Lenze CANopen EMF2178IB Instructions De Montage page 62

6 Electrical installation
Wiring of system bus (CAN)
Segment cable length
The segment cable length is determined by the cable cross−section used and by the number
of nodes. Repeaters divide the total cable length into segments. If no repeaters are used, the
segment cable length is identical to the total cable length.
Max. number of
nodes per
segment
2
5
10
20
32
63
100
Tab. 2 Segment cable length
Example: Selection help
Given
Total cable length to be implemented
Number of nodes
Results
Max. possible baud rate
Required cable cross−section
(interpolated)
Cable cross−section of standard CAN
cable
62
Cable cross−section
(can be interpolated)
2
0.25 mm 0.5 mm
(AWG24) (AWG21)
240 m 430 m
230 m 420 m
230 m 410 m
210 m 390 m
200 m 360 m
170 m 310 m
150 m 270 m
200 m
63
250 kbps
(derived from Tab. 1 Total cable length)
0.30 mm
(derived from Tab. 2 Segment cable length)
0.34 mm
(see specification of the transmission cable ^ 60)
2
0.75 mm
(AWG19)
650 m
640 m
620 m
580 m
550 m
470 m
410 m
2
(AWG23)
2
(AWG22)
l
2 2
1.0 mm
(AWG18)
940 m
920 m
900 m
850 m
800 m
690 m
600 m
EDKMF2178IB DE/EN/FR 6.1