Configuring
4.2 Basic engineering principles
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
4-3
Horizontal and vertical installation
You can mount an S7-300 either vertically or horizontally. The following ambient air
temperatures are permitted:
•
Vertical assembly: 0 °C to 40 °C
•
Horizontal assembly: 0 °C to 60 °C
Always install the CPU and power supply modules on the left or at the bottom.
DC5
V
DC5
V
FRCE
FRCE
RUN
RUN
ST
OP
ST
OP
DC5 FRCE RUN STOP
CPU
CPU
PS
PS
1
3
SM SM SM SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM SM
1
1
2
1
3
The figure illustrates the following
(1)
the vertical installation of an S7-300
(2)
the horizontal installation of an S7-300
(3)
the mounting rail