Siemens SINAMICS S120 Manual page 90

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
Terminal
1, 2
3, 4
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
Terminal
1, 2
4, 5
The maximum current rating of the auxiliary power supply system is 28 A.
Max. connectable cross-section: 2.5 mm
88
subsections.
X140: 230 V AC
Designation
L1
N
X150: 24 V DC
Designation
P24
M
Assigned voltages
230 V 1 AC (max. 265 VAC)
2
Assigned voltages
24 VDC for the electronics power supply (max. 30
VDC)
2
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Rated current
Max. 10 A
1)
Rated current
Max. 28 A