Standard user guide
V51-00-V19 eng
-22- Rights to changes reserved
2.12 Emissions and immunity
SPEED-COMMANDER inverters are referring to EMC-directives 89/336/EWG
tested after test standards
EN 50081-1 (Emission) and EN 50082-2 (immunity)
And keep these when the installation guide is followed.
EMC correct installation:
The Speed Commander, the noise filter on the mains and the shield on the motor and control cable, must
be installed in a conduction unpainted assembly board. The cable shields must be clamped to the
assembly board.
The noise filter on the mains supply has to be installed as close as possible to the Speed Commander, the
max distance being 25cm. If the distance between the filter and the speed commander is higher, a shielded
cable must be used. The shielded control cable must be connected only to the frequency inverter. The
shield on the motor cable has to be connected both to the inverter and the motor cap. The motor cable
should be as short as possible, the max. Recommended length being 15 meters.
The shield on the cables must have as low a HF resistance as possible, and the shield must not be broken
or disconnected from the motor.
HF resistance in the connection point must be as low as possible, and therefore the shield must be
connected with clamps or a metal screw cap. The connection point has to be as close to the Speed
Commanders power terminals as possible. Passage terminals should be avoided. The control and mains
supply cable must be kept apart from the motor cable. The distance in between should be at least 20cm. If
the motor cable crosses other cable, it should happen at a 90-degree angel.
.
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