Length of hybrid cable without communication
Allowed cable length depending on load
The maximum allowed total length is limited depending on the
kind of load on the hybrid cable.
Observe the following limit values for total length and segment
length within a drive line.
The number of KSM/KMS devices in the drive line has an
influence on the allowed cable length (see also chapter "Hybrid
cable length vs. KCU performance" on page 231).
Definition of the cable lengths
l
total
Total length
l
seg
Segment length
Fig. 7-13: Definition of the lengths
Allowed lengths
Limit values Symbol Unit Value
min max
For permanent routing
Total length
1)
l
total
m 3 200
Segment length from supply component
(e.g., KCU) to first KSM/KMS
l
seg_1
m
3
2)
75
Segment length
3)
l
seg_2
m
1
4)
75
1)
Total length: Total cable length from connection point of supply
component (e.g., KCU) to last KSM/KMS of a drive line
2)
For electric decoupling at rated current
3)
Segment length: Cable length between two KSM/KMS
4)
For thermal decoupling of the connection points at rated cur‐
rent
Tab. 7-5: Cable length limit values
230/407
Notes on project planning
IndraDrive Mi Drive Systems with KCU02, KSM02,
KMS02/03, KMV03, KNK03, KLC03
Bosch Rexroth AG R911335703_Edition 04
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