Ground Connections - Bosch Rexroth IndraDrive FC Series Operating Instructions Manual

54/69 Bosch Rexroth AG
EMC Measures for Design and Installation
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 Cable duct for motor power cables
4 Parallel routing of mains connection lines
and motor power cables over a maximum of
300 mm
5 Distance of at least 100 mm or separated by
a grounded distance plate
Fig.6-2: Routing of Motor Power Cables With Cable
Duct
6.3

Ground Connections

Housing and Mounting Plate
Connection Elements
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Rexroth IndraDrive Fc Drive Controllers Frequency Converters FCS01
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 sup‐
ply cable.
Converter - Routing the Motor Power Cables
Without cable duct
B
C
1
2
3
4
5
Fig.6-3:
Fig.6-4: Routing of Cables for Converter
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 lac‐
quered plate, the connections in this case have a good long-time stability.
For lacquered 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 lacquer so that there is safe electrical contact over
a large surface area. You achieve contact over a large surface area by
DOK-INDRV*-FCS01******-IT01-EN-P
Area B
Area C
Cable duct for mains connection lines
Shield connection of motor power cable via
clips at least at one point; alternatively, at
the device or on mounting plate at control
cabinet
Control cabinet outlet of motor power cables
Parallel routing of mains connection lines
and motor power cables over a maximum of
300 mm
Distance of at least 100 mm or separated by
a grounded distance plate
Routing of Motor Power Cables Without Ca‐
ble Duct