Mounting
Leuze electronic
RSL 410
40
7
Mounting
The safety sensor's protective function is only guaranteed when the device arrangement, configuration,
protective field dimensioning and mounting are coordinated with the respective application.
The installation work must only be performed by a competent person in compliance with the applicable
standards and these instructions. The mounting must be thoroughly inspected on completion.
You must observe and comply with the respective relevant machine-specific standards and regulations
(see chapter 16 "Standards and legal regulations").
Observe the basic information on mounting (see chapter 7.1 "Basic infos").
7.1
Basic infos
7.1.1 Calculation of safety distance S
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 standards specify calculation formulas:
• EN ISO 13855, "Safety of machines - The positioning of protective device in respect of approach
speeds of parts of the human body": mounting situation and safety distances
General formula for calculating the safety distance S of an Optoelectronic Protective Device acc. to
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]
= Machine stopping time
C
[mm]
= Additional distance to the safety distance
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.
Only allow competent persons to install the safety sensor.
Maintain the necessary safety distances (see chapter 7.1.1 "Calculation of safety distance S").
Make sure that stepping behind, crawling under or stepping over the protective device is reliably ruled
out and reaching under, over or around is taken into account in the safety distance, if applicable with
additional distance C
RO
corresponding to EN ISO 13855.
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.
Observe the relevant standards, regulations and these instructions.
After mounting, check the safety sensor for proper function.
Clean the safety sensor at regular intervals.
Environmental conditions: see chapter 15 "Technical data"
Care: see chapter 13 "Care, maintenance and disposal"
If longer stopping times are determined during regular inspections, an appropriate additional time
must be added to t
m
.
S
K T C
+
=
