Power supply to KSM/KMS (KCU)
A drive line for power supply in the IndraDrive Mi system is designed as a
bus (L+, L-) and consists of:
● X54 connector at KCU
● RKH hybrid cable
● X103.1 and X103.2 connectors at KSM/KMS
● RHS0014 terminal connector at KSM/KMS
Comply with UL rating I
Bypass
In the case of equal load, the greatest load of the hybrid cable is
on the first cable segment.
In the drive line, place powerful KSM/KMS as near as possible to
the output of the drive connection box KCU.
Observe the maximum allowed bypass current I
Bypass
in each
segment (see technical data of KSM or technical data of KMS).
If necessary, install more KCU devices.
Available power at drive line
Available power P
KCU_strang
at a drive line:
P
KCU_strang
Available power at drive line
U
out
Output voltage, depending on supply unit
I
out_max
Output current; see technical data of KCU
Fig. 7-6: Available power at KCU drive line
With a small number of KSM/KMS and a low degree of power consumption in
a drive line (operation at partial load), the measurable value I
strang
at the
output of KCU is above the value which would result from the calculation of
the power P
LN
of KSM/KMS and U
out
of KCU. The deviation is due to reactive
currents. The influence of these currents is insignificant in operation under
rated conditions.
Continuous power
Comply with continuous power
The sum of the electric powers of all KSM/KMS of a drive line
should not exceed the calculated value P
KCU_strang
of the KCU
drive connection box.
P
LN_nenn
Nominal power KSM/KMS
P
KCU_strang
Available power at drive line
Fig. 7-7: Checking the continuous power
Instead of P
LN_nenn
, it is allowed to use the actually occurring
continuous power of the KSM/KMS.
Taking the average speed and simultaneity factor into account,
the sum of the installed rated motor powers therefore can be
significantly higher with servo operation.
222/407
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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