52
5.7.7
System availability
There must be a buffer distance of 83mm between the surrounding contour and the
detection zone contour (including the additions). This distance increases the up-time of
the AGV, since it prevents the surrounding contour from being detected as relevant for
generating a switch-off signal due to a measurement error.
Furthermore, the dust algorithm of the
SD3-A1
can be implemented if floating particles
may be present in the area. This algorithm can be activated in the user program
“
SD3SOFT
” and prevents the AGV from being switched OFF unintentionally. Please note
Chapter 5.3.5.
If the danger zone analysis allows a multiple evaluation, detection errors caused by
floating particles can be decreased. The number of evaluations that is decisive for the
response time of the scanner (T
SCAN
), and thus also requires a larger detection zone, can
be set in the user program “
SD3SOFT
”.
In the event of an error event that lasts only briefly (for example the effect of extraneous
light) the scanner performs a one-time reboot. If automatic startup / restart are activated,
the scanner turns the OSSDs back ON after this brief error event, and after the detection
zone has been free for about 25s. This one-time reboot results in an additional increase
in availability. This function does not have any effect if detection zone activation is faulty.
If startup test, startup interlock and / or manual restart are included, they will not be
removed.
Safety notes:
Automatic startup / restart must only be used in cases where there is absolutely no
possibility that the effective detection zone could be entered or bypassed in some other
way. Depending on the hazard assessment, visual and / or acoustic startup warnings
should be provided.
If parameters are set for the function “Manual restart”, the required enable from the
startup / restart button affects all detection zones and is independent of any detection
zone changeover. If the current detection zone is manually enabled, this enable also
applies even if the system switches to another detection zone and this detection zone
becomes free! If startup / restart interlock is in effect in the current detection zone, it is
also in effect for the other detection zone to which the system switches even if this
detection zone is free.
5.7.8 Restart
At least 2s must elapse following the release of a violated detection zone before the AGV
is allowed to startup again (in accordance with DIN EN 1525). The restart can be initiated
either manually or automatically. In case of automatic restart, the delay time of up to 10s
can be set in advance using the program “
SD3SOFT
”. If a restart button is provided, it
must be mounted outside the danger zone at a position from which the entire danger
zone can be viewed. The areas that will be released must also be referred to in an easily
understandable manner. The startup / restart interlock affects all detection zones and
does not depend on any detection zone changeovers.
Please comply with the safety notes in Chapter 3 and Chapter 5.7.7.
Summary of Contents for SD3-A1
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Page 40: ...40 Fig 5 4 5 Considering the maximum measurement distance when safeguarding an area...
Page 60: ...60 Fig 6 2 1 Example of a zone pair changeover for an AGV on a curved route...
Page 61: ...61 Fig 6 2 2 Example of zone pair changeover with combined with reducing speed of the AGV...
Page 101: ...101 13 13 Dimensional drawings of the SD3 A1...
Page 102: ...102 13 14 Dimensional drawings of the mounting system...
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