Supplement Z
R
for reflection-related measurement errors
DANGER
Persons or parts of the body to be protected may not be recognized or not recognized in
time in case of non-observance.
Retro-reflectors at a distance of less than 1 m from the protective field boundary can
dazzle the safety laser scanner and impair its detection capability.
b
Avoid retro-reflectors at a distance of less than 1 m to the protective field bound‐
ary.
b
If retro-reflectors are nevertheless mounted at a distance of less than 1 m from
the protective field boundary, add a supplement Z
R
= 200 mm to the protective
Supplement C to protect against reaching over
With a protective field installed horizontally, there is a risk of people reaching over the
protective field and thereby reaching the hazardous area before the safety laser scan‐
ner shuts down the dangerous state. You need to allow for this by incorporating a sup‐
plement into the calculation of the minimum distance. This will prevent people from
reaching over the protective field and getting into a hazardous situation (see
ISO 13857) before the safety laser scanner responds.
The necessary supplement to the minimum distance depends on the height of the pro‐
tective field’s scan plane. The supplement is larger for a lower installation height
1
than for a higher installation height
2
and
3
.
1
2
3
C = 1200
C = 850
C = 850
H
S
H
S
H
S
H
D
= 0
H
D
= 875
H
D
= 875
Figure 30: Mounting options for the scan plane
In summary, there are three common options for mounting the scan plane of the safety
laser scanner. The optimal mounting option depends on the particular application.
Table 5: Advantages and disadvantages of the mounting options
Installation position
Advantage
Disadvantage
Safety laser scanner low (H
S
< 300 mm)
Inclination of the scan plane
small (H
D
≈ H
S
)
Low external influence from
dazzling, no crawling beneath
possible
Larger supplement C
Safety laser scanner high (H
S
> 300 mm)
Inclination of the scan plane
small (H
D
≈ H
S
)
Small protective field supple‐
ment C
Risk of crawling beneath (front
and side)
Safety laser scanner low (H
S
< 300 mm)
Inclination of the scan plane
large (H
D
> H
S
)
Small protective field supple‐
ment C
Risk of crawling beneath
(front), possible external influ‐
ence from dazzling
H
D
= Detection height
4
PROJECT PLANNING
40
O P E R A T I N G I N S T R U C T I O N S | S300
8010948/ZA21/2020-06-18 | SICK
Subject to change without notice
