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3INSTALLATION AND DEINSTALLATION
3.2 CONNECTING THE SENSORS
ALS
20X
256
3.2.2
Alternative label sensor
Other suitable sensors can be used as an alternative to
the throughbeam photoelectric sensor.
– Permitted sensor types: PNP or NPN
– Default setting: PNP
Alternative label sensor and standard photo-
electric sensor may both be connected at the
same time. Selection of the active sensor is
done by calling the function MACHINE SETUP >
Label sens. type. The setting is stored within the
product profile.
Connecting the sensor
Plug the sensor in to the connector shown [51A]
(ALS 256: [51B]).
Pin assignment
1) chapter “Changing light/dark switching at the product sensor or the
alternativ label sensor” on page 47
Connection accessories Article no.
Connector (cable-Ø 4-6 mm) A8142
Connector (cable-Ø 6-8 mm) A8143
Connecting cable (coupling-plug) A7127
Pin Assignment
1+24V
2 +24 V or ground or no
connection
1)
3Ground
4 Sensor signal
[51] Connection for alternative label sensor:
A ALS 20X
B ALS 256
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