PNOZ s4
Operating Manual PNOZ s4
21396-EN-21
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NOTICE
When operated with a light grid or sensor
– It must not be possible to switch off the supply voltage for the
PNOZsigma separately from the supply voltage for the light grid or
safety switch.
– The operating mode selector switch must be set to "Without detection
of shorts across contacts", as shorts across contacts are detected by
the ESPE.
Start circuit/feedback loop Without feedback loop
monitoring
with feedback loop monit-
oring
Automatic start
K5
K6
K5
L1
N
K6
S12
13 (23,33)
S34
14 (24,34)
Monitored, manual start/re-
start
K5
K6
K5
L1
K6
S12
S34
S3
N
13 (23,33)
14 (24,34)
NOTICE
In the event of an automatic start or manual start with bridged start
contact (fault):
The unit starts up automatically when the safeguard is reset, e.g. when the
E-STOP pushbutton is released. Use external circuit measures to prevent
an unexpected restart.
Unit types with U
B
24 VDC Unit types with U
B
48 - 240 VAC/DC
*Connect together the 0V connections on all
the external power supplies
Legend
} S1/S2: E-STOP/safety gate switch
} S3: Reset button
} : Switch operated
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