Siemens SIMATIC Box PC 620 Operating Manual page 19

Depending on the configuration of the device, two mounting brackets are included
in the scope of delivery. You can attach these to the housing with 6 screws (M3x6).
Equipotential grounding connection
Figure 2-1 Screw Connection Points for Mounting Brackets (Cover Side Downwards)
Instructions for wall and ceiling mounting
To install the SIMATIC Box PC 620 in a concrete wall or ceiling proceed as follows:
1. Fix the mounting brackets at the housing of the PC.
2. Drill four holes of 8 mm diameter and 60 mm depth into the wall or ceiling. You
will find the required dimension drawings on the following pages.
3. Insert the concrete plugs (8 mm diameter and 50 mm long) into the drill holes.
4. Fix the PC with four screws (4 mm diameter and 50 mm long).
In a plasterboard wall or ceiling (min. 13 mm thick), drill holes of 14 mm diameter
and fasten the PC with four anchors (4 mm diameter and 50 mm long).
In a metal sheet wall or eiling (min. 2 mm thick), drill holes of 5 mm diameter and
fasten the PC with four screws (4 mm diameter and min. 15 mm long).
Warning
!
The installer must verify that the wall or ceiling can support four times the full load
of the SIMATIC Box PC 620 (with mounting brackets and Add-On-Cards).
SIMATIC Box PC 620 Operating Manual
C79000-Z7076-C638-04
Commissioning the SIMATIC Box PC 620
M4 thread, max. depth of engagement 5 mm
M3 thread, max. depth of engagement 5 mm
2-3