K1 External mains contactor for supply units without integrated
mains contactor
M
L
Motor fan
NT Power supply unit
Q1, Q2, Q3 Fusing
T Transformer
Z1, Z2 Shield connection points for cables
Fig. 10-7: EMC areas in the control cabinet
Design and installation in area A - control cabinet area free from inter‐
ference
Arranging the components in the
control cabinet
Comply with recommended distance of at least 200 mm (distance d1 in the
figure):
● Between components and electrical elements (switches, pushbuttons,
fuses, terminal connectors) in interference-free area A and the
components in the two other areas B and C
Comply with recommended distance of at least 400 mm (distance d4 in the
figure):
● Between magnetic components (such as transformers, mains chokes
and DC bus chokes that are directly connected to the power
connections of the drive system) and the interference-free components
and lines between mains and filter including the mains filter in area A
If these distances are not complied with, the magnetic leakage fields are
injected to the interference-free components and lines connected to the
mains, and the limit values at the mains connection are exceeded in spite of
the installed filter.
Cable routing for interference-free
lines to the mains connection
Comply with recommended distance of at least 200 mm (distances d1 and d3
in the figure):
● Between supply feeder or lines between filter and exit point from the
control cabinet in area A and the lines in areas B and C
If this is impossible, there are two alternatives:
1. Install lines in shielded form and connect the shield at several points (at
least at the beginning and at the end of the line) to the mounting plate or
the control cabinet housing over a large surface area.
2. Separate lines from the other interference-susceptible lines in areas B
and C by means of a grounded distance plate vertically attached to the
mounting plate.
Install the shortest possible lines within the control cabinet and install them
directly on the grounded metal surface of the mounting plate or of the control
cabinet housing.
Mains supply lines from areas B and C should not be connected to the mains
without a filter.
In case you do not observe the information on cable routing given
in this section, the effect of the mains filter is totally or partly
neutralized. This will cause the noise level of the interference
emission to be higher within the range of 150 kHz to 40 MHz and
the limit values at the connection points of the machine or
installation will thereby be exceeded. Consider the specified
distances to be recommended data, provided that the dimensions
of the control cabinet allow installing the lines accordingly.
58/123
Mounting, dismounting and electrical installation
IndraDrive X Drive Controllers Power Sections XCS1, XMD1,
XMQ1
Bosch Rexroth AG R911392532_Edition 01
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