Inverter - Routing the Motor Power Cables
With cable duct
Without cable duct
B
Area B
C
Area C
1
Cable duct for mains connection lines
2
Shield connection of motor power cable via
clips at least at one point; alternatively, at
the device or on mounting plate at control
cabinet
3
Cable duct for motor power cables
Fig.11-11:
Routing of Motor Power Cables With Cable
Duct
B
Area B
C
Area C
1
Cable duct for mains connection lines
2
Shield connection of motor power cable via
clips at least at one point; alternatively, at
the device or on mounting plate at control
cabinet
3
Control cabinet outlet of motor power cables
Fig.11-12:
Routing of Motor Power Cables Without Ca‐
ble Duct
Tab.11-8:
Routing of Cables for Inverter
Ground Connections
Housing and Mounting Plate
By means of appropriate ground connections, it is possible to avoid the emis‐
sion of interference, because interference is discharged to ground on the
shortest possible way.
Ground connections of the metal housings of EMC-critical components (such
as filters, devices of the drive system, connection points of the cable shields,
devices with microprocessor and switching power supply units) have to be
well contacted over a large surface area. This also applies to all screw con‐
nections between mounting plate and control cabinet wall and to the mount‐
ing of a ground bus to the mounting plate.
The best solution is to use a zinc-coated mounting plate. Compared to a var‐
nished plate, the connections in this case have a good long-time stability.
Connection Elements
For varnished mounting plates, always use screw connections with tooth lock
washers and zinc-coated, tinned screws as connection elements. At the con‐
nection points, remove the varnish so that there is safe electrical contact over
a large surface area. You achieve contact over a large surface area by
means of bare connection surfaces or several connection screws. For screw
connections, you can establish the contact to varnished surfaces by using
tooth lock washers.
Metal Surfaces
Always use connection elements (screws, nuts, plain washers) with good
electroconductive surface.
Bare zinc-coated or tinned metal surfaces have good electroconductive prop‐
erties.
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
Bosch Rexroth AG
211/309
Arranging the Components in the Control Cabinet
