Note On Control Cabinet Cooling; General Information - Siemens SINAMICS S120 Combi Manual

Cabinet design and EMC

12.8 Note on control cabinet cooling

When mounting components on standard mounting rails, the equipotential bonding data
listed in the table apply. If only smaller connection cross-sections are permissible at the
components, then the largest possible cross-section should be used, e.g. 6 mm
These requirements also apply to distributed components located outside the control
cabinet.
Note
Non-observance of the above guidelines on equipotential bonding can lead to faults on the
fieldbus interfaces or to malfunction of the devices.
12.8 Note on control cabinet cooling
12.8.1

General information

The cabinet can be cooled, among others, by using:
● Filter fans
● Heat exchangers
● Refrigerators
● External air cooling
The decision in favor of one of these methods will depend on the prevailing ambient
conditions and the cooling power required.
The air routing inside the control cabinet and the cooling clearances specified here, must be
carefully observed. Other components or cables must not be installed/routed in these areas.
NOTICE
Reduced service life due to non-compliance with the installation guidelines
If you do not observe the guidelines for installing SINAMICS equipment in the cabinet, this
can reduce the service life of the equipment and result in premature component failure.
• Always comply with the installation guidelines for SINAMICS devices.
You must take into account the following specifications when installing a SINAMICS drive
line-up:
● Ventilation clearance
● Wiring and cabling
● Air guidance, air-conditioner
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for SMC.
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SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7