Control Techniques Unidrive Servo Series Product Data page 22

drive installation
Motor cable
Since capacitance in the motor cable causes loading
on the output of the Drive, ensure the cable length
does not exceed the values given in Table 2-3.
Nominal AC 400V
supply
voltage
Model
Maximum cable length*
(PWM switching frequency at 3kHz)
m
UNI1401 65
UNI1402 100
UNI1403 130
UNI1404 200
UNI1405 300
UNI2401- 300
UNI2403
UNI3401- 200
UNI3405
UNI4401- 200
UNI4405
* Cable lengths in excess of the specified values may be used only when
special techniques are adopted; refer to the supplier of the Drive.
The maximum cable length is reduced from that
shown in the table under the following conditions:
PWM switching frequency exceeding 3kHz in
model sizes 3 and 4
The maximum cable length is reduced in
proportion to the increase in PWM switching
frequency, eg. at 9kHz, the maximum length is
1/ 3 of that shown.
High capacitance cables
Most cables have an insulating jacket between
the cores and the armour or shield; these cables
have a low capacitance and are recommended.
Cables that do not have an insulating jacket
tend to have high capacitance; if a cable of this
type is used, the maximum cable length is half
that quoted in the table. (figure 2-1 shows
shows how to identify the two types.)
22
480V
ft m ft
210 50 160
330 75 250
430 100 330
660 150 490
990 250 820
990 300 990
660 120 410
660 120 410
Normal capacitance
Shield or armour
separated from the cores
Cable & Fuse Recommendations
FUSES and CABLES
AC Supply
CATALOGUE
Cables
NUMBER
mm2 AWG
UNI1401 1.5 16
UNI1402 2.5 14
UNI1403 2.5 14
UNI1404 2.5 14
UNI1405 2.5 14
UNI2401 2.5 14
UNI2402 4.0 10
UNI2403 4.0 10
UNI3401 6 8
UNI3402 10 6
UNI3403 10 6
UNI3404 16 4
UNI3405 25 4
UNI4401 35 2
UNI4402 35 2
UNI4403 50 2/0
UNI4404 70 2/0
UNI4405 95 3/0
UNI5401 95 3/0
Use Fuse class RK1 or similar HRC fuse.
Weights
Model size
1
2
3
4
* 5 102
High capacitance
Shield or armour
close to the cores
Motor Fuse
Cables Rating
mm2 AWG Amps
1.5 16 6
2.5 14 10
2.5 14 10
2.5 14 10
2.5 14 16
2.5 14 16
4.0 10 35
4.0 10 20
6 8 40
10 6 50
10 6 60
16 4 70
25 4 80
35 2 100
35 2 125
50 2/0 160
70 2/0 200
95 3/0 250
95 3/0 450
kg lb
4 8.8
8 17
22 49
70 154
224
*Power Module only