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

Installation and Connection
3.4 INSTALLATION ACCORDING TO THE EUROPEAN DIRECTIVE OF ELECTROMAGNETIC
COMPATIBILITY
The frame size E CFW-11 inverters have an internal RFI filter for the reduction of 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/A14 are not applicable.
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 earthed"), because
these type of networks damage the filter capacitors of the inverter.

3.4.1 Conformal Installation

3
For the conformal installation use:
1. J1 cable in the position
2. a) Shielded output cables (motor cables) with the shield connected at both ends, motor and inverter, by
means of a low impedance to high frequencies connection.
Use the clamps supplied with the product, making sure there is a good contact between the shield and
that clamp.
Keep the separation distance to the other cables according to the
Refer to the
Maximum motor cable length and conduced and radiated emission levels according to the
on page
If a lower conducted emission level category is 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 V VW control modes when using a sinusoidal output filter:
Adjust the switching frequency in 5 or 10 kHz (P0297 = 2 or 3) and the parameter P0350 in 2 or 3
(not allowing the automatic reduction of the switching frequency to 2.5 kHz). Refer to
8-3 to
(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
the emission levels for each configuration are also presented. Keep the separation from the other cables
according to the
more information. The filters presented in
the inverter at 5 kHz switching frequency and rated output current as shown in
and Table 8.3 on page
for it. In order to optimize them for use with the inverter at 10 kHz, refer to the
and Table 8.5 on page
3-40 | CFW-11
(XE1). Refer to
Item 3.2.3 Power Connections on page
3-21.
Table 3.15 on page
Table 8.5 on page 8-4 for output current specification for 5 kHz and 10 kHz. Output cables
Table 3.8 on page
8-3. Those filters can also be used for 10 kHz, however they are not optimized
8-4.
Item 3.2.3.2.1 IT Networks on page
3-16, for more information.
3-42.
Table 3.16 on page 3-43. The maximum motor cable length and
3-29. Refer to the Item 3.2.3 Power Connections on page 3-16
Table 3.16 on page 3-43
3-17.
Table 3.6 on page 3-23 indication.
Figure 3.15
Table 8.2 on page
were defined for the operation of
Table 8.2 on page 8-3
Table 8.4 on page 8-4
for