System Overview Intelligent Detectors
18 NFS-640 Installation Manual P/N 51332:B1 12/01/2003
Zone Coder and UZC-256 Programming manuals for further information and installation
instructions.
Field Charger/Power Supply - FCPS-24. A compact, cost-effective remote power supply and
battery charger. It consists of a filtered, 24 VDC output that can drive up to four Notification
Appliance Circuits (NACs). Refer to the FCPS-24 Field Charger/Power Supply manual for further
information and installation instructions.
Battery Charger - CHG-120. Designed to charge lead-acid batteries that provide emergency
standby power for a Fire Alarm Control Panel. Provides two (2) output circuits for connection to
multiple loads. Can be mounted into the CAB-4 Series backbox or the NFS-LBB Battery Box.
Refer to the CHG-120 Battery Charger manual for further information and installation instructions.
Liquid Crystal Display - LCD-80. An alphanumeric display module that is an ancillary device
which has two basic modes of operation. In Terminal Mode it acts as a display interface and in ACS
Mode as an alphanumeric annunciator. The LCD-80TM is also available and provides Terminal
Mode only. Refer to the LCD-80 or LCD-80TM Liquid Crystal Display manuals for further
information and installation instructions.
SCS-8 Series Smoke Control System. The Smoke Control Station (SCS-8) module uses
eight groups of four annunciator points for fan shutdown control or other heating, ventilation or air
conditioning functions. The Smoke Control Expander (SCE-8) is used to expand the SCS-8 by an
additional eight groups of four annunciator points. Only one expander can be used per SCS-8. The
Smoke Control Lamp Driver Station (SCS-8L) module uses eight groups of four annunciator points
for fan shutdown control or other heating, ventilation or air conditioning functions. Must be
mounted in custom graphic annunciator panel. The Smoke Control Expander (SCE-8L) is used to
expand the SCS-8L by an additional eight groups of four annunciator points. Only one expander
can be used per SCS-8L. Must be mounted in custom graphic annunciator panel. For more details
on the SCS Smoke Control System, refer to the SCS Manual.
2.5 Intelligent Detectors
Introduction
Intelligent, addressable detectors provide analog information to the control panel on a Signaling
Line Circuit (SLC). This allows the control panel to continually process this information to
determine the status (alarm, trouble, maintenance, or normal) of each detector. Each detector
responds to an SLC address that is set in the detector head using built-in rotary switches. Each SLC
loop can support up to 159 detectors. The sensitivity of each intelligent detector can be
programmed (refer to Appendix C in the NFS-640 Programming Manual for details).
Note: A blinking LED on an intelligent detector indicates communication between the detector and
the control panel.
Detectors
The FlashScan® algorithm provides high-speed communication between analog intelligent
devices, by polling in groups unless new information is reported. If one of the devices within the
group has new information, the control panel stops the group poll and concentrates on single points.
CLIP (Classic Loop Interface Protocol) is standard polling of each intelligent devices.
FAPT-851 (Acclimate Plus™). Intelligent detector that combines a photoelectric sensing
chamber and fixed temperature heat detection (135°F (57.2°C). FlashScan capable.
FSI-851. Addressable, intelligent smoke detector that incorporates an ionization sensing chamber.
Designed to provide open area protection. FlashScan capable.
FSP-851. Analog, addressable intelligent smoke detector that uses a photoelectric sensing
chamber. Listed for use in ducts. Designed to provide open area protection. FlashScan capable.
The FSP-851T adds thermal sensors that will alarm at a fixed temperature of 135° F.
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