Fig.5-15: DC Bus Connection With Contact Bars
Notes on Installation
If in special cases it is not possible to use the contact bars provided to estab‐
lish the connection, the connection must be established using the shortest
possible twisted wires.
Risk of damage by reversing the polarity of
the DC bus connections L+ and L-
Make sure the polarity is correct.
Length of twisted wire Max. 2 m
Line cross section
Min. 10 mm
2
,
but not smaller than cross section of supply feed‐
er
Line protection By means of fuses in the mains connection
Dielectric strength of single
strand against ground
≥ 750 V (e.g.: strand type – H07)
Fig.5-16: DC Bus Line
5.2.9 Ground Connection
The ground connection of the housing is used to provide functional safety of
the drive controllers and protection against contact in conjunction with the
equipment grounding conductor.
Ground the housings of the drive controllers:
1. Connect the bare metal back panel of the drive controller in conductive
form to the mounting surface in the control cabinet. To do this, use the
supplied mounting screws.
2. Connect the mounting surface of the control cabinet in conductive form
to the equipment grounding system.
3. For the ground connection, observe the maximum allowed ground re‐
sistance.
Bosch Rexroth AG DOK-INDRV*-HCS03******-IT01-EN-P
Rexroth IndraDrive Drive Controllers Power Sections HCS03
42/67
Instructions for Use
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