DANGER
H
azard due to lack of effectiveness of the protective device
If there is a retroreflector in the protective field level (distance of the retroreflector from
protective field ≤ 6 m), it may not be possible detect people and parts of the body that
are to be protected, or it may not be possible to detect them on time.
b
Avoid retroreflectors in the protective field level if possible.
b
With retroreflectors at the protective field level: Increase overrun of the protective
field over the opening to be protected by supplement Z
R
= 350 mm.
DANGER
H
azard due to lack of effectiveness of the protective device
Devices with max. protective field range of 9 m: Strongly reflective surfaces (e.g. shiny
metal, tile) with a distance from the protective field ≤ 6 m can behave similarly to a
retroreflector if the laser beam hits the surface vertically. If the protective field is larger
than 50% of the effective protective field range in the direction of the laser beam which
is hitting the surface vertically, it is possible that persons and parts of the body that are
to be protected will not be detected or not be detected on time.
b
Avoid strongly reflective surfaces in the protective field level if possible.
b
With strongly reflective surfaces in the protective field level: Increase overrun of
the protective field over the opening to be protected by supplement Z
R
= 350 mm.
Protective field
T
he protective field must be designed so that it detects a person at a minimum dis‐
tance from the hazardous point. This distance is required to prevent a person or part of
their body from reaching the hazardous area before the end of the machine’s danger‐
ous state.
In access protection, the minimum distance typically defines the position at which the
safety laser scanner is mounted.
The protective field must be at least 900 mm high so that it is not possible to climb
over it.
Devices with max. protective field range of 9 m: The protective field must cover a mini‐
mum area so that the safety laser scanner reliably detects a moving person. The lower
edges of the protective field must be no more than max. 300 mm above the floor and
the upper edges of the protective field must be at least min. 1,400 mm above the floor.
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
1. Calculate the required minimum distance for your machine using the following for‐
mulas and examples.
2. Take this calculation and the specifications in these instructions into account
when mounting the safety laser scanner.
3. Take this calculation and the specifications in these instructions into account
when configuring the safety laser scanner.
Calculating minimum distance
T
he calculation of the minimum distance is based on international or national stan‐
dards and statutory requirements applicable at the place of installation of the machine.
PROJECT PLANNING 4
8021913/15ZW/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 | microScan3 – EFI-pro
45
Subject to change without notice
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