TREND NX Variable Speed Drives - Manual (Page 52)

INSTALLATION vacon • 35
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5
C
A
NK5_2
A
2
A
2
D
B
A
B
5.2 Cooling
Enough free space shall be left around the frequency converter to ensure sufficient air circulation, cooling
as well as maintenance. You will find the required dimensions for free space in the tables below.
If several units are mounted above each other the required free space equals C + D (see figure below).
Moreover, the outlet air used for cooling by the lower unit must be directed away from the air intake of the
upper unit.
The amount of cooling air required is indicated below. Also make sure that the temperature of the cooling
air does not exceed the maximum ambient temperature of the converter.
5.2.1 FR4 to FR9
Type Dimensions [mm]
A A
2
B C D
0004—0012 NX_2
0003—0012 NX_5
20 20 100 50
0017—0031 NX_2
0016—0031 NX_5
20 20 120 60
0048—0061 NX_2
0038—0061 NX_5
0004—0034 NX_6
30 20 160 80
0075—0114 NX_2
0072—0105 NX_5
0041—0052 NX_6
80 80 300 100
0140—0205 NX_2
0140—0205 NX_5
0062—0100 NX_6
80 150 80 300 200
0261—0300 NX_2
0261—0300 NX_5
0125—0208 NX_6
50 80 400 250
(350**)
0385—1030 NX_5
0261—0820 NX_6
30
Table 5-10. Mounting space dimensions
Figure 5-11. Installation space
A = clearance around the freq. converter (see also A
2
and B)
A
2
= clearance needed on either side of the frequency converter
for fan change (without disconneting the motor cables)
** = min. clearance for fan change
B
= distance from one frequency converter to another or
distance to cabinet wall
C = free space above the frequency converter
D = free space underneath the frequency converter