°
S = minimum dis
tance in millimeters (mm)
°
T = stopping/run-down time for the entire system in seconds (s)
(Response time of the safety laser scanner + machine’s stopping/run-down
t
ime, incl. response time of the machine’s control system and signal propaga‐
tion time)
°
T
Z = tolerance range of the safety laser scanner, see "Data sheet", page 178
°
Z
R
= supplement for reflection-based measurement errors in millimeters
(mm)
°
C = supplement to protect against reaching over in millimeters (mm)
The reach/approach speed is already included in the formula.
Supplement Z
R
f
or reflection-based measurement errors
All devices: If there is a retroreflector in the vicinity of the protective device (distance
of the retroreflector from protective field ≤ 6 m), you must take the supplement Z
R
=
350 mm into account.
Devices with max. protective field range of 9 m for stationary applications: 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 protective field range in the direction of
the laser beam which is hitting the surface vertically, you must take supplement Z
R
=
350 mm into account in this direction.
4)
Supplement Z
R
must be upheld at least at a
width of 3 × d (d = set object resolution) around the laser beam which hits the surface
vertically.
Supplement C to protect against reaching over
U
nder certain circumstances, a person can reach the hazardous area by reaching over,
before the protective device stops the dangerous state. Supplement C prevents this.
Figure 26: Protection against reaching over when mounted low (dimensions in mm)
4)
T
he protective field range depends on the set scan cycle time and resolution.
PROJECT PLANNING 4
8025424/1ELL/2022-01-21 | SICK 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
37
Subject to change without notice
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