Siemens FS20 - Page 83

Planning detector lines
Planning an FDnet detector line
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Building Technologies
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Fire Safety
2015
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7.1.9.4 Diagram for line cards with four loops or four stubs
This diagram serves to verify the ↑ maximum current connection factor reserve
(MK_res) for ↑ line cards with connections for four ↑ loops or four ↑ stubs. The
following line cards are affected by this:
● Integrated line card with loop extension (operation of four loops)
● Integrated line card without loop extension (operation of four stubs)
● Line card (FDnet) FCL2001-A1 (operation of four loops or four stubs)
Conditions
● Max. 63 devices per loop or stub
● Only ↑ loops or ↑ stubs are operated on all connections.
Figure 28: ↑ Maximum current connection factor reserve (MK_res) for the operation of four ↑ loops or
four stubs
0
50
100
150
200
250
300
350
1
2
5
O
h
m
1
5
0
O
h
m
1
8
0
O
h
m
2
1
0
O
h
m
2
4
0
O
h
m
0
10
20
30
40
50
60
AK
MK_res
M
K
_
l
i
m
i
t
(
1
2
5
m
A
)