Fixed Blanking With Floating Blanking - Omron MS4800E - MANUAL 2 Operation Manual

Fixed Blanking with Floating Blanking

5-3 Fixed Blanking with Floating Blanking
!WARNING
5-3-1 The effect of Fixed or Floating Blanking on minimum object
resolution
14
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:
Function Fixed Blanking
Fixed Blanking N/A
Floating Blanking Yes
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.
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
Total number of Beams Disabled by
Fixed and/or Floating Blanking
None
1 Beam
2 Beams
3 Beams
4 Beams
5 Beams
MS4800 system - 30mm resolution
Total number of Beams Disabled by
Fixed and/or Floating Blanking
None
1 Beam
Floating Blanking
Yes
N/A
Effective Resolution
14 mm
24 mm
34 mm
44 mm
54 mm
64 mm
> 64 mm
Effective Resolution
30 mm
50 mm
> 64mm
Section 5-3