Pilz PNOZ s4 - Connection Diagrams; Supply Voltage and Input Circuit Wiring

PNOZ s4
Operating Manual PNOZ s4
21396-EN-21
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Connection
Supply voltage Unit types with
U
B
24 VDC
Unit types with
U
B
48 - 240 VAC/DC
A1
L+
A2
L-
Input circuit Single-channel Dual-channel
Emergency stop
without detection of shorts
across contacts
S1
S11
S22
S12
S1
S11
S12
S22
Emergency 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, detection of shorts
across contacts via ESPE,
operating mode selector
switch in the position
"without detection of shorts
across contacts"
(only for unit types with
U
B
= 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 [ 35]).