Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Configuring
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
4-25
All CPUs except CPU 31xC
The figure below shows you the complete assembly of an S7-300 with TN-S mains
supply (does not apply to CPU 31xC).
Apart from powering the CPU, the PS 307 also supplies the load current for the 24
VDC modules.
Note: The arrangement displayed does not correspond with the physical
arrangement; it was merely selected to give you a clear overview.
low-voltage distribution
e. g. TN-S System (3 x 400 V)
cabinet
Rail
Ground bus in cabinet
PS
CPU
SM
Signal modules
L1
N
L+
M
µP
AC 24 to 230V load circuit for AC modules
DC 5 to 60V load circuit for non-isolated
DC modules
DC 5 to 60V isolated for
DC modules
AC
AC
AC
AC
DC
DC
L1
M
L2
L3
N
PE
Figure 4-12 Grounding conception S7-300 ( not with CPU 31xC)

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)