Mounting Position; Closed-Loop Control Of The Device Fan; Ventilation Clearances - Siemens SINAMICS S220 Equipment Manual

Mounting
5.1 Installation in the control cabinet
5.1.3

Mounting position

Requirement
NOTICE
Overheating due to inadmissible mounting position
Power units can overheat and therefore be damaged if mounted in an impermissible position.
• Only mount the components in a permissible mounting position in the control cabinet.
Description
As standard, the components are mounted vertically with the DRIVE-CLiQ connection at the top
in the control cabinet. Generally, they are located directly next to one another at a central
position in the control cabinet.
If another mounting position is permissible for a component, then this is separately
described in the corresponding chapter (e.g. line filters, line reactors).
5.1.4

Closed-loop control of the device fan

Description
The Line Modules and Motor Modules are force-ventilated using integrated fans and cooled by
natural convection. Variable speed fans are used, whose speed is aligned to the heat sink
temperature. When the pulse enable is issued, the fans operate for approx. 10 - 30 s at their
maximum speed. The speed is then reduced as a function of the heat sink temperature.
5.1.5

Ventilation clearances

Overview
Ventilation clearances in the control cabinet protect components from overheating in operation.
Inadequate ventilation clearances can result in malfunctions and can damage components.
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Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA