Lenze EMF2178IB - Manual (Page 61)

Electrical installation
Wiring of system bus (CAN)
6
EDKMF2178IB DE/EN/FR 6.0
61
l
h2_can−Bus−Leitungslaenge_2178
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 Cable cross−section
(can be interpolated)
0.25 mm 2
(AWG24)
0.5 mm 2
(AWG21)
0.75 mm 2
(AWG19)
1.0 mm 2
(AWG18)
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
100 150 m 270 m 410 m 600 m
Tab. 2 Segment cable length
Example: Selection help
Given
Total cable length to be implemented 200 m
Number of nodes 63
Results
Max. possible baud rate 250 kbps
(derived from Tab. 1 Total cable length)
Required cable cross−section
(interpolated) 0.30 mm 2 (AWG23)
(derived from Tab. 2 Segment cable length)
Cable cross−section of standard CAN
cable 0.34 mm 2 (AWG22)
(see specification of the transmission cable ^ 59)