Hochiki FireNET 4127 - Section 1: Introduction to FireNET 4127; Basic Features of the FireNET 4127

8
FireNET 4127 I & O Manual v1.90 UL
Section 1 – Introduction
The FireNET 4127 is an analog addressable fire alarm system that meets the
requirements of UL 864 9
th
Edition.
1.1 Basic Features
 The basic FireNET 4127 control panel includes two SLC (Signaling Line Circuit)
loops. Each loop is capable of supporting 127 analog addressable points (can be
any combination of sensors and modules) for a total of 254 analog addressable
points on the basic panel. Two additional SLC loops can be added to the panel
increasing the analog addressable point capacity to 508. When analog sounder
bases are used, the upper addresses 128 – 254 are allocated to increase loop
capacity to 254 analog addressable points. This doubles the analog addressable
point capacity of the panel. The combination of analog addressable points
derived from sensors, modules, and sounder bases cannot exceed 800
addresses and sub-addresses maximum.
 Up to 4.0 amps of power is available to drive the system, SLC loops, notification
appliances, and auxiliary equipment.
 Four Class B notification appliance circuits rated at 2.5 amps each (see Section
2.7 and 2.8 for additional details regarding NAC circuit ratings).
 Five programmable Form C relays are built-in to the control panel.
 500 network-wide zones for device and circuit grouping.
 Analog Smoke Detector Features:
 Automatic Drift Compensation
 Maintenance Alert
 Adjustable Day/Night Sensitivity
 Calibration checking meets sensitivity test requirements of NFPA 72.
 Auto-Learn utility identifies system devices, which makes initial system start-up
easier.
 8 line by 40 character graphic display provides the most intuitive operator
interface in the industry (320 characters total).
 Help screens are available from the front panel and annunciator user interface to
assist in programming and operation.
 512 additional points can be added to the system using the FN4127-IO 16
channel input/output boards. Each of these points can be programmed
individually to be an input or low current output. These points are for secondary
use only.