Fagor DDS AXD/SPD 2.75 - Page 148

Drives
3.
180
Ref.1912
DDS
HARDWARE
· 148 ·
Drive for a synchronous|asynchronous motor working as a spindle
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 drives 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. H3/96
Current derating on ·ACD|CMC 2.50· drives for fc = 8 kHz.
F. H3/97
Current derating on ·SCD 1.15· drives for fc = 4 kHz.
F. H3/98
Current derating on ·SCD 1.25· drives for fc = 4 kHz.
F. H3/99
Current derating on ·SCD 2.35· drives for fc = 4 kHz.
35 40 55 60
18
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
17
19
In
20
ACD|CMC 2.50
T ambient In
° C ° F A
35 95 20.0
40 104 20.0
45 113 20.0
50 122 19.1
55 131 17.8
60 140 16.4
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
T ambient Imax.
° C ° F A
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
T ambient Imax.
° C ° F A
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 1.25
T ambient Imax.
° C ° F A
35 95 28.0
40 104 28.0
45 113 28.0
50 122 27.2
55 131 24.5
60 140 22.7