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Mounting
5.7 24 V power supply
Requirement
Hazardous voltage when connecting an external power supply
As a result of the connection, parts and components of the device can be live (under voltage).
Touching live components can result in death or severe injury.
• Connect the ground potential at the output of the power supply to the protective conductor
• Mount the power supply close to the drive line-up.
Description
SELV or PELV power supplies can be used when using external 24 V power supplies. The
following points must be taken into account when using an external 24 V power supply:
• The cross-section of the connection between ground and the protective conductor
connection must be at least as large as the cross-section of the 24 V conductors.
• The 24 V terminal adapter must be used for the infeed in the drive line-up.
• The external power supply must be installed close to the drive line-up.
Figure 5-10
96
WARNING
connection (PELV).
Ideally, they should be mounted on a common mounting plate. If different mounting plates
are used, they must be electrically connected in compliance with the requirements in
Configuration Manual EMC Installation Guideline
support.industry.siemens.com/cs/ww/en/view/60612658).
Example of a 24 V supply via an external power supply
(https://
Equipment Manual, 09/2023, A5E53307519B AA
Booksize power units
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