Siemens Simatic PC Panel PC 870 Start-Up Instructions page 20

Unpacking and Installing the Panel PC 670/870
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.
Figure 1–10
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.
1–12
Position 5 (interfaces at bottom)
Additionally permissible installation positions for the computer unit in a
decentralized design
SIMATIC Panel PC 670/870 Start-Up Instructions
Release 11/02