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. Voltages
outside this range may cause malfunctions.
Connect the grounding connection
of the Push Button Panel to the cabinet
ground. To 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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