8
Before positioning the safety device, take into account the following general indications:
Check that the temperature of the environments where the system is installed is
compatible with the temperature operating parameters indicated in the technical data.
Do not position the Emitter and Receiver close to sources of bright light or high intensity
flashing lights.
Particular environmental conditions may impair the detection efficiency of light curtains /
light grids. In places with the possibility of mist, rain, fumes or dust, for correct functioning
of the equipment it is advisable to apply suitable correction factors
CF
to the values of
useful operating range.
In these cases:
Pu = Pm x CF
with: Pu and Pm are respectively the useful and maximum operating range in meters.
The recommended CF factors are indicated in the table below.
ENVIRONMENTAL
CONDITION
CORRECTION FACTOR CF
Mist
0,25
Vapors
0,50
Dust
0,50
Dense fumes
0,25
Table 2
If the device is installed in areas liable to sudden changes in temperature, suitable
measures must be taken in order to avoid formation of condensation on the lenses which
could impair detection efficiency.
If light curtains / light grids are used with palletizers, depalletizers and stacking/destacking
machines for empty pallets, refer to EN 415-4.
POSITIONING
Protection of the guarded opening by a SLC/SLG 415 system must be completed with suitable
mechanical guards.
While the SLC/SLG 415 I system permits various types of installation (2, 4 sensors, one- or two-
way), the SLG 415 L and SLG 415 T have been designed for dedicated use.
•
The
SLG 415 L
system manages the muting function in
only one way
(out of a
danger zone). In this case, the horizontal arms must be positioned between the
dangerous area and the light curtain / light grid.
•
The
SLG 415 T
manages the muting function in
two-way mode
by using the muting
sensors on both sides of the light grid. This model is useful when objects have to be
transported into a danger zone and back using the same passage.
Summary of Contents for SLC 415
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