Pilz PNOZ s3 - Page 13

PNOZ s3
Operating Manual PNOZ s3
21395-EN-12
13
Input circuit Single-channel Dual-channel
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
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 [ 22]).
NOTICE
When operated with a light grid or sensor
– It must not be possible to switch off the supply voltage for the PNOZ-
sigma 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.