Fagor DDS AXD/SPD 2.75 - Page 146

Drives
3.
180
Ref.1912
DDS
HARDWARE
· 146 ·
Derating depending on ambient temperature
Drive for an synchronous motor working as an axis
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 synchronous motors can supply in a
temperature range between 5°C/41°F and 60°C/140°F.
 For a switching frequency fc = 4 kHz
NOTE. They can supply twice as much current for a maximum or 0.5 s,
and always in cycles longer than 10 s.
F. H3/87
Current derating on ·ACD|CMC 1.08· drives for fc = 4 kHz.
F. H3/88
Current derating on ·ACD|CMC 1.15· drives for fc = 4 kHz.
F. H3/89
Current derating on ·ACD|CMC 1.25· drives for fc = 4 kHz.
F. H3/90
Current derating on ·ACD|CMC 2.35· drives for fc = 4 kHz.
35 40 55 60
4
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
0
2
6
In
ACD|CMC 1.08
T ambient In
° C ° F A
35 95 4.0
40 104 4.0
45 113 4.0
50 122 3.5
55 131 2.8
60 140 2.1
35 40 55 60
6
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
5
7
8
In
ACD|CMC 1.15
T ambient In
° C ° F A
35 95 7.5
40 104 7.5
45 113 7.5
50 122 7.0
55 131 6.3
60 140 5.5
35 40 55 60
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
10
In
11
12
13
ACD|CMC 1.25
T ambient In
° C ° F A
35 95 12.5
40 104 12.5
45 113 12.5
50 122 11.9
55 131 11.2
60 140 10.5
35 40 55 60
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
12
In
14
16
18
ACD|CMC 2.35
T ambient In
° C ° F A
35 95 17.5
40 104 17.5
45 113 17.5
50 122 16.3
55 131 14.7
60 140 13.2