Installation According To The European Directive Of Electromagnetic Compatibility; Conformal Installation - WEG CFW-11 User Manual

3.4 INSTALLATION ACCORDING TO THE EUROPEAN DIRECTIVE OF ELECTROMAGNETIC
COMPATIBILITY
The inverters with the option FA (CFW11XXXXXXOFA) are equipped with an internal RFI filter to reduce
the electromagnetic interference. These inverters, when properly installed, meet the requirements of the
electromagnetic compatibility directive - "EMC Directive 2004/108/EC".
The CFW-11 inverter series has been designed only for industrial applications. Therefore, the emission limits of
harmonic currents defined by the standards EN 61000-3-2 and EN 61000-3-2/A 14.
ATTENTION!
Do not use inverters with internal RFI filters in IT networks (neutral is not grounded or grounding
provided by a high ohm value resistor) or in grounded delta networks ("delta corner earth"), because
these type of networks damage the filter capacitors of the inverter.

3.4.1 Conformal Installation

For the conformal installation use:
1. Inverters with internal RFI filters option CFW11XXXXXXOFA (with grounding screws of the internal RFI filter
capacitors).
2. a) Shielded output cables (motor cables) and connect the shield at both ends (motor and inverter) with a
low impedance connection for high frequency. Use the PCSx-01 kit supplied with the frame size A, B and
C inverters. For the frame sizes D models, use the clamps supplied with the product. Make sure there is
a good contact between the cable shield and the clamps. Refer to the
example. The required cable separation is presented in
please refer to
Maximum motor cable length and conduced and radiated emission levels according to the
on page 3-46. If a lower emission level and/or a longer motor cable were wished, then an external RFI
filter must be used at the inverter input. For more information (RFI filter commercial reference, motor cable
length and emission levels) refer to the
b) As a second option only for the V/f and VVW control modes when using a sinusoidal output filter:
Output cables (motor cables) that are not shielded can be used, provided that RFI filters are installed at
the inverter input and output, as presented in the
cable length and the emission levels for each configuration are also presented. Keep the separation
from the other cables according to the
Connections on page
3. Shielded control cables, keeping them separate from the other cables as described in
Connections on page
4. Inverter grounding according to the instructions on
Item 3.2.3 Power Connections on page
Table 3.14 on page
Table 3.5 on page
3-26.
3-28.
Installation and Connection
Figure 3.15 on page 3-26
Table 3.5 on page 3-25. For further information,
3-16.
3-46.
Table 3.15 on page 3-47
3-25. Refer to the
Item 3.2.4 Grounding Connections on page
as an
Table 3.14
In that table the maximum
Item 3.2.4 Grounding
Item 3.2.5 Control
3-26.
CFW-11 | 3-43
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