1
vacon • 9
Safety
1.6
Extended temperature range
VACON
®
20 X has
an integrated cooling system
, independent from the motor fan. Under max-
imum operating conditions, the ambient temperature cannot exceed
40 °C
. See Table 19 for
the output rated current. Higher temperatures are allowed only with derating of the output
current. With derating the unit can
operate up to 50°C
.
Figure 3.Temperature-output current derating curve.
The AC drive is cooled down by air-ventilation. Therefore, make sure that enough free space is
left around the AC drive to ensure sufficient air circulation (see for more details the mounting
instructions on chapter 3).
Ambient temperature (°C)
P
e
rc
en
t
rat
e
d
ou
tput c
u
rr
e
n
t (
%
I
N
)
10
20
30
40
50
100
75
50
25
0
-10
150
60
Temperature - Output Current Derating Curve
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