Lenze 8400 motec Series User Manual

Lenze · Decentralised frequency inverter 8400 motec (CANopen option) · EDS84DMOTCAN EN 4.0 - 02/2019 25
Installation
Electrical installation
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Segment cable length
2. Check that the segment cable length is not exceeded
The segment cable length is defined by the used cable cross-section and by the number of
nodes. Without repeaters the segment cable length corresponds to the total cable length.
[5-2] Segment cable length
3. Compare both values.
If the value determined from the Segment cable length
[5-2] table is smaller than the
required total cable length Total cable length
[5-1], repeaters must be used. Repeaters
divide the total cable length into segments.
Example: Selection help
Based on the given specifications, the following cable lengths/number of repeaters result for a
maximum of 63 nodes:
Checking the use of repeaters
Maximum number of
nodes per segment
Cable cross-section
0.25 mm
2
0.5 mm
2
0.75 mm
2
1 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
Given
• Cable cross-section: 0.5 mm
2
, according to Specification of the bus cable ( 24)
• Number of nodes: 63
• Repeater: Lenze repeater, type 2176 (cable reduction: 30 m)
Baud rate [kbps] 20 50 125 250 500 800 1000
Max. cable length [m] 4013 1575 600 275 113 38 13
Segment cable length [m] 270 270 270 270 113 38 13
Number of repeaters 15621- - -
 Note!
The use of an additional repeater is recommended as:
•Service interface
• Advantage: Trouble-free connecting during ongoing bus operation is possible.
• Calibration interface
• Advantage: Calibration/programming units remain electrically isolated.

Lenze 8400 motec Series Specifications

General

Brand	Lenze
Model	8400 motec Series
Category	DC Drives
Language	English