INSTALLATION AND CONNECTION
Insulate with tape
Inverter
side
Do not ground
Figure 3.4:
Shielding 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 freewhel 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 6 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
≤
100m (330 ft)
≥
10 cm (3
.
94 in)
>
100 m (330 ft)
≥
25 cm (9
.
84 in)
3.3 INSTALLATIONS
ACCORDING
TO
EUROPEAN
DIRECTIVE
OF
ELECTROMAGNETIC COMPATIBILITY
The CFW320 inverters feature external RFI filter to reduce electromagnetic interference (refer to
).
Those inverters, when properly installed, meet the requirements of the
electromagnetic compatibility (EMC) directive (2014/30/EU).
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.
3.3.1 Control Connections
1. Shielded output cables (motor cables) with the shield connected at both ends, motor and inverter, with
low-impedance connection or high frequency. Maximum motor cable length and conducted and radiated
emission levels according to
2. Shielded control cables, and keep them away from other cables according to
.
3. Grounding of the inverter according to instructions of
Item 3.2.4 Grounding Connections on page 20
4. Grounded power supply.
5. Use short wiring to ground the external filter or inverter.
6. Ground the mounting plate using a flexible braid as short as possible. Flat conductors have lower impedance
at high frequencies.
22 | CFW320
