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AVENAR panel
L [m]
2
0
0
0
1
8
0
0
1
6
0
0
1
4
0
0
1
2
0
0
1
0
0
0
8
0
0
d
6
0
0
2
0
m
A
1
0
m
A
7
5 ,
4
0
0
2
0
0
0
0
1
0
2
0
3
0
4
0
Figure 3.2: Diagram for determining the maximum achievable cable length: LSN improved elements with LSN 0300 A
L =
N =
a =
b =
c =
d =
3.8
Achievable cable length with LSN 1500 A
The usable cable length depends essentially on the resistance of the cable and the quantity
and current consumption of the network elements.
The way in which the elements are distributed locally on the bus also makes a difference. The
possible cable length can be estimated using the formula below. This formula is also used in
the Safety Systems Designer and is based on the critical application situation where all
network elements are concentrated at the end of the bus line. The calculated cable lengths
are therefore on the conservative side.
The diagrams on pages Using the Diagram for LSN improved, page 38 and Using the Diagram
for LSN improved, page 38 can be used to make a quick estimate.
The following applies:
L = cable length to be calculated in [m]
U
0
Bosch Sicherheitssysteme GmbH
a
m
A
5
m
A
4
m
A
3
5
0
6
0
7
0
8
0
9
0
1
cable length in meters
number of LSN improved elements
1600 m limit
bus dynamic limit
maximum possible number of LSN improved elements = 254
300 mA limit
= bus voltage at the connection terminals = 30 volt
m
A
2
5 ,
m
A
2
m
A
0
0
1
1
0
1
2
0
1
3
0
1
4
0
1
5
0
System manual
1
5 ,
m
A
1
6
0
1
7
0
1
8
0
1
9
0
2
0
0
2
1
2022-07 | 5.0 | F.01U.378.910
Planning | en
37
c
0
2 ,
6
5
m
A
b
0
3 ,
7
5
m
A
0
5 ,
m
A
0
7 ,
m
A
1
m
A
0
2
2
0
2
3
0
2
4
0
2
5
0
N
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