Lenze E82ZAFCC100 Instructions De Montage page 55

Check repeater application
Given:
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Baud rate:
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Cable cross−section:
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Number of nodes:
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Cable length:
Procedure
1. Total cable length at 125 kbps:
2. Segment cable length for 28 bus nodes and a cable
cross−section of 0.5 mm
3. Comparison: The value under 2. is smaller than the cable length of 450 m.
Conclusion
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It is not possible to use a cable length of 450 m without using a repeater.
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After 360 m (item 2.), a repeater must be installed.
Result
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The Lenze repeater type 2176 is used (cable reduction: 30 m)
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Calculation of the maximum cable length:
First segment: 360 m
Second segment: 360 m (according to Tab. 1) minus 30 m (cable reduction when a repeater is
used)
à Maximum possible cable length with repeater: 690 m.
à Now it is possible to use the required cable length.
)
Note!
The use of a further repeater is recommended as
Service interface
ƒ
Advantage: Trouble−free connection during running bus operation is
possible.
Calibration interface
ƒ
Advantage: Calibration/programming device remains isolated.
EDK82ZAFCC−100 DE/EN/FR 6.0
125 kbps
2
0.5 mm
28
450 m
2
:
l
Electrical installation
Bus cable length
Cable length
610 m
360 m
6
See
from Tab. 1
from Tab. 2
55