Lenze EMF2181IB Instructions De Montage page 66

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Bus cable length
It is absolutely necessary to comply with the permissible cable lengths.
1. Check the compliance with the total cable length in Tab. 1.
The total cable length is determined by the baud rate.
Baud rate [kbit/s]
20
50
125
250
500
1000
Tab. 1 Total cable length
2. Check the compliance with the segment cable length in Tab. 2.
The segment cable length is determined by the cable cross-section used and by the number
of nodes. Without repeaters the segment cable length corresponds to the total cable length.
Cable cross-section
0.25 mm
Nodes
2 240 m
5 230 m
10 230 m
20 210 m
32 200 m
63 170 m
100 150 m
Tab. 2 Segment cable length
3. Compare both values.
If the value given in Tab. 2 is smaller than the required total cable length from Tab. 1,
repeaters must be used. Repeaters divide the total cable length into segments.
EDKMF2181 DE/EN/FR/ES/IT 3.0
Max. bus length [m]
3600
1400
550
250
110
20
2 2
0.5 mm
430 m
420 m
410 m
390 m
360 m
310 m
270 m

Electrical installation
Connection of system bus (CAN)
2
0.75 mm
650 m
640 m
620 m
580 m
550 m
470 m
410 m
6
2
1.0 mm
940 m
920 m
900 m
850 m
800 m
690 m
600 m
55