Installation
Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10
165
of 314
7
In order to have EMC-compliant and problem-free use within the framework of the legis-
lation, the following aspects must be taken into account.
In case of any questions, please contact Sales or the Applications department of
Baumüller Nürnberg GmbH.
m Only use Baumüller motor cables and Baumüller components.
m Use suitable mains filters recommended by Baumüller Nürnberg GmbH.
m Mount all components on a single mounting plate with a continuously good electrically-
conductive surface (e.g. galvanized steel plate).
m Keep the ground connection device/ground plate as short as possible (< 30 cm), using
fine-stranded cables with a large cross section (>10
mm²).
m When installing, be sure to follow the correct sequence:
power supply system - fuse - filter - choke - (ferrite core) - BM5500, BM5600, BM5700
- (motor filter) - motor.
m Ensure that the motor cable is continuous, without interruption.
Do not interrupt motor cables with terminals, contactors or fuses, for example.
m If possible route the cables on the surface of the grounded mounting plate
(i. e. the least effective antenna height).
m When routing in parallel, minimum clearance of 20 cm should be observed between
signal and control cables vis-à-vis the power cables.
m Cables of different EMC categories (e.g. signal cables - mains cables and/or motor ca-
bles) should be crossed at a 90 ° angle.
m Contact the major cable shield when laying cables through walls, which separate dif-
ferent EMC areas
m Contact all the cable’s shields on both sides surface-to-surface and also well-conduc-
tive with ground.
7.8 Avoid bearing currents
NOTE
The pulsed output voltage of a converter causes additional motor bearing currents.
Bearing currents cause localized melting on ball race and rolling body as well as wear
of the lubricant. This leads to a reduced service life of the bearing.
Bearing currents depend on:
m Motor speed
m Switching frequency of the converter
m Grounding
Furthermore the height of the bearing currents depends on:
m The applied bearing voltage
m The dielectric characteristic of the bearing lubrication
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