Operating instructions

6-26 Mounting and Installation Rexroth IndraDrive
DOK-INDRV*-FU*********-IB01-EN-P
with low impedance, in order to avoid low-frequency interference current
(in the mains frequency range) on the shield.
Keep connection lines of mains chokes as short as possible and twist
them.
• Preferably use the motor power cables with shield provided by
Rexroth. If you use other motor power cables, they have to be run in
shielded form.
• Keep length of motor power cable as short as possible.
• Ground shield of motor cable at both ends over the largest possible
surface area to establish a good electrical connection.
• Run motor lines in shielded form inside the control cabinet.
• Do not use any steel-shielded lines.
• The shield of the motor cable mustn't be interrupted by mounted
components, such as output chokes, sine filters, motor filters.
EMC-Optimal Installation in Facility and Control Cabinet
With regard to EMC-optimal installation, a spatial separation of the
interference-free area (mains connection) and the interference-
susceptible area (drive components) is recommended, as shown in the
figures below.
Note: For EMC-optimal installation in the control cabinet use a
separate control cabinet panel for the drive components.
Division into Areas (Zones)
The arrangement in the control cabinet can be seen from Fig. 6-31.
There are three areas to be distinguished:
1. Interference-free area of control section (area A):
This includes:
• supply feeder, input terminals, fuse, main switch, mains side of mains
filter for drives and corresponding connecting lines
• control voltage or auxiliary voltage connection with power supply unit,
fuse and other parts unless connection is run via the mains filter of
the AC drives
• all components that aren't electrically connected with the drive system
2. Interference-susceptible area (area B):
• mains connections between drive system and mains filter for drives,
mains contactor
• interface lines of drive controller
3. Strongly interference-susceptible area (area C):
• motor cable including single strands
Never run lines of one of these areas in parallel with lines of another area
so that there isn't any unwanted interference injection from one area to
the other and that the filter is jumpered with regard to high frequency.
Keep connection lines as short as possible.
For complex systems it is recommended to put the drive components into
a cabinet and the controls into a separate second cabinet.
Connection of Mains Choke to
Drive Controller
Installation of Motor Power
Cable