Electrical installation – Lenze ECSEExxx User Manual
Page 104
Electrical installation
Wiring of system bus (CAN)
4
104
EDKCSEE040 DE/EN/FR 4.0
Bus cable length
Note!
The permissible cable lengths must be observed.
1. Check the compliance with the total cable length in Tab. 4-1.
The baud rate determines the total cable length.
CAN baud rate [kbit/s]
Max. bus length [m]
50
1500
125
630
250
290
500
120
1000
25
Tab. 4-1
Total cable length
2. Check the compliance with the segment cable length in Tab. 4-2.
The segment cable length is determined by the cable cross-section used and the
number of nodes. Without a repeater, the segment cable length corresponds to
the total cable length.
Number of nodes Cable cross-section
0.25 mm
2
0.5 mm
2
0.75 mm
2
1.0 mm
2
2
240 m
430 m
650 m
940 m
5
230 m
420 m
640 m
920 m
10
230 m
410 m
620 m
900 m
20
210 m
390 m
580 m
850 m
32
200 m
360 m
550 m
800 m
63
170 m
310 m
470 m
690 m
Tab. 4-2
Segment cable length
3. Compare the two values detected.
If the value detected from Tab. 4-2 is smaller than the total cable length to be
provided fromTab. 4-1 ,repeaters mustbe used.Repeaters dividethe totalcable
length into segments.