Manual
PNOZ s4
Operating Manual PNOZ s4
21396-EN-12
8
CAUTION!
When used as a safety component in accordance with EN 81-1:
– The switch that is used must be designed as a safety switch in ac-
cordance with 14.1.2.2 of EN 81-1, so that a failure to open when en-
ergised is excluded.
– The supply lines to the safety switch must be laid in accordance with
13.5 of EN 81-1 so that short circuits that would bridge the contacts
in the switch can be excluded.
} Reset circuit/feedback loop
Reset circuit/feedback loop Reset circuit Feedback loop
Automatic reset
Manual/monitored reset
} Semiconductor output
U
B
24 VDC 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
}
: Gate open
}
: Gate closed