DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of
non-observance.
Body parts to be protected may not be detected under coarse resolution.
b
Use a resolution of 70 mm or finer for hazardous area protection.
b
For hazardous area protection with a resolution of 70 mm: make sure that it is
possible to detect a human leg.
b
For hazardous area protection with a resolution of 70 mm: mount the safety laser
scanner at a height of at least 300 mm (height of the scan plane).
b
If it is not possible to mount the safety laser scanner at a height of at least
300 mm, use a finer resolution
see "Calculating required resolution", page 40
Calculating required resolution
If the height of the protective field (scan plane) is predefined and is less than 300 mm,
you can calculate the required resolution using the following formula:
d
r
= H
D
/15 + 50 mm
where:
•
d
r
= coarsest permissible resolution of the safety laser scanner in millimeters
(mm)
•
H
D
= height of the protective field above the floor in millimeters (mm)
b
The safety laser scanner’s resolution can be set to the predefined value d. If the
result d
r
does not match any of these values, choose a finer resolution (d ≤ d
r
).
4.3.6.4
Distance from walls
Overview
The availability may be impaired if the protective field stretches as far as a wall or a
different object. So, plan to have a space between the protective field and the object. A
distance of the TZ value is recommended to ensure availability. (TZ = tolerance range of
the safety laser scanner,
1
Figure 30: Distance of the protective field from the wall
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 | microScan3 Pro I/O
8025424/1ELL/2022-01-21 | SICK
Subject to change without notice
