Dräger VarioGard, Instructions For Use Manual, Page: 41 / 280

Dräger VarioGard 41
Installation
Cable type NYM-0 3x1,5 mm
2
Total of busloads
1 Permissible area 1: always functional I Limit of line capacity
2 Transition area 2: functions with even load distribution II Limit voltage drop
3 Prohibited area 3: non functional III Limit supply central device
Example: 10 sensors (MF) VarioGard 3200 CAT have the bus load 25 (10x2.5). If the total length of all NYM cable sections is shorter than
650 meters, the system is always functional. If you distribute the bus loads approximately evenly, the total length may measure 1000 meters.
The spacing would on average be (1000 m / 10 MF) = 100 meters.
1
0
100
200
300
400
500
600
700
800
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1000
1100
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
2
3
1
I
II
III
01
133185.eps
To
ta
l length of the lines
(m)