Preparations for use
4.13 Electromagnetic compatibility
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 07/2020, A5E41926185A
45
4.13 Electromagnetic compatibility
If the torque levels are very unequal (e.g. when a reciprocating compressor is being driven), a
non
-sinusoidal machine current will be induced whose harmonics can have an impermissible
effect on the supply system and cause impermissible interference emissions as a result.
If operated with a frequency converter, the emitted interference varies in strength,
depending on the design of the converter (type, interference suppression measures,
manufacturer).
Avoid that the specified limit values stipulated for the drive system (consisting of the
motor and converter) are exceeded.
You must observe the EMC information from the manufacturer of the converter.
The most effective method of shielding is to conductively connect a shielded machine
supply cable to the metal terminal box of the machine (with a metal screw connection)
over a large surface area.
On machines with integrated sensors (e.g. PTC thermistors), disturbance voltages caused
by the converter may occur on the sensor cable.
When used in accordance with their intended purpose, and operated on a line supply with
characteristics according to EN 50160, the enclosed machines comply with the requirements
of the EC Directive regarding electromagnetic compatibility.
Immunity to interference
The machines fulfill the requirements of interference immunity in conformity with EN /
IEC 61000-6-2. For machines with integrated sensors, e.g. PTC thermistors, the operating
company must ensure sufficient interference immunity by selecting a suitable sensor signal
cable (possibly with shielding, connected in the same way as the machine feeder cable) and a
suitable evaluation unit.
When operating the machines from a converter at speeds higher than the rated speed,
carefully comply with the mechanical speed limits (safe operating speed EN / IEC 60034-1).
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