MA NUAL
RAY- LG X 1X X
Page 8
RAY-LG x1xx Manual
Version: 20170524
EN
Door Blanking
The RAY-LG can differentiate between a light beam interruption caused by an object and a light beam inter-
ruption caused by the closing door. The RAY-LG does this by analyzing the different interruption patterns
.
Closing door interruption pattern:
The light beam interruption of a closing door starts at the topmost beam going downwards. There are two
ways to achieve blanking:
When the RAY-LG is integrated into the guide rail,
the door moves directly in front of the light curtain.
This means the lowest section of the door needs to
be at least 30 mm in height to ensure that at least
one element is completely covered. It is also essen-
tial that the door's leading edge extends the full dis-
tance between the light curtain's emitter and re-
ceiver. (See figure 8.1)
If the light curtain is located either in front of or be-
hind the guide rail, the descending door will not in-
terrupt the active beams. However, blanking may
still be required if any part of the door (e.g. cable)
interrupts the light curtain. A beam blocker can be
used but it must be mounted so that at least one
element is continuously covered during door clo-
sure. (See figure 8.2)
RAY-LG Edge
Optical Element
Min. Height of the low-
est section of the door
Optical Element
Min. distance al-
ways covered
by the
beamblocker
Figure 8.1:
Door blanking through door edge
Figure 8.2:
Door blanking through beam blocker
