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11.8.3
Operation in the First EMC environment
11.8.3.1
General information
Overview
Devices and systems that are operated on the public low-voltage system must comply with the
limit values for electromagnetic interference (interference immunity and interference emission)
defined in the relevant standards. Industrial networks are facing increased requirements,
particularly regarding emitted interference. The requirements for standard-conformant
operation on the public low-voltage system are explained in more detail in the following.
Note
Requirements may be defined in the technical connection conditions of the local network
operator that exceed the standard requirements described in this document.
Note
The flicker behavior can only be evaluated in a combination of the drive with an application (see
IEC 61800-3, Section 6.2.4.2). The drive behaves passively in this regard, i.e. load fluctuations
of the application will be visible without changes on the line side.
Note
Influence by ripple control signals
Ripple control signals in public supply systems can affect the operation of the drive system in
unfavorable cases and cause fault shutdowns (e.g. "undervoltage" or "phase failure"). This
particularly applies to FSA-C devices if they are operated in the factory-set U/f control mode.
● If ripple control signals are exerting unwanted influence, replace the U/f control mode
(Standard Drive Control application class) with the vector control (Dynamic Drive Control
application class).
11.8.3.2
High-frequency, conducted and radiated interference emissions, EMC Category C2
Description
The drive may only be used in the first EMC environment if at least the limit values of EMC
Category C2 are adhered to in regard to the interference emissions. To this end, the
requirements listed below must be satisfied:
● Operation on a TN or TT system with a grounded neutral point.
● Use of shielded motor cables with a length of max. 150 meters.
● Operation using the default pulse frequency (or with a reduced pulse frequency)
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
11.8 Electromagnetic compability of the converter
Technical data
1103
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