Overall Limitations - Notifier NOTI-FIRE-NET Manual

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Overall Limitations

Overall Limitations
Note: The use of
more than one type
of cable within any
point-to-point or
bus connection is
not permitted.
When utilizing
existing cable, be
sure to eliminate
any cable branches
or spurs.
NOTI•FIRE•NET™ PN 50257:E 7/5/01
Technical Manuals Online! - http://www.tech-man.com
When designing the wiring layout of a NOTI•FIRE•NET™ system, the following distance
limitations must be considered:
1.
The length of each individual twisted pair or fiber optic network communication circuit
segment is limited. A segment is defined as either a point-to-point connection with two nodes/
repeaters, or a bus circuit encompassing multiple nodes. As illustrated in Figure 1, Example 1
segments 1, 2, and 3 are point-to-point circuits and Example 2 is a bus circuit encompassing
five nodes. The procedures differ to determine the maximum permissible segment length for a
twisted pair and a fiber-optic segment. The following paragraphs detail each procedure.
Twisted Pair Circuits
The length of cable for each segment in the system must fall within the range specified in Table
2. If the distance required for a circuit segment is greater than permitted, a Repeater module
(RPT-W) must be inserted into the circuit at intervals less than, or equal to, the length
restriction.
Cable type should be selected to satisfy the code requirements specific to a particular
application. Refer to Table 2 through Table 4 for descriptions of specific cable types used with
NOTI•FIRE•NET™.
firealarmresources.com
Figure 1 Circuit Wiring Layout
7

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