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Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Siemens SIMATIC S7-300 Module data
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Configuring
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
4-19
N
L1
L+
M
PS
S7-300 CPU
µP
L1
N
M
external
L+
U
internal
M
internal
Data
L1
N
DI
DO
PE
Ground bus in
cabinet
AC 230 V load
power supply
DC 24 V load power supply
* In the case of CPU 31xC or 312 IFM, the connection is automatically established.
*
Figure 4-9 Configuration with isolated modules
Non-isolated modules
In configurations with non-isolated modules, the reference potentials of the control
circuit (M
internal
) and load circuit (
M
external) are not electrically isolated (see the
figure below ).
Example:
For operation with an SM 334 AI 4/AO 2 analog I/O module you must connect one
of the grounding terminals M
analog
to the CPU's chassis ground.
The figure below shows a sample configuration of an S7-300 CPU with non-
isolated modules.

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Siemens SIMATIC S7-300 Module data Specifications

General IconGeneral
SeriesS7-300
ManufacturerSiemens
Protection ClassIP20
SystemSIMATIC S7-300
Digital InputsVaries by module
Digital OutputsVaries by module
Analog InputsVaries by module
Analog OutputsVaries by module
Central Processing UnitVaries by CPU model
Supply Voltage24V DC or 120/230V AC
CPU TypeVaries (e.g., CPU 312, CPU 315, etc.)
MemoryVaries by CPU model
Communication InterfacesMPI, PROFIBUS
Programming LanguagesLAD, FBD, STL, SCL, GRAPH
Operating Temperature0°C to 60°C
Storage Temperature-40°C to 70°C
Relative Humidity10% to 95% (non-condensing)

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