Power Supply - Siemens SIMATIC S7-1500 System Manual

Application planning

4.5 Power supply

4.5 Power supply
24 V power supply design
The SIMATIC Drive Controller is powered by an external 24 V supply (for example SITOP
power supply).
The current consumption of the SIMATIC Drive Controller (without the supply of
modules/interfaces) is a maximum of 1.7 A.
Table 4- 3
Interface
2 x USB 3.0
(short-circuit proof)
4 x DRIVE-CLiQ
16 x digital output
(short-circuit proof)
You can find an overview of the current consumption of SINAMICS components and
recommendations for the selection of SITOP Power power supply units in the SINAMICS
S120 Booksize Power Units manual.
Note
No electrical isolation
As ground potential and enclosure (PE) are connected over a low-impedance internal
connection, please note the following:
• Suitably dimensioned equipotential bonding cables are required between the 24 V power
supply and all grounded, physically separate devices.
• Insulation monitors are not permitted in the 24 V power supply.
Please also note the information in Connecting the supply voltage (Page 80).
66
Permissible current load for SIMATIC Drive Controller interfaces
5 V
2 x 900 mA
-
-
24 V
-
4 x 450 mA
16 x 500 mA
SIMATIC Drive Controller
System Manual, 11/2019, A5E46600094-AA