Siemens SIMATIC S7-1500 System Manual page 39

Optionally, you can insert up to two system power supplies (PS) in the slots to the right of the
CPU/interface module.
The number of load current supplies is unlimited.
Observe the installation rules and specified installation distances in the manuals of the load
current supplies.
System power supplies
● PS 25W 24V DC: Supply voltage with 24 V DC and infeed power to the backplane bus of
25 W
● PS 60W 24/48/60V DC: Supply voltage with 24/48/60 V DC and infeed power to the
backplane bus of 60 W
● PS 60W 120/230V AC/DC: Supply voltage with 120/230 V AC and infeed power to the
backplane bus of 60 W
Load current s upplies
The load current supplies listed below have been technically adapted especially to the
S7-1500 automation system/ET 200MP distributed I/O system. Use of the listed load current
supplies is not imperative because a SITOP module, for example, can be used an
alternative.
● PM 70W 120/230 V AC: Supply voltage with 120/230 V AC and infeed power to the
backplane bus of 70 W
● PM 190W 120/230 V AC: Supply voltage with 120/230 V AC and infeed power to the
backplane bus of 190 W
Also note the following FAQ on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/96998532) in connection with load
current supply units.
Automation system
System Manual, 09/2016, A5E03461182-AD
Application planning
3.2 System and load power supply
39