SICK C4000 Fusion

Chapter 4 Operating Instructions
C4000 Palletizer Std./Adv.
C4000 Fusion
32 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012249/YT69/2016-02-25
Subject to change without notice
Configurable functions
4.4 Bypass
In some applications it is at times necessary to mute the protective field evaluation of the
safety light curtain.
 for access protection (Fig. 20), e. g. for the further transport of a pallet with a load that
has slipped
 for hazardous point protection (Fig. 21), e.g. in a safe setup operating mode on the
machine in which it is only possible to make movements in jog mode
When the bypass is active, the safety light curtain displays  Green and the 7Esegment
display of the receiver displays .
Switch the system to a safe condition, when using the bypass function!
As long as the bypass function is active, the safety light curtain does not detect any inter-
ruption in the protective field. You must ensure that other protective measures are forcibly
activated during the bypass, e.g. the safe machine setup mode, so that the system cannot
endanger persons or parts of the system during the bypass function.
The bypass function is only allowed to be activated as follows:
 using a key-operated pushbutton with automatic return and two positions
 using two independent input signals, e.g. two position switches or two safe PLC signals
 You must prevent continuous activation of the bypass by organisational means.
 It must be possible to view the entire hazardous area when pressing the key-operated
pushbutton.
 It is not possible to combine the bypass and PSDI mode functions.
 200 ms after switching off the bypass, the system is again in a safe status
(latency time).
Fig.
20
:
Sch
ematic layout of
the bypass function for
horizontal applications
Fig.
21
:
Schematic layout
of the bypass function for
vertical applications

WARNING
Notes
Bypass
inactive
Bypass
active

Bypass
inactive
Bypass
active
