Figure 4: Light pulses scan an area
1
Angular resolution: the angular distance (in degrees) between 2 distance measurements
Scan cycle time and resolution
T
he time that the mirror requires for one rotation is called the scan cycle time. The
number of light pulses per unit of time is constant. The scan cycle time and the number
of light pulses per unit of time determine the angular resolution. The scanning range
for a given object resolution depends on the angular resolution. The object resolution
indicates the minimum size that an object must be to allow it to be detected safely. The
scan cycle time also influences the response time.
Slightly different scan cycle times can be used to minimize mutual interference in
neighboring safety laser scanners.
The resolution in protective fields can be set to various values according to the
intended purpose.
Geometry of the scan plane
T
he laser beams emitted cover a sector of a circle, so an object can be detected in an
area of up to 275°.
The sector of a circle covered ranges from –47.5° to 227.5°, where 90° denotes the
axis of the safety laser scanner from the back to the front. When viewing the safety
laser scanner from above, the direction of rotation of the mirror and the deflected light
pulses is counterclockwise, see figure 4.
3.3 Product characteristics
3.3.1 Variants
The safety laser scanner is delivered in different variants. You will find an overview of
im
portant distinguishing features of the variants in the following.
Performance package
The Core and Pro performance packages feature a number of configurable fields and a
number of safety switching functions.
PRODUCT DESCRIPTION 3
8021219/1ELL/2022-01-21 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 – PROFINET
15
Subject to change without notice
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