54/69
Bosch
Rexroth
AG
DOK-INDRV*-HCS02*UL
***-IB03-EN-P
Rexroth
l
ndraDrive
Drive
Controllers
Power
Sections
HCS02
EMC Measures for Design and Installation
Motor Blower at
Mains
Filter Single-phase or three-phase supply lines
of
motor blowers, that are usually
routed
in
parallel with motor power cables or interference-susceptible lines,
must be filtered:
•
In
drive systems with regenerative supply units, via a separate single-
phase (NFE type) or three-phase filter (HNF type) near the mains con-
nection of the
control cabinet
•
In
drive systems with only infeeding supply units, via the available three-
phase
filter of the drive system
When switching power off, make sure the
blower is not switched off.
Loads
at
Ma
i
ns
Filter of
Drive
Sys-
~
tern
~
Only operate allowed loads at the mains filter
of
the drive system!
At the three-phase filter for the power connecti
on
of
regenerative
supply units, it is only allowed to operate the following loads:
• HMV supply
unit with mains choke and, if necessary, mains
contactor
Do not operate any motor
blowers, power supply units etc. at the
mains filter of the drive system.
Sh
i
elding
Mains
Supply
Lines
in
If there is a high degree of interference injection to the mains supply line within
Control
Cabinet
the control cabinet, although you have observed the above instructions (to be
found out by EMC measurement according to standard), proceed as follows:
• Only use shielded lines
in
area A
• Connect shields to the mounting plate at the beginning and the end
of
the
line by means of clips
The same procedure may be required for long cables
of
more than
2m
between
the point
of
power supply connection
of
the control cabinet and the
fi
lter within
the control cabinet.
Mains
Filters for
AC
Drives
Ideally, mount the mains filter
on
the parting line between area A and
B.
Make
sure the ground connection between
filter housing and housing
of
the drive
controllers has good electrically conductive properties.
Grounding
Point
of
Connection
for
Equipment
Grounding
Conductor at
Machine,
Installation,
Control
Cabinet
If single-phase loads are connected
on
the load side
of
the filter, their current
may be a maximum of 10% of the three-phase operating current. A highly im-
balanced
load of the filter would deteriorate its interference suppression ca-
pacity.
If the mains voltage is more than 480 V, connect the filter to the output side of
the transformer and not to the
supply side
of
the transformer.
In
the case
of
bad ground connections
in
the installation, the distance between
the
lines to the grounding points
E1
,
E2
in
area A and the other grounding points
of the drive system
should be at least d4 = 400 mm,
in
order to minimize inter-
ference injection from ground and ground cables to the power input lines.
See also 6.2.2 Division Into Areas (Zones), page
50
.
The equipment grounding conductor
of
the power cable
of
the machine, instal-
lation
or control cabinet has to
be
permanently connected at point
PE
and have
a cross section
of
at least 10 mm
2
or to be complemented by a second equip-
ment grounding conductor via separate terminal connectors (according to
EN
61800-5-1 :2007, secti
on
4.3.5.5.2). If the cross section of the outer conductor
is bigger, the cross section of the equipment grounding conductor must be ac-
cordingly bigger.
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