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Connection to the 24 V busbars
The SITOP PSU400M provides an output voltage for the 24 V supply of the Smart Line Module via
the "+" and "–" terminals.
Table 7-4
OUTPUT DC: Output-side connection (24 V) of the SITOP PSU400M
OUTPUT DC
Terminal
Technical specifications
+ positive
Screw terminals:
Outputs "+" and "-", PE
- negative
Connectable cable cross-sections
0.05 - 4 (2.5) mm² solid (finely stranded) (AWG
24 ... 12)
Tool
Cross-tip screwdriver (0.6 x 3.5)
Tightening torque
0.5 - 0.6 Nm (lbf in)
Note
At the power supply output, you must connect the ground potential to the protective conductor
system (PELV). The cross-section of this connection must be at least as large as the cross-section
of the 24 V conductors.
More information on connecting the unit is provided in the "Installation" chapter of the
Equipment Manual "SITOP PSU400M Power Supply (
support.industry.siemens.com/cs/de/en/view/59038719
DC link components
7.2 SITOP PSU400M
Booksize power units
104
Equipment Manual, 01/2022, 6SL3097-6AC30-0BP0