WEG ECW500 - Page 38

Installation and Connection .
30 | ECW500
For the correct installation of the control wiring, use:
■ cables from 0.5 mm
2
(20 AWG) to 1.5 mm
2
(14 AWG);
■ maximum torque of 0.5 N.m (4.50 lbf.in);
■ shielded cables separate from the other wiring (power, control in 110Vac/220Vac, etc.) according to Table
5.3. If the crossing of those cables cannot be avoided, it must be done perpendicularly between them,
keeping the minimum separation distance of 5 cm at the crossing point.
The shield connection of the cables must also observe the form presented in Figure 5.7.
Table 5.3 Separation distances between control wiring and other wiring
Wiring Length
Minimum Separation
Distance
 30 m
10 cm
> 30 m
25 cm
Figure 5.7 Correct form of connection of the control cable shield
NOTE!
Relays, contactors, solenoids or coils of electromechanical brakes installed close to the converter
may occasionally generate interference in the control circuit. In order to eliminate this effect, RC
suppressors must be connected in parallel to the coils of those devices (in case of DC power
supply, make the connection in parallel with the freewheel diodes).