Siemens FS20 - Page 81

Planning detector lines
Planning an FDnet detector line
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Building Technologies
008843_v_en_
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Fire Safety
2015
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7.1.9.2 Diagram for line cards with one loop
This diagram is used to verify the ↑ maximum current connection factor reserve
(MK_res) for all line cards, without or without ↑ loop extension, on which only one
loop is operated.
Conditions
● Max. 252 devices per loop
● Loop operation only.
Figure 26: ↑ Maximum current connection factor reserve (MK_res) for the operation of one ↑ loop
AK
2
0
O
h
m
3
0
O
h
m
5
0
O
h
m
7
5
O
h
m
1
0
0
O
h
m
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
M
K
_
l
i
m
i
t
(
5
0
0
m
A
)
25
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
MK_res
1500
0 50 75 100 125 150
175 200 225
250