Moeller DF51 - Mounting the DF51; EMC Compliance; EMC-Compliant Installation; Fitting a Radio-Interference (RFI) Filter

10/05 AWB8230-1541GB
EMC compliance
29
Mounting the DF51
Mount the DF51 frequency inverter as shown in Fig.23 and tighten
the screws to the following torque values (a table 3):
Table 3: Tightening torques of the mounting screws
EMC compliance
EMC-compliant installation
We recommend the following measures for EMC compliant
installation:
• Installation of the frequency inverter in a metallic, electrically
conducting enclosure with a good connection to earth.
• Installation of a radio interference filter on the input of and
immediately adjacent to the frequency inverter.
• Screened motor cables (short cable lengths).
X Earth all conductive components and the enclosure using as
short a cable as possible.
Fitting a radio-interference (RFI) filter
The RFI filter should be installed immediately adjacent to the
frequency inverter. The connection cable between the frequency
inverter and filter should be as short as possible. Screened cables
are required if the length exceeds 30 cm.
The mounting surfaces for the frequency inverter and radio
interference filter should be as free as possible from paint and oil
residue.
The assigned DE51-LZ... radio interference filters (a section “RFI
filters” in the appendix, page 208) can be mounted under
(footprint) or next to (book-type) the DF51 frequency inverter.
Figure 23: Mounting the DF51
o
A
RUN
PRG
Hz
PRG
ENTER
IO
POWER
ALARM
o
[mm]
Nm ft lbs
5 M4 3 2.6
Figure 24: Footprint mounting
A
R
U
N
P
R
G
H
z
P
R
G
EN
T
E
R
IO
POW
ER
ALARM