
PNOZ s7.1
Operating Manual PNOZ s7.1
21865-EN-08
7
Preparing for operation
} Supply voltage
Supply voltage AC DC
Base unit:
PNOZsigma safety relay
Base unit:
PNOZ X safety relay
Supply voltage for expansion
modules PNOZsigma
} Input circuit
Input circuit Single-channel Dual-channel
Base unit:
Safety relay PNOZsigma
Base unit:
Safety relay PNOZ X
Base unit:
Safety relay PNOZelog Driv-
en via semiconductor out-
puts (24 V DC)
} Reset circuit/feedback loop
Reset circuit/feedback loop Base unit: Safety relay
PNOZ X
Base unit: Safety relay
PNOZelog
The inputs that evaluate the
feedback loop will depend on
the base unit and application
Y1
Y2
PNOZsigma
expansion
module
feedback
loop
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