WEG CFW-11 User Manual page 44

Table 3.7 - Minimum separation distances between wiring
4) The adequate connection of the cable shield is shown in figure 3.20. Figure 3.21 shows how to connect
the cable shield to the ground.
Inverter
side
Figure 3.21 - Example of shield connection for the control wiring
5) Relays, contactors, solenoids or coils of electromechanical brakes installed close to the inverter may eventually
create interferences in the control circuitry. To eliminate this effect, RC suppressors (with AC power supply)
or free-wheel diodes (with DC power supply) shall be connected in parallel to the coils of these devices.
Minimum Separation
Cable Length
≤ 30 m (100 ft) ≥ 10 cm (3.94 in)
> 30 m (100 ft) ≥ 25 cm (9.84 in)
Figure 3.20 - Shield connection
Installation and Connection
Distance
Isolate with tape
Do not ground
3
3-25