SICK deTec4 User Manual

4.3.5 Reduced resolution
Overview
Usin
g a reduced resolution, up to 2 adjacent beams can be interrupted without the
OSSDs switching to the OFF state.
As a result, smaller objects can move into the detection area of the safety light curtain
without the curtain reacting and the machine switching off. For this purpose, the permit‐
ted resolution is reduced by up to 2 beams.
The reduced resolution can be used for suppressing interference objects, if, for
instance, cables or hoses need to be routed through the protective field. The function
can be configured during commissioning.
Important information
NOTE
If t
he safety light curtain is configured with a reduced resolution, then the minimum
distance must be calculated according to the effective resolution in accordance with
ISO 13855.
If the effective resolution is > 40 mm, a different formula may have to be used for the
calculation of the minimum distance.
NOTE
If a r
educed resolution and automatic calibration of the protective field width is config‐
ured, no objects may be in the protective field upon activation. Otherwise, this may
influence the automatic calibration of the protective field width.
NOTE
W
hen reduced resolution is configured, the effective resolution must be marked on the
device and on the machine by taking suitable measures, e.g. a mark or an information
label provided by SICK. The information label is available as an accessory.
NOTE
If r
educed resolution and Smart Box Detection are configured, different effective res‐
olutions apply to the safety light curtain, see "Effective resolution with Smart Box
Detection", page 52.
Effective resolution with reduced resolution
T
he effective resolution of the safety light curtain changes due to the reduced resolu‐
tion. Objects up to a certain height can move in the detection zone of the safety light
curtain without the beams being interrupted and the machine switching off.
Table 15: Effective resolution with reduced resolution
Physical resolution Reduction Effective resolution Maximum size of
mo
ving objects
14 mm 1 beam 24 mm 10 mm
2 beams 34 mm 20 mm
30 mm 1 beam 55 mm 25 mm
2 beams 80 mm 50 mm
Further topics
•
"Minimum dis
tance from the hazardous point", page 28
•
"Additional accessories", page 164
4 P
ROJECT PLANNING
38
O P E R A T I N G I N S T R U C T I O N S | deTec4 8021645/1EB0/2022-04-28 | SICK
Subject to change without notice

SICK deTec4 Specifications

General

Brand	SICK
Model	deTec4
Category	Safety Equipment
Language	English