Bosch FPA-5000 Product Information page 60

60 en | Installation/Configuration Notes
L [m]
3200
a
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
800
600 20mA 10mA
300mA
400
200
0
0 5 10 15 20
Figure 3.3 Diagram for calculating the maximum achievable cable length, using elements with classic LSN
technology and the LSN 1500 A
L =
N =
a =
b =
NOTICE!
Remote alarm indications activated by the detector C point:
A maximum 500 m of additional cable length is allowed when using remote displays (e.g.
MPA/FAA-420-RI).
The total length of installed line must not exceed the limit of 3000 m!
F.01U.028.089 | 5.4 | 2009.08
1,25mA
7,5mA 5mA
25 30 35 40 45 50
Cable length in meters
Number of LSN elements
3000 m limit
Maximum possible number of LSN elements = 127
Product Information
4,5mA
4mA
55 60 65 70 75 80
Modular Fire Panel
3,5mA 3mA
2,5mA
85 90 95 100 105 110 115 120 125 130
Bosch Sicherheitssysteme GmbH
b = 127
0,4mA
0,7mA
1mA
1,5mA
2mA