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
.
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.
C
C
C
H
S
H
S
H
S
H
D
H
D
H
D
Figure 31: Mounting options for the scan plane
Table 6: 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
)
No 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
H
S
= Scanner mounting height
DANGER
Persons or parts of the body to be protected may not be recognized or not recognized in
time in case of non-observance.
If the scan plane is higher than 300 mm, it may be possible for people to crawl beneath
the protective field and reach the hazardous area.
b
Prevent people from being able to crawl beneath the protective field by mounting
the safety laser scanner appropriately.
b
If the protective device is mounted higher than 300 mm, additional measures
must be taken to prevent people crawling beneath.
For publicly accessible applications, the mounting height may need to be reduced
to 200 mm (see the relevant regulations).
Calculation of supplement C
Calculating the supplement C
b
If there is sufficient free space in front of the machine or system, use the value
1,200 mm for the supplement C.
b
If the minimum distance needs to be kept as small as possible, calculate C using
the following formula: C = 1,200 mm – (0.4 × HD)
where H
D
is the mounting height of the protective field.
PROJECT PLANNING
4
8013291/ZA19/2019-11-14 | SICK
O P E R A T I N G I N S T R U C T I O N S | S3000 PROFINET IO, S3000 PROFINET IO-OF
39
Subject to change without notice
