![background image](http://html1.mh-extra.com/html/sick/2113101/2113101_operating-instructions-manual_1264685017.webp)
4.3.3
Protection against interference from systems in close proximity to each other
Overview
s
r
s
r
!
"
Figure 6: Preventing mutual interference from system
!
and system
"
The light beam of the sender of system
!
can interfere with the receiver of system
"
.
This can disrupt the protective function of system
"
. This would mean that the operator
is at risk.
Avoid such installation situations or take appropriate action, e.g., install optically
opaque partitions or reverse the direction of transmission of a system.
Important information
DANGER
Hazard due to lack of effectiveness of the protective device
Systems of single-beam photoelectric safety switches in close proximity to one another
can mutually interfere with each other.
b
Use suitable measures to prevent interference between systems in close proximity
to each other.
4.4
Integration in the electrical control system
This chapter contains important information about integration in the electrical control.
Information about the individual steps for electrical installation of the device:
.
Requirements for use
As the single-beam photoelectric safety switch is classified as a Type 2 device in accor‐
dance with IEC 61496, it must be monitored by an external test device. The test input
of the sender and a semiconductor switching output of the receiver are used for this
purpose.
To connect the single-beam photoelectric safety switch, refer to the corresponding oper‐
ating instructions for the test device or for the higher-order control system.
4.4.1
Switching outputs
Overview
Two switching outputs are provided for evaluation by an external test device:
•
Q
L1
/C
Switching output or IO-Link communication
•
MF
Switching output or configurable output
PROJECT PLANNING
4
8024678/2020-01-24 | SICK
O P E R A T I N G I N S T R U C T I O N S | L25
17
Subject to change without notice