Autonics SFL Series, User Manual

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5. Safety-related function
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i. -|Transparent setting guide|-
5.6.2 Floating blanking
Floating blanking is a function that the blanking zone follows the location of a moving object.
You can set the floating blanking zone via atLightCurtain. Only one zone consisting of continuous beams is available to set.
However, if you want to use the floating blanking with the fixed blanking function, do not overlap the zones.
You can set one floating blanking zone with the beams out of the fixed blanking zone.
In the series connection, be sure to set only one zone within the one set of light curtain, and cannot extend it
between the sets.
※
If you use the floating blanking with the muting function, the muting zone and floating blanking zone can be overlapped.
In case of the overlapped zone, when muting begins, the blanking is deactivated and activated again
after the muting ends.
※
If you use the floating blanking with the override function, when override begins, the blanking is deactivated and
activated again after the muting ends.
(1) How to deal with floating blanking error
You can select one of the error modes when the beams are clear.
Error mode OSSD Description
Lockout OFF
The light curtain enters the lockout condition.
After fixing an error of the blanking zone, reset the lockout condition.
The OSSD outputs are switched to ON state.
Warning OFF
The status indicator displays the warning.
After fixing an error of the blanking zone, reset the warning state.
The OSSD outputs are switched to ON state.
(2) Set tolerance
Set the tolerance that allows an object of a size greater than the detection capability. It helps to prevent floating blanking
error, resulting from the shake or vibration of beams at both ends of the blanking zone. Even if the tolerance is not blocked,
the OSSD outputs maintain ON state. If you set the number of floating beams more than two, be sure to set tolerance to make
a room for moving object. If you set the number of floating beams to one, you cannot set the tolerance.
The maximum number of tolerance and changed detection capability as follows.
Setting item Changed item
Floating beams Tolerance
Min value
of floating
beams
※1
Effective blocked
beams
※2
Changed detection capability ※3
Ø14mm Ø20mm Ø30mm
1 0 1 2 Ø23mm Ø35mm Ø55mm
2
0 2
3 Ø32mm Ø50mm Ø80mm
1 1-2
3
0 3
4 Ø41mm Ø65mm Ø105mm 1 2-3
2 1-3
4
0 4
5 Ø50mm Ø80mm Ø130mm
1 3-4
2 2-4
3 1-4
5
0 5
6 Ø59mm Ø95mm Ø155mm
1 4-5
2 3-5
3 2-5
4 1-5
… … … … … … …
15
0 15
16 Ø149mm Ø245mm Ø405mm
1 14-15
2 13-15
3 12-15
4 11-15
5 10-15
N(1-15) N
T
(0-5) (N-N
T
)-N N+1 14+(9×N) 20+(15×N) 30+(25×N)
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1: A condition of the minimum number of beams to keep the OSSD output in ON state, if the number of continuously
blocked beams in floating blanking zone is less than the minimum number of floating beams, causing a blanking error.
Be sure to configure the floating blanking zone to meet the condition below.
[min value of floating beams] = [floating beams] - [tolerance]
※
2: The condition of number of beams that OSSD output is switched to OFF state when light curtain is blocked.
※
3: It is determined by physical optical axis pitch and changed detection capability after applying blanking function.
※
If no zone is specified, floating blanking is unapplied, and the detection capability keeps the factory defaults.