The safety laser scanner’s configuration memory is integrated in the system plug. The
s
ystem 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 continuously to 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
how the safety laser scanner is used:
•
Protective field
•
Contour as Reference field
•
Contour detection field
•
Warning field
Table 2: Field types and their function
Protective field Contour as Reference
f
ield
Contour detection field Warning field
Safe switch off (accord‐
ing to ISO 13849-1)
Yes (PL d) Yes (PL d) Yes (PL d) No
Max. scanning range of
t
he safety laser scan‐
ner
3.0 m 3.0 m 3.0 m 10 m
Purpose Detection and protec‐
tion of people
Tamper protection Contour monitoring Functional use (not
safety application)
Description The protective field pro‐
tects the hazardous
area of a machine or
vehicle. As soon as the
electro-sensitive protec‐
tive device detects an
object in the protective
field, it switches the
associated safety out‐
puts to the OFF state.
This signal can be
passed to controllers
resulting in the danger‐
ous state coming to an
end, e.g. to stop the
machine or the vehicle.
The reference contour
field monitors a contour
of the environment. The
safety laser scanner
switches all safety out‐
puts to the OFF state if
a contour does not
match the set parame‐
ters, because, for
example, the mounting
situation of the safety
laser scanner were
changed.
The contour detection
field monitors a contour
of the environment. The
safety laser scanner
switches the associated
safety outputs to the
OFF state if a contour
does not match the set
parameters, because,
for example, a door or
flap is open.
The warning field moni‐
tors larger areas than
the protective field.
Simple switching func‐
tions can be triggered
with the warning field,
e.g. a warning light or
an acoustic signal can
be triggered if a person
approaches, even
before the person
enters the protective
field.
3.4 Example applications
Hazardous area protection
In ha
zardous area protection, people are detected if they stay in a defined area.
This type of protective device is suitable for machines, where it is possible to see a haz‐
ardous area completely from the reset pushbutton. When the hazardous area is
entered, a stop signal is triggered and starting is prevented.
3 P
RODUCT DESCRIPTION
14
O P E R A T I N G I N S T R U C T I O N S | nanoScan3 I/O 8024596/15VP/2019-11-15 | SICK
Subject to change without notice
To Next Page
Loading...
