Installing The Cfu - Siemens Simatic CFU Commissioning Manual

Installation

6.3 Installing the CFU

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 148)".
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 149).
● You can find information on the tightening torques in section "Tools and tightening
torques (Page 149)".
● You can find information about grounding in section "Connecting the functional earth to the
CFU (Page 47)".
6.3 Installing the CFU
Required tools
You can find information on this in section "Tools and tightening torques (Page 149)".
Requirement
● The mounting surface must be level, stable and free from vibrations.
● Select the mounting material that best matches the mounting surface.
● All the connecting cables are prepared.
● Clearance of at least 60 mm below the modules 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.
32
Commissioning Manual, 07/2018, A5E39252870-AC
SIMATIC CFU