![SICK C4-RD Operating Instructions Manual Download Page 21](http://html.mh-extra.com/html/sick/c4-rd/c4-rd_operating-instructions-manual_1264345021.webp)
Important information
DANGER
Hazard due to lack of effectiveness of the protective device
Systems of safety light curtains that operate in close proximity to each other can
interfere with each other.
b
Use appropriate measures to prevent systems in close proximity from interfering
with each other.
4.3.4.1
Using reversed direction of transmission
Using reversed direction of transmission
The direction of transmission of the system
"
can be changed during mounting by
switching the positions of the sender and receiver. With reversed direction of mounting,
the receiver
"
is not affected by the infrared light from the sender
!
.
"
!
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
r
s
r
Figure 13: Trouble-free operation due to reversed direction of transmission of system
1
and
system
2
4.4
Integration in electrical control
Overview
This chapter contains important information about integration in the electrical control.
Information about the individual steps for electrical installation of the device:
"Electrical installation", page 44
.
Requirements for use
The output signals of the protective device must be analyzed by downstream controllers
in such a way that the dangerous state of the machine is ended safely. Depending on
the safety concept, the signal is analyzed by safety relays or a safety controller, for
example.
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.
b
Make sure that the following control and electrical requirements are met so that
the safety light curtain can fulfill its protective function.
•
It must be possible to electrically influence the control of the machine.
•
The electrical control of the machine must meet the requirements of IEC 60204-1.
•
A restart interlock must be implemented depending on applicable national regula‐
tions or required reliability of the safety function. Because the safety light curtain
PROJECT PLANNING
4
8025644/19Z2/2021-03-09 | SICK
O P E R A T I N G I N S T R U C T I O N S | C4-RD
21
Subject to change without notice