User Manual

SAFETY
Safety handbook page - 41 -
PNSPO
Example with two barriers composed of two single beam ESPE, four mute sensors and
one F3SP-U1P-TGR control unit.
Others characteritics of the F3SP control unit are the indicator, that is necessary for the
correct working of the system, and the override function, that is activated by the
pression of two pushbutton during the start-up of the unit.
7.5 Blanking application
Fixed Blanking:
Some applications have problems with mounting of
the light curtain. Therefore it is helpful to take out
zones from the protection field. With the function
blanking it is possible to specify beams that will not
interpreted by the light curtain. This is called fixed
blanking.
The remaining field or zone has to be protected by
mechanical guards.
Floating blanking:
Floating blanking function allows the output to remain
ON when beams of the sensor are interrupted
anywhere in the protection field. In contrast with fixed
blanking function, which invalids fixed detection area,
floating blanking function ignores object smaller than
specified radius. This reduces the optical resolution.
For calculating the safety distance this reduced
resolution has to be taken in account (see table below).
Resolution (mm) undetectable diameter (mm) floating beam gap
(mm)
0 1 2 3 1 2 3
9 14 23 32 41 4 13 22
15 25 40 55 70 5 20 35
30 40 70 100 130 20 50 80
60 70 130 190 250 50 110 170