SICK microScan3 Core I/O

In mobile hazardous area protection, the minimum distance typically defines the pro‐
t
ective field length required. When calculating the protective field length, the impact of
turning must be considered separately.
If you define a number of monitoring cases with different protective fields, you must
calculate the protective field size separately for each protective field used.
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.
Supplement Z
F
f
or lack of ground clearance
This supplement is necessary, because, generally, a person is detected above the foot
and so the braking process cannot take account of the length of the foot in front of the
point of detection. A person’s foot could be injured if a vehicle has no ground clearance.
F
Z
L
S
F
B
Figure 33: flat-rate supplement ZF for lack of ground clearance
B
F
ground clearance
S
L
protective field length without a supplement for lack of ground clearance
Z
F
supplement for lack of ground clearance
The flat-rate supplement for a ground clearance below 120 mm is 150 mm. T
his
supplement may be reduced further in individual cases. Read the supplement actually
required for your vehicle’s ground clearance from the following graph.
PROJECT PLANNING 5
8025870/2020-09-04 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 Core I/O
47
Subject to change without notice