3.2.2
Beam coding
Depending on its configuration, the multiple light beam safety device operates with 1 of
3 beam codings: Uncoded, code 1 or code 2. It is delivered with the factory setting
Uncoded, which enables particularly short response times. In order to avoid mutual
interference between 2 neighboring multiple light beam safety devices, one can be
operated with code 1 and the other with code 2.
3.2.3
Alignment aid
Diagnostic LEDs are installed in the active unit of the multiple light beam safety device.
For a simple alignment of the passive unit, diagnostic LEDs 1 … 8 indicate the align‐
ment quality once the device has been switched on.
•
In a system with 2 beams, the alignment quality is indicated via the diagnostic
LEDs 1 … 4.
•
In a system with 4 beams, the alignment quality of the beams close to the system
plug is indicated via the diagnostic LEDs 1 … 4 and the alignment quality of the
beams remote from the system plug via the diagnostic LEDs 5 … 8.
3.2.4
Restart interlock
The multiple light beam safety device has an integrated restart interlock. The function
can be configured during commissioning.
A restart interlock prevents the machine from starting again once the protective device
has been triggered. First, the operator must press a reset pushbutton to return the pro‐
tective device to monitoring status. Then, in a second step, the operator can restart the
machine.
The reset pushbutton can be connected locally on the system or extension connection.
3.2.5
External device monitoring (EDM)
The multiple light beam safety device has integrated external device monitoring. The
function can be configured 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.
External device monitoring can be configured on the system connection or on the exten‐
sion connection.
3.2.6
Application diagnostic output
The multiple light beam safety device has an application diagnostic output on the sys‐
tem connection and on the extension connection.
Depending on the configuration, the application diagnostic output signals a certain sta‐
tus of the protective device, e.g. if the reset pushbutton must be engaged or if there is a
weak signal at the active unit.
For a signal of the protective device to be displayed, a light can be connected to the
application diagnostic output or the signal can be transmitted to the machine con‐
troller.
The following signals can be output over the application diagnostic output:
•
Weak signal
•
Reset required
PRODUCT DESCRIPTION
3
8024782/2019-11-19 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTem4 A/P
13
Subject to change without notice