of 8