Clearance - Siemens S7-300 Installation Manual

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You must maintain the clearance shown in the figure in order to provide sufficient
space to install the modules and to dissipate the heat generated by the modules.
This figure illustrates the clearances between multiple racks, as well as between
nearby equipment, cable channels, cabinet walls, etc.
For example, if you wire your modules using a cable duct, the clearance between
the bottom edge of the shielding contact element and the cable duct must be 40
mm.
1
20 mm
Figure 5-3 Clearance

Wiring using a cable duct

Clearance between cable channel and bottom edge of shielding contact element
must be 40 mm
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You will find information on how to install an S7-300 in the chapter entitled
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5-6
40 mm
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40 mm
40 mm
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40 mm
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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
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200 mm + a
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20 mm
A5E00203919-01