Power cabling
vacon • 22
4
4.
P
OWER
CABLING
The mains cables are connected to terminals L1, L2 and L3 and the motor cables to terminals
marked with U, V and W. See principal connection diagram in Figure 13. See also Table for the
cable recommendations for different EMC levels.
Figure 13. Principal connection diagram(* only MU3).
Use cables with heat resistance in accordance with the application requirements. The cables
and the fuses must be dimensioned according to the AC drive nominal OUTPUT current which
you can find on the rating plate.
1 = Power cable intended for fixed installation and the specific mains voltage. Shielded
cable not required. (MCMK or similar recommended).
2 = Symmetrical power cable equipped with concentric protection wire and intended for the
specific mains voltage. (MCMK or similar recommended). See Figure 14.
3 = Symmetrical power cable equipped with compact low-impedance shield and intended
for the specific mains voltage. [MCCMK, EMCMK or similar recommended; Recom-
mended cable transfer impedance (1...30MHz) max. 100mohm/m]. See Figure 14.
*360º earthing of the shield with cable glands in motor end needed for EMC category
C2.
4 = Screened cable equipped with compact low-impedance shield (JAMAK, SAB/ÖZCuY-O
or similar).
EMC levels
Cable type
1
st
environment
2
nd
environment
Category C2
Category C3
Category C4
Mains cable
1
1
1
Motor cable
3*
2
2
Control cable
4
4
4
Table 6: Cable types required to meet standards.
U/T1
V/T2
W/T3
M
L1
L2
L3
DC
+
R-
DC-
(*
)
Keypad
Control
Power unit
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
