Installing the mounting rail
Note
Minimum clearances
Observe the minimum distances in the control cabinet.
You can find additional information in section "Minimum clearances in the control cabinet
(Page 185)".
1. Screw the rail onto the mounting surface.
Additional information
● You can find additional information on the exact dimensions of the mounting rails in
section Dimension drawings of the mounting rails (Page 187).
● You can find information on the tightening torques in section "Tools and tightening torques
(Page 186)".
● You can find information about grounding in section "Connecting the functional earth to the
CFU (Page 65)".
6.3 Installing the CFU
Tools required
You can find information on this in section "Tools and tightening torques (Page 186)".
Requirement
● The mounting surface must be level, stable and free from vibrations.
● Select the mounting material that best suits the mounting surface.
● All the connecting cables are prepared.
● Clearance of at least 60 mm below the CFU:
For connecting cables to the sensors and actuators at the freely configurable channels or
the equipotential bonding spur lines for the CFU PA
● Pay attention to using suitable cable cross-sections and tightening torques for the cable
glands.
Installing a Compact Field Unit
Observe the minimum distances and the bending radii of the cables used during the installation.
Installation
6.3 Installing the CFU
SIMATIC CFU
50 Commissioning Manual, 08/2019, A5E39252870-AD
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