Scanning Range And Protective Field Width; Minimum Distance From The Hazardous Point - SICK deTec4 Core Operating Instructions Manual

4
PROJECT PLANNING
4.3.1

Scanning range and protective field width

4.3.2

Minimum distance from the hazardous point

18 O P E R A T I N G I N S T R U C T I O N S | deTec4 Core
DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
Make sure that the following design requirements are met such that the safety
b
light curtain can fulfill its protective function.
Sender and receiver must be arranged such that persons or parts of the body
°
are reliably detected when they enter the hazardous area.
Reaching under, over, and around as well as moving the safety light curtain
°
must be prevented.
If people can stop between the protective device and the hazardous point
°
without being detected, check if additional protective measures (e.g., restart
interlock) are required.
Scanning range
The scanning range limits the maximum protective field width. The protective field width
cannot change during operation
The scanning range is reduced by using deflector mirrors and/or a weld spark guard,
see "Deflector mirrors", page 63
Protective field width
The protective field width is the dimension of the light path between sender and
receiver.
The protective field width is automatically calibrated when the safety light curtain is
switched on during initialization and must not be changed during operation.
DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
The safety light curtain can only be mounted on machines on which the protective
b
field width does not change when the safety light curtain is switched on.
A minimum distance must be maintained between the safety light curtain and the haz‐
ardous point. This distance is required to prevent a person or part of the body from
reaching the hazardous area before the end of the dangerous state of the machine.
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
Calculate the required minimum distance for your machine.
b
Mount the safety light curtain taking this calculation into account.
b
Calculating minimum distance
The calculation of the minimum distance is based on international and national stand‐
ards and statutory requirements applicable at the place of installation of the machine.
see "Technical data", page
and "Weld spark guard", page
52.
61.
8014253/YST2/2016-04-11 | SICK
Subject to change without notice