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Rexroth IndraDrive
DC Bus (L+, L-)
Tightening Torque
DC Bus Wiring
DOK-INDRV*-HMV-*******-PR01-EN-P
The DC bus connection connects
• the supply unit to the drive controller
• the supply unit 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
Design
the drive controller. There are various lengths of contact rail depending on
the width of the drive controllers.
Fig. 7-12:
Contact rails
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 wires.
Length of the twisted wire
Wire cross-section
Wire protection
Voltage stability of a single strand against
grounding
CAUTION
Risk of voltage arcing!
⇒ If wires instead of contact rails are used to connect
the supply unit, the connections have to be correctly
made (see page 13-1 onward).
7-17
Electrical Installation
schienen_zwkreis
max. 2 m
min. 10 mm²,
however, no less than the
cross-section of the power
input line
by means of fuses in the
mains supply
> 750 V
(e.g., strand type - H07)
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