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4.10
Electromagnetic compatibility
4.10.1
Electromagnetic compatibility
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.
• It is crucial that you comply with the EMC notes provided by the converter manufacturer.
• 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.
4.10.2
EMC and interference immunity
When used in accordance with their intended purpose, the enclosed machines comply with the
requirements of the current 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).
4.11
Converter operation
1FU9 motors are operated on the converter in the SYNCHRONOUS U/f operating mode.
1FU9
Operating Instructions, 07/2020, A5E46712792A
Preparing for use
4.11 Converter operation
35
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