4-3
PP7, PP17-I, PP17-II Equipment Manual
Release 06/98
Step
Action
1
Select the snap-out opening on the front of the Push Button Panel
in which the 22.5 mm element is to be inserted.
2
Cut a slit in the foil on the front side of the Push Button Panel. The
slit must be located directly above the elongated hole
Ê
in the
middle of the selected snap-out opening. Use a sharp knife to slit
the foil.
Ë
Ê
Ì
3
Cut the foil corresponding to outer circumference
Ë
of the
selected snap-out opening. The round piece of foil, in whose place
the 22.5 mm element is to be inserted, is only connected to the
remaining foil above the three metal bars
Ì
.
Note:
Ensure that the foil on the front side of the Push Button Panel is
only cut in the area of the snap-out opening. In this way, the de-
gree of protection of the front surface is retained after the 22.5 mm
element has been installed.
4
Insert a screwdriver or similarly appropriate tool from the rear
through the elongated hole
Ê
in the middle of the selected snap-
out hole. Use the screwdriver to lever the metal piece out where
the 22.5 mm element is to be inserted.
5
Cut the foil corresponding to the opening which appears in the
front section of the Push Button Panel.
6
Insert the 22.5 mm element in the opening in the front of the Push
Button Panel.
The basis for interference-free operation is EMC hardware design of the PLC
and the use of interference-proof cables. The guidelines on the interference-
free design of the PLC apply equally to the installation of the Push Button
Panel.
!
Caution
Only shielded cables are permitted for all signal connections.
Screw or lock all plug connections.
Do not install signal lines in the same cable ducts as power cables.
Siemens AG refuses to accept liability for malfunctions and damage
arising from use of self-made cables or cables from other manufacturers.
Mechanical
installation of
22.5 mm elements
EMC compatible
design
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