LENZE E82EV152_2C E82EV152_2C E82EV152_2C E82EV152_2C E82EV152_2C E82EV152_2C

SIMATIC CPUs are supplied via a load power supply. A system power supply that
supplies the backplane bus is integrated in the CPUs. Depending on the system
configuration, you can expand the integrated system power supply with up to two additional
system power supply modules. If your plant has high power requirements (e.g. I/O load
groups), you can connect additional load power supplies.
The main differences between the two power supplies for the SIMATIC automation
system are listed below:
Power supply Descrtion
Load power supply (PM) Supplies the system components such as CPU, system power supply (PS),
input/output circuits of the I/O modules and any sensors and actuators with 24 V DC.
You can install the load power supply directly to the left of the CPU (without connection
to the backplane bus).
The supply of the CPU or of the interface module with 24 V DC is optional if you
supply the voltage for the backplane bus via a system power supply.
System power supply (PS) Supplies only internally required system voltage.
Supplies parts of the module electronics and the LEDsIn order to ensure the supply of the modules from the backplane bus, the incoming power is
compared with the required power in the TIA Portal engineering system or in the TIA
Selection Tool.
As early as in the planning stages, make sure that the power fed into the backplane bus is
always greater than or equivalent to the power drawn.
System power supply modules
System power supplies supply the internal electronics of the modules with power
via the backplane bus. The table below shows the available system power supply modules:The load power supply modules with automatic range selection of the input voltage are
optimally adapted in design and functionality to the SIMATIC controller. The tablebelow shows the available load power supply modulesor SITOP modular) can be used:
● For higher output currents and 1-phase or 3-phase infeed
● With redundant installation of the 24 V power supply as protection against failure of a
power pack
● With buffering of the 24 V power supply (e. g. with DC UPS) as protection against power
failure
● With selective monitoring of 24 V loads against overload or short-circuitThe front connectors are used to wire the I/O modules. For modules with EMC-critical
signals, such as analog modules and technology modules, the front connectors also need a
shield contact.
The front connectors are available for 35 mm modules optionally with screw terminals and
push-in terminals and for 25 mm modules with push-in terminals. The front connectors for
25 mm modules are included in the scope of delivery of the I/O modules.
24 V DC is supplied, for example, via a plug-in infeed element for analog modules.
The shield contact consists of shield bracket and shield terminal. Together with the shield
terminal, the shield bracket allows the low-impedance, module-level connection of cable
shields with minimum installation times. The shielding takes place without tools.
The components (infeed element, shielding bracket and shield clamp) are included in the
scope of delivery of the modules.The individual modules are connected to one another with the U connector. The U connector

E82EV152_4C
E82EV152k2B
E82EV152K2C
E82EV152K2C
E82EV152K2C200
E82EV152K2C200
E82EV152k4B
E82EV152K4C
E82EV152K4C
E82EV152K4C200
E82EV152K4C200
E82EV153k4B
E82EV153K4B201
E82EV222k2B
E82EV222K2C
E82EV222K2C
E82EV222K2C200
E82EV222K2C200
E82EV222k4B
E82EV222K4C
E82EV222K4C
E82EV222K4C200
E82EV222K4C200
E82EV223k4B
E82EV223K4B201
E82EV251k2B
E82EV251K2C
E82EV251K2C200
E82EV302k2B
E82EV302K2C
E82EV302K2C200
E82EV302k4B
E82EV302K4C
E82EV302K4C200