conductor is bigger, the cross section of the equipment grounding conductor
must be accordingly bigger.
6.2.5 Design and Installation in Area B - Interference-Susceptible Area of
Control Cabinet
Arranging Components and Lines
Modules, components and lines in area B should be placed at a distance of
at least d1 = 200 mm from modules and lines in area A.
Alternative: Shield modules, components and lines in area B by distance
plates mounted vertically on the mounting plate from modules and lines in
area A or use shielded lines.
Only connect power supply units for auxiliary or control voltage connections
in the drive system to the mains via a mains filter. See 6.2.2 Division Into
Areas (Zones), page 50.
Install the shortest possible lines between drive controller and filter.
Control Voltage or Auxiliary Volt‐
age Connection
Only in exceptional cases should you connect power supply unit and fusing
for the control voltage connection to phase and neutral conductor. In this
case, mount and install these components in area A far away from the areas
B and C of the drive system. For details see section 6.2.4 Design and Instal‐
lation in Area A - Interference-Free Area of Control Cabinet, page 53.
Run the connection between control voltage connection of the drive system
and power supply unit used through area B over the shortest distance.
Line Routing
Run the lines along grounded metal surfaces, in order to minimize radiation
of interference fields to area A (transmitting antenna effect).
6.2.6 Design and Installation in Area C - Strongly Interference-Susceptible
Area of Control Cabinet
Area C mainly concerns the motor power cables, especially at the connection
point at the drive controller.
Influence of the Motor Power Ca‐
ble
The longer the motor power cable, the greater its leakage capacitance. To
comply with a certain EMC limit value, the allowed leakage capacitance of
the mains filter is limited. For the calculation of the leakage capacitance, see
the documentation on the drive system of the drive controller used.
● Run the shortest possible motor power cables.
● Only use shielded motor power cables by Rexroth.
Routing the Motor Power Cables
and Motor Encoder Cables
Route the motor power cables and motor encoder cables along grounded
metal surfaces, both inside the control cabinet and outside of it, in order to
minimize radiation of interference fields. If possible, route the motor power
cables and motor encoder cables in metal-grounded cable ducts.
Route the motor power cables and motor encoder cables
● with a distance of at least d5 = 100 mm to interference-free lines, as
well as to signal cables and signal lines
(alternatively separated by a grounded distance plate)
● in separate cable ducts, if possible
Routing the Motor Power Cables
and Mains Connection Lines
For converters (drive controllers with individual mains connection), route mo‐
tor power cables and (unfiltered) mains connection lines in parallel for a maxi‐
mum distance of 300 mm. After that distance, route motor power cables and
power supply cables in opposite directions and preferably in separate cable
ducts.
DOK-INDRV*-HCS03******-IT01-EN-P
Rexroth IndraDrive Drive Controllers Power Sections HCS03
Bosch Rexroth AG 55/67
EMC Measures for Design and Installation
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