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4.10.2 Inverter connection
Following, it is reported an example how to con-
nect the Inverter.
For further information, please refer to the relevant
Inverter instruction manual.
WARNING
Typical installation
L1 L2/N
PE
PE
Line
FILTER
Load
Cable length
as short as possible
Ground bonds
(remove any paint)
METAL PLATE
Installation
Ground bonds
(remove any paint)
INVERTER
PE L1 L2
U
VWPE
S8203
Motor cable
screened
M
3~
Fig. 27
27
Treatment of cables
Countermeasures against cable noise
The treatment of cables is the most important countermeasure.
The machinery manufacturers are requested
to examine the current structure of the cable lead - in.
Use cables with woven screen
The screen of the cable should be earthed with a large area.
It is desirable to earth the screen of the cable by clamping the
cable to the earth plate.
The screen must be earthed on both side of the cable (take
care for good earthing system).
S8201
Ground clamp
Example: number 1,2,3 show not proper ways to earth a cable
screen.
S8202
GB
Ground bonds
(remove any paint)
Grounding plate
Fig. 29
20044771
Fig. 28
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