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Chapter
5
Operating Instructions
C4000 Select
30
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8012247/RI61/2007-11-30
Installation and mounting
The minimum safety distance is defined by several parameters, including:
stopping/run-down time of the machine or system
(the stopping/run-down time is shown in the machine documentation or must be
measured under worst case conditions.)
response time of the protective device (see chapter 11.2 “Response time” on page 58)
reach or approach speed
resolution of the safety light curtain
other parameters that are stipulated by applicable standards and regulations
5.1.2
Hazard approach
The minimum safety distance changes based on the implementation of the protective
device. Most applications use a perpendicular (e.g. vertical as shown below) mounting of a
safety light curtain. However, it may be necessary to install the safety light curtain in a
horizontal or angular orientation. The following figure provides examples of perpendicular
(vertical), horizontal and angular implementations of a safety light curtain.
Fig. 18: Installation approach
considerations for minimum
safety distance calculation
Limit of
protective
field
Hazardous
area
Direction of
penetration
Floor
D
S
H
AOPD
Limit of
protective field
Hazardous
area
Direction of
penetration
Floor
D
S
H
AOPD
Limit of
protective field
Hazardous
area
Direction of
penetration
Floor
D
S
H
AOPD
?
Perpendicular
Horizontal
Angular