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8.2 Floating
blanking
<F3SN, F3ZN>
CAUTION
Use of floating blanking function involves a change of the safety
distance. Always recalculate and re-measure the safety distance to
confirm that it meets the applicable standards, after the change.
Failure to do so may cause the machine to fail to stop before an operator
reaches a dangerous area, and may result in serious injury.
When Fixed blanking function is enabled simultaneously with floating
blanking function, more beams than your plan may become invalid.
Perform sufficient verification, when you use both functions
simultaneously.
Failure to do so may result in serious injury.
Floating blanking function allows the output to remain ON when beams
of the sensor are interrupted anywhere in the field. In contrast with fixed
blanking function, which invalids fixed detection area, floating blanking
function ignores object smaller than specified radius.
Floating can be set for 1 to 3 floating beams.
(When 1 floating beam is set, sensor will turn OFF when 2 or more
beams are blocked).
- 22 -
CAUTION
Use of floating blanking function involves a change of the safety
distance. Always recalculate and re-measure the safety distance to
confirm that it meets the applicable standards, after the change.
Failure to do so may cause the machine to fail to stop before an operator
reaches a dangerous area, and may result in serious injury.
Resolution
(mm)
Undetectable
dia.(mm)
Floating beam
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
The following modes can be set in floating blanking function;
1. Sequential beam mode
- ON: Output becomes OFF when consecutive blocked beams
exceeds floating beams. Output will not becomes OFF
when plural objects smaller than undetectable diameter
exist.
- OFF: Output becomes OFF when sum of blocked beams exceeds
floating beams. Output may becomes OFF when plural
objects smaller than undetectable diameter exist.
2. Outermost beam invalid mode
Outermost beam invalid mode excludes outermost beams from
floating blanking.
When this mode is valid, the output will turn OFF if one of the
outermost beams is blocked, even if floating blanking is active.
