SICK nanoScan3

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.
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, page 14.
3.3 Product characteristics
3.3.1 Variants
The device is available in various variants. You will find an overview of important
dis
tinguishing 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.
•
nanoScan3 Pro – EtherNet/IP™: 128 fields, 8 safety outputs via network
Integration in the control
T
he device communicates with the machine controller as follows:
•
EtherNet/IP™ CIP Safety™
Further topics
•
"Or
dering information", page 143
3.3.2 System plug
The safety laser scanner requires a system plug.
T
he safety laser scanner’s configuration memory is integrated in the system plug. The
system plug and all connecting cables can remain at the installation site when the
safety laser scanner is replaced. The system plug is detached from the defective safety
laser scanner and connected to the new safety laser scanner. The new safety laser
scanner reads the configuration from the configuration memory when switched on.
3.3.3 Field types
During operation, the safety laser scanner uses its laser beams to continuously check
whe
ther people or objects are present in one or more areas. The areas to be checked
are called fields. A distinction is made between the following field types, depending on
the application type:
PRODUCT DESCRIPTION 3
8027909/2023-02-22 | SICK O P E R A T I N G I N S T R U C T I O N S | nanoScan3 – EtherNet/IP™
15
Subject to change without notice