4.3.4 Distance from reflective surfaces
The minimum distance a can be
established from the table:
4.3.5 Arrangement of two adjacent safety light barriers ULVT/ BLVT...
To eliminate the mutual clashing of two adjacent ULVT/BLVT... safety light barriers, the following must be
observed when arranging two light barriers:
installation range in m up to 3 4 5 6 7
distance a in mm 130 175 219 262 306
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4 Installation - Construction requirements
fig 18/1 distance from reflective surfaces
fig. 18/3 Arrangement of 2 adjacent light curtains
hazardous area
reflective Object
(e.g. metal container)
ULVT receiver
ULVT receiver
Approach direction
interrupted beam
Central Beam
Contai-
To prevent the avoidance
and non-detection of an
obstacle due to reflecting
objects, the ULVT/BLVT
safety light barrier must be assembled
with a minimum distance a (Fig. 18/1)
from the reflective object.
Table 18/2 installation ranges and distances
receiver
transmitter
receiver
transmitter
transmitter
transmitter
receiver
receiver
transmitter
transmitter
receiver
receiver
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