PNOZ po3.1p
Operating Manual PNOZ po3.1p
20676-EN-07
7
Unit features
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Expansion module control inputs via PNOZpower bus
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Positive-guided relay outputs:
– 8 safety contacts (N/O)
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LED indicator for:
– Supply voltage
– Switch state of the safety contacts
– Error
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Plug-in connection terminals
Safety features
In conjunction with a base unit of the safety system PNOZpower, the expansion module ful-
fils the following safety requirements:
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The circuit is redundant with built-in self-monitoring.
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The safety device remains effective in the case of a component failure.
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The correct opening and closing of the safety device relays is tested automatically in
each on-off cycle.
Block diagram/terminal configuration
PN
O
Z
p
o
w
e
r-B
u
s
PN
O
Z
p
o
w
e
r-B
u
s
13 23 33
43 53 63 73
14 24 34
44 54 64 74
83
84
*Safe separation from non-marked area, except for safety contact 83-84, in accordance
with EN 60947-1, 6 kV, basic insulation between all safety contacts.
