Rexroth IndraDrive C Electrical Data 6-39
DOK-INDRV*-HCS02.1****-PR02-EN-P
DC Bus (L+, L-)
The DC bus connection connects
• several drive controllers to one another, and
• drive controllers to additional components in order to
• increase the stored power by means of DC bus capacitor unit
• increase the permissible braking resistor continuous output by
means of DC bus resistor unit
The DC bus is connected by contact rails and screws (M6) to the front of
the drive controller. There are various lengths of contact rail depending on
the width of the drive controllers.
6 Nm
If in special cases it is not possible to use the DC bus rails provided to
make the connection, the connection must be made using the shortest
possible twisted cables.
Length of the twisted cables max. 2 m
Wire cross-section min. 10 mm²,
however, no less than the cross-
section of the power input line
Wire protection by means of fuses in the mains
supply
Voltage stability of a single strand against
ground
> 750 V
(e.g., strand type - H07)
CAUTION
Risk of voltage arcing!
⇒
If drive controllers are stacked in the control cabinet,
the connections for the DC buses between the drive
controllers have to be correctly made. There is
otherwise a risk of voltage arcing (See project
planning manual "Rexroth IndraDrive Drive System",
DOK-INDRV*-SYSTEM*****-PRxx-EN-P.)
Design
Tightening Torque
DC Bus Wiring
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