Installation
Electrical installation
Bus cable length
5
l
28
EDSMF2178IB EN 3.0
5.2.5.2 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. 5−2 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. 5−1 Total cable length)
Required cable cross−section (interpolated) 0.30 mm
2
(AWG23)
(derived from Tab. 5−2 Segment cable length)
Cable cross−section of standard CAN cable 0.34 mm
2
(AWG22)
(see specification of the transmission cable ^ 26)
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