ACS 300 User’s Manual 11
Chapter 2 - Mechanical Installation
Cooling Cooling of the ACS 300 is based on natural air circulation or
by fan, depending on the type.
The maximum allowable ambient operating temperature is
50°C when the load current is lower than or equal to the con-
tinuous maximum load current I
N
and switching frequency is
lower than or equal to 8 kHz (3 kHz for model ACS 3_1-016-
3). See Figure 2-1 below for power derating curves.
The cooling air must be clean and free from corrosive materi-
als. If the cooling air contains dust, clean the cooling surfaces
of the unit regularly using compressed air and a brush.
ACS 300 AC drives are to be used in a heated, indoor, con-
trolled environment that is free of moisture and conductive
contaminates such as condensation, carbon dust and the like.
Figure 2-1 Power derating curves by switching frequency.
1P6-3 - 012-3
016-3
16
2
468
10
12
14
0
0.2
0.4
0.6
0.8
1.0
P
OUT
/P
N
f [kHz]
ACS 3_1-1P6-3 to 016-3
(400 V series)
ACS 3_1-1P1-1 to 4P1-1
162 4 6 8 10 12 14
0
0.2
0.4
0.6
0.8
1.0
P
OUT
/P
N
f [kHz]
1P1-1, 2P1-1
1P6-1, 4P1-1
(200 V series)
2P7-1
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