4-4
PP7,
PP17-I, PP17-II Equipment Manual
Release 06/98
All
MPI and DP bus cables can be used.
!
Caution
When using a 24 V supply
, ensure that the extra-low voltage is safely iso
-
lated.
The supply voltage must be within the specified voltage range. V
oltages
outside this range may cause malfunctions.
Connect the grounding connection of the Push Button Panel to the cabinet
ground. T
o do this, use the grounding screw supplied with the Push Button
Panel.
Push
Button
Panel
+24 V
0 V
Input
Output
Push
Button
Panel
+24 V
0 V
!
Warning
No
safety-related functions may be realized using the Push Button Panel.
Cable
Voltage supply
Grounding con-
nection
Connection of
additional display
and operating ele-
ments
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