Danfoss VLT 5000 Operating Instructions Manual page 11

The indicated lengths in the tables are valid
on the condition that bus cables with the
following properties are used:
- Impedance: 135 to 165 Ohm at a measuring
frequency of 3 to 20 MHz
- Resistance: < 110 Ohm/km
- Capacity: < 30 pF/m
- Damping: max. 9 dB across the entire
cable length
- Cross-section: max. 0.34 mm pursuant to
AWG 22
- Wire type: twisted pair, 1 x 2 or 2 x 2 or 1
x 4 conductors
- Shielding copper-braided or braided and
foil laminated
10
VLT® 5000/ 5000 FLUX/ 6000 HVAC/
8000 AQUA PROFIBUS
It is recommended to use the same cable type
throughout the entire network in order to avoid
mismatches of the impedance.
The figures in the following description indicate the
maximum permitted number of stations in each
segment. These figures do not refer to the station
addresses, since each station in the network must
have an unambiguous address.
MG.90.G1.02 - VLT is a registered Danfoss trademark
Segment 1
Segment 2
Segment 3
Segment 4