Siemens SINAMICS S120 Manual page 82

Electrical installation
4.5 Connections
NOTICE
Inadmissible equalization currents as a result of potential differences when using several
infeed points
Using different power sources for the auxiliary power system for several subsections can
result in potential differences and inadmissible equalizing currents.
• Use the same voltage source for the electronics power supply of the individual
• Connect the PE busbars of the subsections to one another.
Connecting terminals
At least two terminals are always available to the customer at the terminal blocks for tapping
the auxiliary voltages.
Table 4- 4 X140: 230 V AC
Terminal Designation
1, 2 L1
3, 4 N
The maximum current rating of the auxiliary power supply system is 28 A.
Max. connectable cross-section: 2.5 mm
Max. total current of all tapping terminals available
1)
Table 4- 5 X150: 24 V DC
Terminal Designation
1, 2 P24
4, 5 M
The maximum current rating of the auxiliary power supply system is 28 A.
Max. connectable cross-section: 2.5 mm
82
subsections.
Assigned voltages
230 V 1 AC (max. 265 VAC)
2
Assigned voltages
24 VDC for the electronics power supply (max. 30 VDC)
2
Rated current
Max. 10 A
1)
Rated current
Max. 28 A
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A