Switching Frequency Derating - ABB ACS380 Hardware Manual

134 Technical data
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Switching frequency derating

Derating the drive output current is necessary when using high minimum switching
frequencies. If you change parameter 97.02 Minimum switching frequency, calculate
the derated current. Multiply the drive output current with the applicable derating factor
from the table.
Derating is not necessary when changing parameter 97.01 Switching frequency
reference.
Frame R4: If the application is cyclic and the surrounding air temperature is constantly
more than 40 °C (104 °F), keep parameter 97.02 Minimum switching frequency at its
default value (1.5 kHz). Higher switching frequencies decrease the product life time or
the performance in the temperature range 40 ... 60°C (104 ... 140 °F).
Type
ACS380-
04xx-...
1-phase U N = 230 V
02A4-1
03A7-1
04A8-1
06A9-1
07A8-1
09A8-1
12A2-1
3-phase U N = 230 V
02A4-2
03A7-2
04A8-2
06A9-2
07A8-2
09A8-2
12A2-2
17A5-2
25A0-2
032A-2
048A-2
055A-2
3-phase U N = 400 V or 480 V
01A8-4
02A6-4
03A3-4
04A0-4
< 4 kHz
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Derating factor
8 kHz
0.80
0.80
0.81
0.81
0.85
0.85
0.82
0.84
0.84
0.84
0.84
0.83
0.83
0.76
0.76
0.75
0.75
0.74
0.74
0.65
0.65
0.65
0.65
12 kHz
0.66
0.66
0.68
0.68
0.74
0.74
0.69
0.73
0.73
0.73
0.73
0.70
0.70
0.61
0.61
0.60
0.59
0.60
0.60
0.48
0.48
0.48
0.48