54
Digitax HD M75X Series Installation and Technical Guide
Issue Number: 5
4.5 Low voltage operation
The drive is able to operate from a low voltage DC supply with a range from 24 Vdc to the maximum DC volts.
It is possible for the drive to go from
operating on a normal line power supply voltage to operating on a much lower supply voltage without interruption.
Going from low voltage operation to normal mains operation requires the inrush current to be controlled. This may be provided externally. If not, the
drive supply can be interrupted to utilise the normal soft starting method in the drive.
To fully exploit the new low voltage mode of operation, the under voltage trip level is now user programmable. For application data, contact the
supplier of the drive.
The working voltage range of the low voltage DC power supply is as follows:
Minimum continuous operating voltage: 26 V
Minimum start up voltage:
32 V
Maximum over voltage trip threshold:
230 V drives: 415 V
400 V drives: 830 V
4.6 Ratings
Table 4-6 Fuse ratings and cable sizes for single axis
*
These are fast acting fuses.
For multi-axis fuse and cable data refer to Section 5
.
PVC insulated cable should be used.
Cable sizes are from IEC60364-5-52:2001 table A.52.C with correction factor for 40 °C ambient of 0.87 (from table A52.14) for cable installation
method B2 (multicore cable in conduit).
Cable size may be reduced if a different installation method is used, or if the ambient temperature is lower.
The recommended cable sizes above are only a guide. The mounting and grouping of cables affects their current-carrying capacity, in some cases
smaller cables may be acceptable but in other cases a larger cable is required to avoid excessive temperature or voltage drop. Refer to local wiring
regulations for the correct size of cables.
Fuses
The AC supply to the drive must be installed with suitable protection against overload and short-circuits. The following section shows
recommended fuse ratings. Failure to observe this requirement will cause risk of fire.
Model
No of input
phases
Typical input
current
(for single axis)
Fuse ratings
(for single axis)
Cable size
(for single axis)
Input
Output
A
IEC gG
UL Class
CC, J or T*
mm²
AWG
mm²
AWG
01200022
1
3.7
8
15
0.75
14
0.75
24
01200040
1
6.9
12
15
1.5
14
0.75
22
01200065
1
11.4
16
15
2.5
12
0.75
20
02200090
1
17.7
25
25
4.0
10
0.75
16
02200120
1
23.0
32
30
6.0
10
0.75
16
03200160
1
31.5
32
40
6.0
8
1.5
14
01200022
3
5.8
8
15
0.75
14
0.75
20
01200040
3
7.9
12
15
1.5
14
0.75
18
01200065
3
10.5
16
15
2.5
14
0.75
16
02200090
3
16.7
25
25
4.0
10
1.0
14
02200120
3
20.3
32
30
6.0
10
1.5
12
03200160
3
27.9
32
40
6.0
8
2.5
12
01400015
3
3.1
6
15
0.75
14
0.75
20
01400030
3
4.8
8
15
0.75
14
0.75
20
01400042
3
5.3
8
15
0.75
14
0.75
18
02400060
3
10.1
16
25
2.5
14
0.75
16
02400080
3
12.1
16
25
2.5
12
0.75
14
02400105
3
14.9
20
25
4.0
12
1.5
14
03400135
3
20.8
32
30
6.0
10
2.5
12
03400160
3
22.0
32
30
6.0
10
2.5
12
WARNING
NOTE
NOTE
Summary of Contents for Digitax HD M75 Series
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