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IFC Networking—Metasys Intelligent Fire Network
Table 7: Twisted Pair Wire Length vs. Node Count
Permissible Distance in Feet for Each Cable Segment
Wire
Data
Threshold
Setting
Point
to
Point
Bus Configuration
of all
Nodes/
Repeaters
(Rpts)
2
Nodes/
Rpts
3
Nodes/
Rpts
4
Nodes/
Rpts
5
Nodes/
Rpts
6
Nodes
/ Rpts
7
Nodes/
Rpts
8
Nodes
/ Rpts
9
Nodes
/ Rpts
Belden
1455A
High
1-1,500
1-1,000
1-500
1-400
1-300
1-200
1-100
1-10
Low
1,500-
3,500
1,000-
3,000
500-
2,500
400-
2,000
300-
1,500
200-
1,000
100-
500
N/A
Belden
1154A,
1155A,
1250A,
High
1-1,000
1-500
1-400
1-300
1-250
1-200
1-100
1-10
1229A,
1245A
Low
1,000-
3,000
500-
2,500
400-
2,000
300-
1,700
250-
1,300
200-800
100-
400
N/A
Belden 9566
High
1-1,500
1-400
1-350
1-300
1-250
1-150
1-100
1-10
Low
1,500-
3,000
400-
2,500
350-
2,000
300-
1,500
250-
1,000
150-500
100-
250
N/A
Belden
9571, 9580
High
1-100
1-400
1-350
1-300
1-250
1-200
1-100
1-10
Low
1,000-
2,500
400-
2,000
350-
1,500
300-
1,000
250-
750
200-500
100-
250
N/A
Belden
9574, 9572,
9581
High
1-1,000
1-400
1-350
1-300
1-200
1-150
1-100
1-10
Low
1,000-
2,000
400-
1,500
350-
1,250
300-900
200-
500
150-350
100-
200
N/A
Belden
9583, 9575
High
1-300
1-250
1-200
1-150
1-100
1-100
1-50
1-10
Low
300-
2,000
250-450 200-400 150-300
100-
200
100-150 50-100
N/A
Note:
In noisy environments, use shielded cable and/or threshold setting high.
Summary of Contents for FIRE-MON-17
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Page 69: ...IFC Networking Metasys Intelligent Fire Network 69 Notes ...
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