Connecting To The 24 V Power Supply Using Daisy Chain - Siemens SINAMICS G115D Operating Instructions Manual

at interface X01, so that both the switched and the unswitched 24 V come from the same
supply.
24 V DC power supply unit
The integrated 24 V DC power supply unit (PSU) is optionally available to generate 24 V DC power
supply from the line supply. It supplies 24 V DC power to one converter only and does not
support daisy-chain connections.
For converters integrated with both the repair switch and the 24 V PSU, the 24 V DC power
supply to the converter is maintained when you switch off the 400 V AC supply via the repair
switch.
Requirements for applications in USA and Canada
Use a NEC Class 2 or a limited voltage/limited current power supply for variants with 7/8"
connector; use a limited voltage power supply for all other variants.
Integrated AS-i 24 V DC supply
For converters with the AS-i interface and the integrated 24 V DC power supply should note that
the integrated 24 V DC power supply powers the auxiliary 24 V DC. Therefore, the black AS-i
cable is not needed in these circumstances.
Further information
5.11.2

Connecting to the 24 V power supply using daisy chain

The SINAMICS G115D system has been designed to allow a converter to provide the 24 V DC
power for a number of converters in a daisy chain.
The figure below exemplifies the methodology for daisy-chaining multiple converters:
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
Cables and connectors (Page 64)
Glanded installation kit (Page 36)
5.11 Connecting the 24 V power supply
Wiring
79