KFU 2-/4-
31
4 Mechanical
Installation
The frequency inverters of degree of protection IP20 are designed, as a standard, for
installation in electrical cabinets.
During installation, both the installation and the safety instructions as well as the
device specifications must be complied with.
Warning!
To avoid serious physical injuries or major material damage, only quali-
fied persons are allowed to work on the devices.
Warning!
During assembly, make sure that no foreign particles (e.g. chips, dust,
wires, screws, tools) can get inside the frequency inverter. Otherwise
there is the risk of short circuits and fire.
The frequency inverters comply with protection class IP20 only if the cov-
ers and terminals are mounted properly.
Overhead Installation or installation in horizontal position is not permissi-
ble.
4.1
KFU 2- (up to 3.0 kW) and 401 (up to 4.0 KW)
The frequency inverter is mounted in a vertical position on the assembly panel by
means of the standard fittings.
The following illustration shows the different mounting possibilities.
Standard installation
b
b1
a1
a
a2
c
c1
x
x
x 100
mm
b1
Assembly is affected by inserting the long side of the fixing plate in the heat sink and
screwing it to the mounting plate.
The dimensions of the device and the installation dimensions are those of the standard
device without optional components and are given in millimeters.
Dimensions [mm]
Installation dimensions [mm]
KFU
a b c a1 a2 b1 c1
0.25 kW ... 1.1 kW
190
60
178 210 ... 230 260
30
133
2-
1.5 kW ... 3.0 kW
250
60
178 270 ... 290 315
30
133
0.25 kW ... 1.5 kW
190
60
178 210 ... 230 260
30
133
4-
1.85 kW ... 4.0 kW
250
60
178 270 ... 290 315
30
133
Caution!
Mount the devices with sufficient clearance to other components so that the
cooling air can circulate freely. Avoid soiling by grease and air pollution by
dust, aggressive gases, etc.
