Pilz PNOZ s4.1 - Connection Examples; Input Circuit Wiring Configurations

PNOZ s4.1
Operating Manual PNOZ s4.1
21890-EN-15
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Connection
} Supply voltage
Supply voltage Unit types with
U
B
48 - 240 VAC/DC
Unit types with
U
B
24 VDC
A1
L+
A2
L-
} Input circuit
Input circuit Single-channel Dual-channel
E-STOP
without detection of shorts
across contacts
S1
S11
S22
S12
S1
S11
S12
S22
E-STOP
with detection of shorts
across contacts
S1
S22
S21
S12
S11
Safety gate
without detection of shorts
across contacts
S1
S22
S11
S12
S1
S2
S11
S12
S22
Safety gate
with detection of shorts
across contacts
S1
S2
S12
S11
S22
S21
Light beam device or safety
switch with detection of
shorts across contacts via
ESPE
(only when UB = 24 VDC)
A1
A2 S12
S22
24 V DC
GND
NOTICE
With single-channel wiring the safety level of your machine/plant may be
lower than the safety level of the unit (see Safety characteristic
data [ 30]).