7.1.7 KCU02 drive connection box
General information
Functions
The drive connection box KCU mainly fulfills the following functions:
● Transmitting the power supply to the drive line
● 42V supply of the KSM/KMS in the drive line
● Transmitting the communication signals to the drive line
● Exchanging status signals between motors and supply unit
● Displaying the status signals of the drive line for diagnostic purposes
Arrangement
The KCU drive connection box is arranged next to the supply unit or next to
other axes mounted between supply unit and KCU. Axes with a high degree
of power consumption should be arranged as near as possible to the supply
unit.
Control voltage supply
The KCU drive connection box needs 24V supply for operation. From the
applied 24V supply,
● KCU supplies itself and
● at "X53, control voltage output" generates the 42V control voltage for
the KSM/KMS in the drive line.
Control voltage KCU, KSM, KMS
BR Circuit for brake control
I/O Inputs/outputs
int. Internal electronics
KCU Drive connection box
KMS Near motor servo drive
KSM Motor-integrated servo drive
Fig. 7-3: Control voltage KCU, KSM, KMS
At a KCU, it is permitted to operate KSM/KMS with and without integrated
holding brake (observe allowed number of axes and cable length). The load
at X53 should not exceed the value of P
out
(see technical data of KCU).
In operation under rated conditions, the sum of P
out
and P
Diss_cont
is generated
at the "control voltage supply +24V, 0V" input of KCU as load for the 24V
220/407
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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