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RELEASING FEATURES self-restoring,and can be used to activate special control tunc- • Ten independent hazards. tions. • Sophisticated cross-zone (three options) Se�f-Optimizing Pre-Af�rm: Each detector may tre set for Delay timer and Discharge timers(adjustable) "Self-Optimizing"pre-alarm. In this special mode, the detector ' "learns" its normal environment, measuring the peak analog • Abort(four options) readings over a long period of time, and setting the pre-a{arm • Low-pressure CO2 fisted. level just above these normal peaks. VDICE AND TELEPHONE FEATt1RES Cooperating Multi-Detector Sensing: A patented feature of ONYX intelligent sensing is the ability of a smoke sensor to • Up to eight channets of digital audio. consider readings from nearby sensors in making alarm or • 35, 50, 75, and 100l125 watt digital amplifiers (DAA2/DAX pre-alarm decisions.Without statistical sacrifice in the ability to series and DS series; NCA-2 required as primary display) resist false alarms, it allows a sensor to increase its sensitivity • Solid-state digital message generation. to actual smoke by a factor of almost two to one. � Firefighter telephone option. • 30-to 120-watt high-efficiency amplifiers(AA Series) Field Programming Options • Backup tone generator and ampiifier option. Autoprogram. This timesaving feature is a special software routine. The FACP "learns" what devices are physically con- H/GH-EFFICIENCY OFFLINE SWITCH►NG nected and automatically loads them in the program with 3.0 A POWER SUPPLY(6.0 A IN ALARM) default vatues for all parameters. Requiring less than one min- • 120 VAC(NFS2-640),240 VAC(NFS2-640E) ute to run,this routine allows the user to have aimost immedi- ate fire protection in a new installation,even if only a portion of • Displays battery currenUvoltage on panel(with display) the detectors are installed. FlashScan, Exclusive Keypad Program Edit(with KDM-R2)The NFS2-640, like all NOTIFIER intelligent panels, has the exclusive feature of pro- World-Leading Detector Protocol gram creation and editing capability from the front panel key- At the heart of the NFS2-640 is a set of detection devices and pad, while continuing to provide fire protection. The device protocol—FlashScan(U S. Patent 5,539,389) FlashS- architecture of the NFS2-640 software is such that each point can is an all-digital protocol that gives superior precision and entry carries its own program, including control-by-event links high noise immunity to other points. This allows the program to be entered with independent per-point segments,while the NFS2-640 simulta- In addition to providing quick identification of an active input neously monitors other(already installed)points for alarm con- device, this new protocol can also activate many output ditions. devices in a fraction of the time required by competitive proto- cols. This high speed also allows the NFS2-640 to have the veriFreO Tools is an offline programming and test utility that largest device per loop capacity in the industry—318 points can greatly reduce installation programming time, and — yet every input and output device is sampled in less than �ncrease confidence in the site-specific software. It is Win- two seconds.The microprocessor-based FlashScan detectors dowsO-based and provides technologicalfy advanced capabili- have bicolor LEDs that can be coded to provide diagnostic ties to aid the installer The installer may create the entire information,such as device address during Walk Test. program for the NFS2-640 in the comfort of the office, test it, store a backup file,then bring it to the site and download from ONYX Intelligent Sensing a laptop into the panel. Intelligent sensing is a set of software algorithms that provides p�acement of Equipment the NFS2-640 with industry-Ieading smoke detection capabil- jn Chassis and Cabinet ity. These complex algorithms require many calculations on each reading of each detector, and are made possible by the The following guidelines outline the NFS2-640's flexible sys- high-speed microcomputer used by the NFS2-640 tem design. Drift Compensation and Smoothing: Drift compensation Rows:The first row of equipment in the cabinet mounts in the allows the detector to retain its original ability to detect actual chassis shipped with the CPU Mount the second, third, or smoke, and resist false alarms, even as dirt accumulates. It fourth rows of equipment in a ChiS-4 series chassis or,for Dig- reduces maintenance requirements by allowing the system to ital Voice Command products, in CA-1 or CA-2. (For DVC and automatically perform the periodic sensitivity measurements DAA2/DAX components see DVC Manual;for DS series com- required by NFPA 72. Smoothing filters are also provided by ponents see DS-AMP Manuat for DVC-AO appfications, see software to remove transient noise signals, such as those AA Series Insta!lafion Manua�Other options are available, caused by electrical interference. see your panel's instaltation manual Maintenance Warnings: When the drift compensation per- Wiring: When designing the cabinet Iayout, consider separa- formed for a detector reaches a certain level,the performance tion of power-limited and non-power-fimited wiring as dis- of the detector may be compromised, and special warnings cussed in the lYFS2-6401nstalfation Manual. are given. There are three warning levels: (1) Low Chamber positions: A chassis offers four basic side-by-side positions value, (2) Maintenance Alert, indicative of dust accumulation for components; the number of modules that can be mounted that is near but below the allowed limit; (3) Maintenance in each position depends on the chassis model and the size of Urgent,indicative of dust accumulation above the allowed limit. the individual module. There are a variety of standoffs and Sensitivity Adjust: Nine sensitivity levels are provided for hardware items available for different combinations and config- alarm detection. These levels can be set manually, or can urations of components. change automatically beriveen day and night. Nine levels of It is critical that all mounting hoies of the NFS2-640 are pre-alarm sensitivity can also be selected, based on predeter- secured with a screw or standoff to ensure continuity of Earth mined levels of alarm. Pre-alarm operation can be latching or Ground. 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