Cable Separation Distance; Installations According To European Directive Of Electromagnetic Compatibility; Conformal Installation - WEG MW500 User Manual

4. Relays, contactors, solenoids or coils of electromechanical brakes installed close to the
inverters may occasionally generate interference in the control circuitry. To eliminate this
effect, RC suppressors (with AC power supply) or freewheel diodes (with DC power supply)
must be connected in parallel to the coils of these devices.
5. When using the external HMIR (refer to
that connects to the inverter must be separated from the other cables in the installation,
keeping a minimum distance of 10 cm (3.94 in).
6. When using analog reference (AI1) and the frequency oscillates (problem of electromagnetic
interference), interconnect the GND of the connector of the plug-in module to the inverter
grounding connection.

3.2.7 Cable Separation Distance

Provide separation between the control and power cables and between the control cables (relay
output cables and other control cables) as per
Inverter Rated Output Current
≤ 24 A
3.3 I N S TA LL ATI O N S ACCO R D I N G TO E U RO PE A N D I R ECTI V E O F
ELECTROMAGNETIC COMPATIBILITY
Inverters with option C2 or C3 (MW500...C2...) feature internal RFI filter in order to reduce the
electromagnetic interference. Those inverters, when properly installed, meet the requirements
of the directive of electromagnetic compatibility (2014/30/EU).
The MW500 inverter series was developed for professional applications only. Therefore, the
emission limits of harmonic currents by the standards EN 61000-3-2 and EN 61000-3-2/A 14
are not applicable.

3.3.1 Conformal Installation

1. Inverter with optional internal RFI filter MW500...C2... (with grounding switch of the capacitors
of the internal RFI filter in the position ON). Check the installation of the grounding screw in
Figure A.2 on page 123.
2. Shielded output cables (motor cables) with the shield connected at both ends, motor and
inverters, by means of low impedance for high frequency connection.
Maximum motor cable length and conducted and radiated emission levels according to
on page 129. If a lower conducted emission level and/or a longer motor cable is desired, 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
3. Shielded control cables, keeping the separations distance from other cables according to
Table 3.2 on page 17.
4. Grounding of the inverter according to instructions of
page 14.
5. Grounded power supply.
Section 7.2 ACCESSORIES on page
Table 3.2 on page
Table 3.2: Cable separation distance
Cable Length (s)
≤ 100 m (330 ft)
> 100 m (330 ft)
Installation and Connection
17.
Minimum Separation Distance
≥ 10 cm (3.94 in)
≥ 25 cm (9.84 in)
Table B.3 on page
Item 3.2.4 Grounding Connections on
33), the cable
Table B.3
129.
MW500 | 17