Grounding Conductor Connection And Rcd-Compatibility; System Requirements With Regard To Emc-Stability; General Information About Converters - Baumuller BFN 3-1-0007-001 Instruction Handbook Manual

7.4

Grounding conductor connection and RCD-compatibility

7.4 Grounding conductor connection and RCD-compatibility
Due to the operating principle discharge current >3.5 mA
the protective devices Therefore a stationary grounding conductor connection according
to EN 61800-5-1 is required (see notes for the installation in the Instruction Handbook of
the converter).
Parasitic capacitances in the filter, power unit, motor cable and motor winding cause dis-
charge current of 100 mA and greater.
Therefore power converter can be incompatible with the RCD!
Observe the safety notes in the EN 50178/VDE 0160/4.98, part 5.2.11.2.
7.5

System requirements with regard to EMC-stability

NOTE!
The emission of radio interferences is highly dependent of the wiring, the spatial ex-
pansion and the assignment of the components in the system. Therefore the electro-
magnetic compatibility compliant to the regulations can be assured at the assembled
system only. Therefore the system manufacturer or the operator is responsible for as-
suring EMC (EMVG §6, chapter 9).
7.5.1

General information about converters

In converters of the Baumüller Nürnberg GmbH semiconductors are used. These can
minimize power loss by quick switching. Therefore a compact size of the devices is pos-
sible. The semiconductor generates electromagnetic waves due to this quick switching.
Special preconditions must be observed to avoid electromagnetic influences by switching
procedures.
The following causes are the reason for interferences in the drive system:
m Capacitive discharge currents. Here is a great rate of rise of voltages when switching
m Great currents and rate of rise of voltages in the motor cables. The interference energy
m Great cycle rates and quick logic circuits (electromagnetic field with frequencies of
m System perturbation and harmonics. Here commutation procedures and non sinusoi-
EMC is decisively dependent of the assembly of the individual parts and components in
the control cabinet. The system can be configured compliant to the latest EMC-knowl-
edge described in the following. This way the statutory regulations can be complied with.
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Instruction handbook Mains filters BFN
Document No.: 5.09010.03
of 70
semiconductors.
which is bounded into magnetic fields reaches frequencies of a few hertz to about
30 MHz. Due to the great rate of rise of voltages additional electromagnetic fields with
frequencies to about 600 MHz occur.
16 MHz to 1 GHz).
dal mains loads occur. This particularly occurs at line-commutated converters (100 Hz
to 20 kHz).
or >10 mA can flow over
AC DC
Baumüller Nürnberg GmbH