3.2.4 Beam coding.
Depending on its configuration, the safety light curtain operates with 1 of 3 beam
codin
gs: uncoded, code1 or code2. The beam coding “uncoded” allows for particularly
short response times. In order to avoid mutual interference between 2 neighboring
safety light curtains, one can be operated with code1 and the other with code2.
3.2.5 Alignment aid
A laser alignment aid is installed in the sender of the safety light curtain. The laser
ali
gnment aid can be switched on to perform a simple alignment of the sender.
Diagnostic LEDs are installed in the receiver of the safety light curtain. For a simple
alignment of the receiver, diagnostic LEDs 1, 2, 3 and 4 indicate the alignment quality
once the safety light curtain has been switched on.
Diagnostic LEDs 5 and 6 light up if the topmost beam (far from system plug) is
synchronized. Diagnostic LEDs 7 and 8 light up if the bottommost beam (near system
plug) is synchronized.
3.2.6 Restart interlock
The safety light curtain has an integrated restart interlock. The function can be config‐
ur
ed during commissioning.
A restart interlock prevents the machine from starting again once the protective device
has been triggered. The operator must first press a reset pushbutton to allow the
protective device to resume its monitoring function. The operator can then restart the
machine.
The reset pushbutton can be connected locally to the extension connection or in the
control cabinet.
3.2.7 External device monitoring (EDM)
The safety light curtain has integrated external device monitoring. The function can be
conf
igured during commissioning.
The external device monitoring (EDM) monitors the status of downstream contactors.
In order to use external device monitoring, positively guided contactors must be used
to switch off the machine. If the auxiliary contacts of the positively guided contactors
are connected to the external device monitoring, the external device monitoring checks
whether the contactors switch correctly when the OSSDs are switched off.
3.2.8 Application diagnostic output
The safety light curtain has an application diagnostic output on the system connection
and on t
he extension connection.
Depending on the configuration, the application diagnostic output signals a certain
status of the safety light curtain, e.g. if the reset pushbutton must be engaged or if
there is a weak signal at the receiver.
For a signal of the safety light curtain to be displayed, a light can be connected to
the application diagnostic output or the signal can be transmitted to the machine
controller.
The following signals can be output over the application diagnostic output:
•
R
eset required
•
Weak signal
3 PRODUCT DESCRIPTION
14
O P E R A T I N G I N S T R U C T I O N S | deTec4 C4P-EAxxx3SC05 8028570/2023-07-27 | SICK
Subject to change without notice
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