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 40.
Install the shortest possible lines between drive controller and filter.
Control Voltage or Auxiliary Voltage
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 Installation in
Area A - Interference-Free Area of Control Cabinet, page 43.
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 Cable
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 motor
power cables and (unfiltered) mains connection lines in parallel for a maximum
distance of 300 mm. After that distance, route motor power cables and power
supply cables in opposite directions and preferably in separate cable ducts.
Ideally, the outlet of the motor power cables at the control cabinet should be
provided in a distance of at least d3 = 200 mm from the (filtered) power supply
cable.
Instruction Manual | Rexroth IndraDrive Electric Drives
and Controls
| Bosch Rexroth AG 45/65
EMC Measures for Design and Installation
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