Pilz PNOZ s4 C 48-240VACDC 3 n/o 1 n/c - Manual (Page 10)

PNOZ s4
Operating Manual PNOZ s4
21396­EN­13 10
Light beam device or safety
switch with detection of
shorts across contacts via
ESPE
(only when U
B
= 24 VDC)
S12
S22
24 V DC
A2
GND
NOTICE
When used as a safety component in accordance with EN 81­1:
– The switch that is used must be designed as a safety switch in ac­
cordance with 14.1.2.2 of EN 81­1, 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 81­1 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
K5 K6
K5
L1
N
K6
S12
13 (23,33)
S34
14 (24,34)
Manual/monitored reset
S12
S34
S3
K5 K6
K5
L1
K6
S12
S34
S3
N
13 (23,33)
14 (24,34)
} 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: E­STOP/safety gate switch
} S3: Start button
}
: Switch operated
}
: Gate open
}
: Gate closed