11 Annex
11.14 Radio interference suppression filter
210 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
11.14 Radio interference suppression filter
The DX-EMC1… and DX-EMC3… external radio interference suppression
filters can be used to further limit emitted interference (EMC) in the relevant
environment. The ability to stay within the permissible limits (category C1,
C2, C3) in the 1st environment (public grid) or 2nd environment (industrial
supply network) will depend on the motor cable length and on switching
frequency f
PWM
of the inverter in the DC1 variable frequency drive.
Figure 117: Radio interference suppression filter
The radio interference suppression filters can be mounted side by side with
the variable frequency drives without any lateral clearance between them.
The connection must be made on the mains side (LINE) using screw
terminals L and N in DX-EMC12-… devices and terminals L1, L2, L3 in
DX-EMC-34… devices. The variable frequency drives need to be connected
to the screw terminals labeled LOAD.
The PE connection needs to be made using the stud marked with a grounding
symbol. The radio interference suppression filters have low leakage currents.
The rated value at 50 Hz with mains voltage fluctuations of ±10% is < 3.00 mA
for DX-EMC1… devices and < 0.40 mA for DX-EMC3… devices.
￫
The DX-EMC1… and DX-EMC3… radio interference suppres-
sion filters must only be used together with the recommended
DC1-…N… variable frequency drives (which do not have an inte-
grated radio interference suppression filter).
In the case of variable frequency drives with an internal radio inter-
ference suppression filter, theEMC screw must be used instead.
￫
For more information and technical data on the DX-EMC1… and
DX-EMC3… radio interference suppression filters, please refer
to instructional leaflet IL04012017ZU.
LINE
L0AD
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