Installation; General Installation Procedures; Clearance; Distance From Reflective Surfaces - Leuze lumiflex Compact C14 Series Connecting And Operating Instructions

4

Installation

4.1

General Installation Procedures

Attention shall be paid to the general notes on safety given in Chapter 2.
Principally, all units shall be installed such that the hazard location can be reached only by the
interruption of at least one plane of light and sufficient clearance is maintained between hazard
location and the protection zone.

4.1.1Clearance

The clearance S is calculated in accordance with EN 999 according to the following formula:
S = (K x T) + C
where:
S Minimum clearance between the protection zone and the hazard location in mm
K Rate of approach by the body or the person in mm/ms
T Overtravel time of the machine + the response time of the optoelectronic protection device
(AOPD) in ms
C Allowance in mm, which depends on the detection capacity d of the AOPD
Depending on the differing applications (e.g. hand and finger protection, access protection), there
are differing approach rates K and allowances C applicable in accordance with EN 999. The fol-
lowing installation procedures take the formula into account to be used in each application case.
4.1.2 Distance from Reflective Surfaces
Reflective surfaces within the 4˚ transmission and reception cone can lead to reflections and hence
to a non-detection of bodies. It is for this reason that a minimum distance (a) must be maintained
between the optical plane of the COMPACT and such reflective surfaces as polished parts of
machines and receptacles for material. The greater the distance between transmitter and receiver,
the greater is the distance (a) which has to be maintained. The following diagrams illustrate the
correct installation and this distance (a) as a dependency of the width of the protection zone.
Leuze lumiflex COMPACT 59