WEG CFW300 User Manual - page 23
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Installation and Connection
For the correct connection of the control, use:
1. Gauge of the cables: 0.5 mm² (20 AWG) to 1.5 mm² (14 AWG).
2. Maximum torque: 0.5 N.m (4.50 lbf.in).
3. Wiring of the connector of the control board with shielded cable and separated from the
other wiring (power, command in 110 V / 220 Vac, etc.), according to
Separation Distance on page 18
. If those cables must cross other cables, it must be done
in perpendicularly among them, keeping the minimum separation distance of 5 cm at the
crossing point. Connect the shield according to the figure below:
Do not ground
Insulate with tape
Inverter
side
Figure 3.4: Shield connection
4. Relays, contactors, solenoids or coils of electromechanical brake 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 HMI (refer to
Chapter 7 ACCESSORIES on page 30
), the cable
that connects to the inverter must be separated from the other cables in the installation,
keeping a minimum distance of 10 cm (3.95 in).
3.2.6 Cable Separation Distance
Provide separation between the control and the power cables according to
Table 3.2: Separation distance between cables
Output Rated
Current of the
Inverter
Cable Length
Minimum
Separation
Distance
≤ 24 A
≤ 100 m (330 ft)
> 100 m (330 ft)
≥ 10 cm (3.95 in)
≥ 25 cm (9.85 in)
3.3 INSTALL ATIONS ACCORDING TO EUROPEAN DIRECTIVE OF
ELECTROMAGNETIC COMPATIBILITY
The CFW300 inverters feature external RFI filter to reduce electromagnetic interference (refer
to
Chapter 7 ACCESSORIES on page 30
). Those inverters, when properly installed, meet
the requirements of the directive of electromagnetic compatibility.
These inverters were developed for professional applications only. Therefore, the limits for
emission of harmonic currents established by the EN 61000-3-2 and EN 61000-3-2/A 14
standards are not applicable.