Chapter
4
Operating instructions
Flexi Classic
74
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8011509/YPP0/2015-10-26
Subject to change without notice
Special applications and
functions
4.9
Bypass
The bypass function bypasses the logic paths A/B in the UE410-MU/UE410-XU or the logic
path B in the UE410-GU and forces their safety outputs to logical “1” for 60 s. The bypass
function overrides the logic paths A/B in the UE410-MU/UE410-XU and forces the corres-
ponding safety outputs to logical “1” for 60 s. The bypass function can be implemented via
a UE410-8DI input extension module (switch position 8).
The bypass signal is limited to a duration of 60 s. After the period has expired, bypass ope-
ration can be activated again after deactivation.
•
On the UE410-GU the bypass function can only be implemented on the local cut-off path
via input B.
•
A bypass function on the UE410-GU that acts on the global cut-off path (input A) is not
permitted and will result in a configuration error (ERROR).
Ensure that there is no danger during bypass operation!
As long as the bypass function is active, the safety outputs of the UE410-MU/UE410-GU/
UE410-XU modules are activated. You have to ensure that there is no danger to persons or
parts of the machine or system during bypass operation.
The bypass function may only be activated by a key-operated switch with an automatic
reset and two levels or by two input signals that are independent of each other, e.g. two
position switches.
Check the connected key-operated pushbutton for bypass regularly!
=
Using organisational measures, ensure that the key-operated pushbutton for bypass is
actuated once after a certain interval. This is necessary so that the Flexi Classic can
identify an error condition of the key-operated pushbutton for bypass or an error condi-
tion in its connection cable that occurs up until then. The interval is to be defined to suit
the specific case dependant on the application.
=
Constantly check in the operating mode in which you have configured the bypass active
whether the bypass function can be activated and deactivated.
•
It must be possible to view the entire hazardous point when pressing the key-operated
pushbutton for bypass.
•
It may not be possible to actuate the key-operated pushbutton for bypass in the hazard-
ous area.
•
The safety controller ends the bypass automatically when an error occurs.
Notes
WARNING
WARNING
Notes
