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Preparing for use
4.11 Electromagnetic compatibility
4.11
Electromagnetic compatibility
Note
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.
Note
Converter
• 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 proper and intended purpose and operated on an electrical
supply system 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).
38
1PC1423 roller-table motors SH 112 ... 400
Operating Instructions
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