Siemens Simatic PC Panel PC 870 - Manual (Page 20)

Unpacking and Installing the Panel PC 670/870 Release 11/02
1–12 SIMATIC Panel PC 670/870 Start-Up Instructions
Additional permissible installation position for the computer unit complying
with UL508/CSA 22.2 No. 142
An installation angle of ± 15° is permitted in this position.
Position 5 (interfaces at bottom)
Figure 1–10 Additionally permissible installation positions for the computer unit in a
decentralized design
Select an appropriate installation location taking the installation notes and selected
installation angle into account.
Note
Ensure sufficient air volume for heat transportation within the switching
cabinet/panel. Further information on this is available in the Panel PC 670/870
Operating Unit Equipment Manual, Chapter 2.4.
Also ensure sufficient free space to pull out the Panel PC 670/870 from the
installation cut-out.
When selecting the installation location, ensure that the switching cabinet/panel
contains reinforcement bars to stabilize the cut-out. If necessary, install such
reinforcement bars.
Figure 1–11 below contains the dimensioning for the holes for the screw
mountings.