3.2.4 Beam coding.
Depending on its configuration, the safety light curtain operates with 1 of 3 beam
codin
gs: uncoded, code 1 or code 2. 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 code 1 and the other with code 2.
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 Near Field Communication (NFC)
Overview
T
he receiver of the safety light curtain has an integrated NFC interface for transmitting
diagnostic data of the protective device to an NFC-capable device.
The integrated NFC interface is intended for temporary use.
Diagnostic data
T
he following diagnostic data can be displayed in an NFC-capable device:
•
Device-specific information of the protective device, e.g. name, serial number, type
code
•
Information on configuration, e.g. whether the restart interlock is activated
•
Current status of the protective device, e.g. status of the OSSDs, quality of the
alignment
•
Error diagnostics with specification of the error code, error description, diagnostic
LED and error correction
3 P
RODUCT DESCRIPTION
14
O P E R A T I N G I N S T R U C T I O N S | deTec4 8027140/2021-11-04 | SICK
Subject to change without notice
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