Drive modules
188
3.
DRIVE MODULES
Compact drives
152
DDS
HARDWARE
Ref.1310
Drives for a synchronous or asynchronous motor working as a spind-
le
The following graphs show the maximum rms current in continuous duty
cycle (that is, the rated one) depending on the switching frequency of the
power transistors that the drive modules for asynchronous motors can
supply in a temperature range between 5 °C (41 °F) and 60 °C (140 °F).
For a switching frequency fc = 4 kHz
F. H3/98
Current derating on “SCD 1.15” drives for fc = 4 kHz.
F. H3/99
Current derating on “SCD 1.25” drives for fc = 4 kHz.
F. H3/100
Current derating on “SCD 2.35” drives for fc = 4 kHz.
F. H3/101
Current derating on “SCD 2.50” drives for fc = 4 kHz.
35 40 55 60
9
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
8
10
Imax
11
SCD 1.15
Tª ambient Imax.
°C °F Arms
35 95 10.6
40 104 10.6
45 113 10.6
50 122 9.9
55 131 9.1
60 140 8.2
35 40 55 60
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
15
Imax
16
17
18
SCD 1.25
Tª ambient Imax.
°C °F Arms
35 95
17.5
40 104
17.5
45 113
17.5
50 122
16.8
55 131
15.9
60 140
14.9
35 40 55 60
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
22
Imax
24
26
28
SCD 2.35
Tª ambient Imax.
°C °F Arms
35 95
28.0
40 104
28.0
45 113
28.0
50 122
27.2
55 131
24.5
60 140
22.7
35 40 55 60
20
40
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
10
30
Imax
SCD 2.50
Tª ambient Imax.
°C °F Arms
35 95
38.0
40 104
38.0
45 113
38.0
50 122
36.3
55 131
34.3
60 140
32.2