18
Unidrive Regen Installation Guide
www.controltechniques.com
Issue Number: 2
If it is necessary to use a cable longer than 5m, a screened cable should be used with the screen grounded as shown in Figure 6-1.
6.4.3
Motor connection
C is the AC cable length between the motoring drive and the motor.
Figure 6-1
Calculating the cable length of the Regen system
6.4.4
Maximum cable length
The sum total length of the DC bus and motor cables (B and C in Figure 6-1) must not exceed the values shown in the table below:
Table 6-3
Cable lengths
If the cable length in the above table is exceeded, additional components are required. Refer to Appendix C Long cables on page 41.
Regen drive size
Power rating
Maximum cable length
kW
m
1
4
50
2
5.5 - 11
100
3
15 - 37
200
4
45 - 110
200
5
132
200 per Regen drive
L1
L2
L3
W
V
U
-DC
+DC
Regen
Drive
L1
L2
L3
W
V
U
-DC
+DC
Motoring
Drive
R B Y
E
Motor
E
E
E
E
E
Regen
Inductor
B
A
C
E
E