Floating Blanking - Omron F3SN Function Description

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1.3.2. Floating blanking

When more beams are interrupted than the specified number, the OSSD outputs go to the
OFF-state. For example, if two beams are specified, the interruption of three or more beams
is necessary to make OSSD outputs go to OFF-state. Up to three beams can be specified as
floating. This function is used when there is a moving object in the detection zone that needs
to be ignored. When the floating blanking function is valid, the blanking indicator is lit on a
receiver.
There are two modes in the floating blanking function.
(1) Sequential beam mode
The mode ON: When the number of consecutive obstructed beams exceeds the speci-
The mode OFF: When the total number of obstructed beams, which may not be con-
- Sequential beam mode= ON
- Sequential beam mode= OFF
The sequential beam mode should be set ON when the ignored moving object is only one,
and the mode should be set OFF when the objects are more than one, we recommend.
No. ST2-015031A
F F F F 3 3 3 3 S S S S N N N N
F F F F 3 3 3 3 S S S S N N N N
s s s s e e e e r r r r i i i i e e e e s s s s
s s s s e e e e r r r r i i i i e e e e s s s s
fied number of floating beams, the OSSD outputs go to the OFF-state.
It means that the object size in the detection zone must be large
enough to obstruct the floating beams completely at the same time to
make the OSSD outputs OFF. Even if there exist plural smaller ob-
jects in the detection zone, the OSSD outputs keeps in ON-state.
secutive, exceeds the specified number of floating beams, the OSSD
outputs go to the OFF-state.
Condition: Three beams are floating
-8-
Obstructed
Light reception
OSSD outputs =ON
OSSD outputs =OFF