F39-TGR-CVL-B-2-R datasheet(32/98 Pages) OMRON

32 / 98 page

Fixed Blanking with Floating Blanking

Section 5-3

5-3

Fixed Blanking with Floating Blanking

!WARNING Use of Fixed Blanking and Floating Blanking will make MS4800 system less

sensitive to objects in the detection zone. Improper use of these features can

result in severe injury to personnel. Fixed Blanking may require a hard barrier

guard. Fixed Blanking and Floating Blanking may require an increase in the

safety distance. Read the following section carefully.

Possible combinations:

When both Fixed Blanking and Floating Blanking are selected, the floating

channels are allowed to occur anywhere within the detection zone except the

area selected by Fixed Blanking.

5-3-1

The effect of Fixed or Floating Blanking on minimum object

resolution

When fixed Blanking and/or Floating are active, the safe mounting distance is

affected. Fixed and Floating Blanking desensitize the light curtain and

increase the size of the minimum detectable object. The increase is equal to

the beam spacing distance for each beam that is disabled.

If the size of the object detected by the system increases the minimum safe

distance must also be increased. Use the minimum object sensitivity given in

the following tables to determine the new figure to use when computing the

safety distance.

MS4800 system - 14 mm resolution

MS4800 system - 30mm resolution

Function

Fixed Blanking

Floating Blanking

Fixed Blanking

N/A

Yes

Floating Blanking

Yes

N/A

Total number of Beams Disabled by

Fixed and/or Floating Blanking

Effective Resolution

None

14 mm

1 Beam

24 mm

2 Beams

34 mm

3 Beams

44 mm

4 Beams

54 mm

5 Beams

64 mm

> 64 mm

Total number of Beams Disabled by

Fixed and/or Floating Blanking

Effective Resolution

None

30 mm

1 Beam

50 mm

> 64mm

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