4.1.3 EMC limit values in South Korea
The EMC limit values to be observed for Korea correspond to the limit values of the EMC product
standard for variable-speed electric drives EN 61800-3 of category C2 or the limit value class A,
Group 1 according to EN 55011. By implementing appropriate additional measures, the limit
values according to category C2 or limit value class A, Group 1, are observed. Further, additional
measures may be required, for instance, using an additional radio interference suppression
lter (EMC lter).
The measures for EMC-compliant design of the system are described in detail in this manual
respectively in the Installation Guideline EMC.
Please note that the nal statement on compliance with the standard is given by the respective
label attached to the individual unit.
4.1.4 EMF assessments for 24 V components
The 24 V components, e.g. control systems (NCU, MCU, PPU), PCUs/IPCs, operator panels,
handheld terminals and machine control panels do not generate any appreciable
electromagnetic elds.
No minimum clearance has to be maintained for 24 V components.
4.2 Climatic and mechanical environmental conditions
4.2.1 Shipping and storage conditions
The components of the SINUMERIK 840D sl system exceed the requirements according to
EN 61800‑2 with regard to shipping and storage conditions.
The following data applies under the following conditions:
• Long-term storage in the transport and product packaging:
At weather-protected locations that have continuous contact with outside air through
openings.
• Transport in the transport packaging:
– In unventilated containers under conditions not protected from weather eects.
– In the “cold" in accordance with outside air.
– Air transport in the air-conditioned cargo hold.
Application planning
4.2 Climatic and mechanical environmental conditions
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1 35
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