Electrical installation – Lenze 8400 User Manual
Page 217
Electrical installation
Common control terminals
System bus connection (CANopen)
6
217
EDS84ASC552 EN 9.1
Segment cable length
2. Check whether the segment cable length is complied with.
The segment cable length is determined by the used cable cross-section and the number
of nodes. If no repeaters are used, the segment cable length corresponds to the total cable
length.
Maximum number
of nodes per
segment
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. 6-2
Segment cable length
3. Comparison of the two determined values.
If the value determined from Tab. 6-2 is lower than the total cable length to be
implemented from Tab. 6-1, repeaters must be used. Repeaters divide the total cable
length into segments.
Example: Selection help
Selections
Cable cross-section:
0.5 mm
2
(acc. to cable specification 214)
Number of nodes:
63
Repeater:
Lenze repeater, type 2176 (cable reduction: 30 m)
For a max. number of nodes (63), the following cable lengths / numbers of repeaters must
be complied with according to selection:
Baud rate [kbps]
10
20
50
125
250
500
800
1000
Max. cable length [m]
8075
4013
1575
600
275
113
38
13
Segment cable length [m]
270
270
270
270
270
113
38
13
Number of repeaters
30
15
6
2
1
-
-
Check the use of repeaters
Note!
The use of another repeater is recommended as
ƒ
Service interface
Advantage: Trouble-free connection to running bus operation is possible.
ƒ
Calibration interface
Advantage: The calibration / programming unit remains electrically
isolated.
Selections
Baud rate:
125 kbps
Cable cross-section:
0.5 mm
2
Number of nodes:
28
Cable length:
450 m