Operating instructions
Operating Instructions Chapter 4
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 33
Subject to change without notice
Configurable functions
4.8.3 Effective resolution for blanking
The effective resolution of an optical system depends on both its optical components and
on its configuration. The effective resolution cannot be higher than the highest possible
physical resolution of the system. However, it can be reduced by the configuration, e.g. by
blanking beams.
In conjunction with size tolerance, the effective resolution is reduced at the edges of the
blanked areas. For blanking with size tolerance, the effective resolution depends on the
physical resolution and the size tolerance chosen.
Check the minimum distance!
When using floating blanking with increased size tolerance, the required minimum
distance will depend on the effective resolution (see Tab. 11).
If required, recalculate the minimum distance and readjust it on the machine.
Example: – physical resolution 14 mm
– size tolerance –2 beams
– effective resolution 22 mm
Calculate the minimum distance with a resolution of 22 mm (see page 40).
Mark the effective resolution on the information label “Operation with blanking
combined with size tolerance …” on the related sender and receiver.
Warning: During operation with “Blanking” combined with “Size tolerance”, the minimum
distance that corresponds to the modified resolution is to be observed.
Physical resolution
R
esolution modified to:
(
please mark)
14 mm 20 mm 30 mm 40 mm
Size tolerance Effective resolution
1 beam 14 mm 20 mm 40 mm 60 mm
2 beams 22 mm 30 mm Not possible Not possible
4034160
Physical
resolution
Size tolerance Effective resolution at the
edges of the blanked area
Permissible types of
blanking
14 mm Without 14 mm Fixed
–1 beam 14 mm Fixed and floating
–2 beams 22 mm Floating
20 mm Without 20 mm Fixed
–1 beam 20 mm Fixed and floating
–2 beams 30 mm Floating
30 mm Without 30 mm Fixed
–1 beam 40 mm (no PSDI mode) Fixed and floating
–2 beams Not permitted Not permitted
40 mm Without 40 mm Fixed
–1 beam 60 mm Fixed and floating
–2 beams Not permitted Not permitted
WARNING
Fig.
18
:
Marking the effective
resolution on the device label
Tab.
11
:
Effective resolution
for blanking with size
tolerance