Mounting
Leuze electronic GmbH + Co. KG
ELC 100
15
5
Mounting
WARNING
Improper mounting may result in serious injury!
The protective function of the safety sensor is only ensured if appropriately and professionally
mounted for the respective, intended area of application.
Ä
Only allow the safety sensor to be installed by qualified persons (Necessary competencies).
Ä
Maintain the necessary safety distances (see chapter 5.1.1 "Calculation of safety dis-
tance S").
Ä
Make sure that stepping behind, crawling under or stepping over the protective device is reli-
ably ruled out and reaching under, over or around is taken into account in the safety dis-
tance, if applicable with additional distance C
RO
corresponding to ISO/EN ISO 13855.
Ä
Take measures to prevent that the safety sensor can be used to gain access to the danger
zone, e.g. by stepping or climbing into it.
Ä
Observe the relevant standards, regulations and these instructions.
Ä
Clean the transmitter and receiver at regular intervals: environmental conditions (see chap-
ter 12 "Technical data"), care (see chapter 9 "Care, maintenance and disposal").
Ä
After mounting, check the safety sensor for proper function.
5.1
Arrangement of transmitter and receiver
Optical protective devices can only perform their protective function if they are mounted with adequate
safety distance. When mounting, all delay times must be taken into account, such as the response times of
the safety sensor and control elements as well as the stopping time of the machine, among others.
The following standard specifies calculation formulas:
• ISO/EN ISO 13855, "Safety of machines - The positioning of protective equipment in respect of ap-
proach speeds of parts of the human body": mounting situation and safety distances
NOTICE
In accordance with ISO/EN ISO 13855, with a vertical protective field, it is possible to pass un-
der beams over 300 mm or pass over beams under 900 mm. If the protective field is horizontal,
climbing on the safety sensor must be prevented through suitable installation or with covers and
the like.
5.1.1
Calculation of safety distance S
General formula for calculating the safety distance S of an Optoelectronic Protective Device acc. to ISO/
EN ISO 13855
S
[mm]
=
Safety distance
K
[mm/s]
=
Approach speed
T
[s]
=
Total time of the delay, sum from (t
a
+ t
i
+ t
m
)
t
a
[s]
=
Response time of the protective device
t
i
[s]
=
Response time of the safety relay
t
m
[s]
=
Stopping time of the machine
C
[mm]
=
Additional distance to the safety distance
NOTICE
If longer stopping times are determined during regular inspections, an appropriate additional
time must be added to t
m
.
