Interference Emissions And Interference Immunity; Cable Shielding And Routing - Siemens SINAMICS S120 Equipment Manual

Cabinet design and EMC for components, Blocksize format

11.4 Cable shielding and routing

11.3.3

Interference emissions and interference immunity

Emitted interference
Radio interference suppression filters are required in order to limit interference emission.
These filters can either be integrated in the device, or externally mounted.
Interference immunity
With reference to interference immunity, SINAMICS S120 units can also be used in the first
environment.
Note
Integrating SINAMICS S120 in other plants/machines
When PDS (variable-speed drive systems) are integrated in other plants/machines,
additional measures may be required in order to comply with their product standards.
With respect to the compliance with limits for harmonic currents, the EMC product standard
EN61800-3 for PDS refers to compliance with standards EN 61000-3-2 and EN 61000-3-12.
Converters are classified as equipment used on a professional basis, deployed in certain
areas of business and industry - and are not operated in the general public domain.
The following general conditions must be observed when used in the first environment:
● The drive system must be installed in compliance with EMC regulations by appropriately
trained professionals.
● The converters must be equipped with a Category C2 line filter.
● The device-specific information and instructions for maintaining harmonic current limits
must be complied with. Typical values, see Chapter "Harmonic currents (Page 136)".
11.4 Cable shielding and routing
In particular for meeting the requirements of EMC, certain cables must be routed with
sufficient spacing and certain components must be mounted with a suitable clearance. To
full EMC requirements, the following cables must be used with shields:
● Power supply cables from line filter via line reactor to Power Module
● All motor cables (if necessary, including cables for motor holding brake)
● Cables for "fast inputs" of the Control Unit
● Cables for analog direct voltage/current signals
● Signal cables for encoders
● Cables for temperature sensors
Alternative measures (e.g. routing behind mounting plates, suitable clearances) can also be
used provided they have similar results. This excludes measures that relate to the design,
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Manual, 06/2019, 6SL3097-5AL00-0BP1
AC Drive