Siemens Simatic S7-1500 / ET 200MP - Digital Input Electrical Characteristics; Digital Output Electrical Characteristics

System overview
4.3 Components
Automation system
52 System Manual, 01/2023, A5E03461182-AK
Components
Function
Diagram
Labeling strips for the
exterior of the front
cover of the I/O mod-
ules
The labeling strips are used to label the modules for specific plants.
You can label the labeling strips using a machine. The labeling strips
are available in various colors:
• Al gray: Non-fail-safe modules
• Yellow: Fail-safe modules
The labeling strips are included in the scope of delivery of the I/O
modules and compact CPUs (for onboard I/O). Additional labeling strips
can be ordered as Accessories/spare parts (Page 363).
4-pole connection plug
for supply voltage of
the CPU/interface mod-
ule
The supply voltage is supplied by means of the 4-pole connection plug.
System power supply
(PS)
The system power supply is a diagnostics-capable power supply mod-
ule, that can be connected with the backplane bus using a U connect-
or.
A system power supply is required when the power fed from the
CPU/interface module into the backplane bus is not sufficient to supply
the connected modules with power.
System power supplies are available in various models:
• PS 25 W 24 V DC
• PS 60 W 24/48/60 V DC
• PS 60W 24/48/60V DC HF*
• PS 60 W 120/230 V AC/DC
A power cable connector with coding element and U connector is
included in the scope of delivery of the system power supply and may
be ordered as spare part.
Load current supply
(PM)
The load current supply (PM) supplies the system power (PS), central
modules (CPU), interface module and input and output circuits of the
I/O modules with 24 V DC.
If you are using load current supplies, we recommend the devices from
our SIMATIC series. These devices can be mounted on the mounting
rail.
Load current supplies are available in various models:
• PM 70 W 120/230 V AC
• PM 190 W 120/230 V AC
As an alternative to the SIMATIC load current supplies (PM), you can
also use SITOP smart power supplies. Use of a SITOP smart power sup-
ply is recommended in these cases, among others:
• Higher power requirement
• Redundancy
• Uninterruptible power supply
For more information on the SITOP modules, refer to an FAQ on the
Internet
(https://support.industry.siemens.com/cs/ww/en/view/96998532).
* Additionally the PS 60W 24/48/60V DC HF keeps the complete work memory of the CPU retentive.
Reference
You can find more information on the different function classes (for example, basic,
standard) of the interface and I/O modules in an FAQ on the Internet
(https://support.industry.siemens.com/cs/de/de/view/109476914/en).