
3 Installation
3.3 Assembly
DB1 variable frequency drive
11/20 MN040031EN
Eaton.com
57
3.3.3 Mounting
DB1 variable frequency drives are fastened to the cooling surface using three
screws.
Figure 30: Mounting dimensions
Table 10: Installation dimensions, screws, tightening torques
→
It is essential to apply the correct tightening torque to the fixing
screws, as this ensures optimum heat transfer between the
variable frequency drive cooling surface and the external cooling
system.
Frame size
a1
b1
Screw
Tightening torque
FS
mm
in
mm
in
Numbe
r
Size
Nm
lb-in
FS1, FS1B
95
3.74
99
3.90
3
M4x20
4
35.4
FS1C
107.5
4.23
158
6.22
3
M4x20
4
35.4
FS2
125
4.92
189
6.26
3
M4x20
4
35.4
b1
a1
b1
2
b1
2
⌀ 5 mm
(⌀ 0.2")