Operating instructions

Operating Instructions Chapter 4
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 21
Subject to change without notice
Configurable functions
The possible combinations are shown in the following table:
Restart interlock of
the C4000
Restart interlock of
the machine
Permissible
application
Deactivated Deactivated Only if one cannot stand between the safety
light curtain and the machine. Observe
EN 60204C1!
Deactivated Activated All
A
ctivated Deactivated Only if one cannot stand between the safety
light curtain and the machine. Observe
EN 60204C1!
Activated Activated All. Restart interlock of the C4000 handles the
reset function (see “Reset” below).
It is imperative you configure the application with restart interlock if it is possible to
stand behind the light curtain!
The C4000 is unable to verify if the restart interlock of the machine is operable. If in appli-
cations in which it is possible to stand behind the safety light curtain you deactivate both
the internal and the external restart interlock, you will place the machine operator in acute
danger.
The electrical connection of the reset button is described in chapter “Reset button” on
page 58.
Device symbol C4000 Host (receiver), context menu Configuration draft, Edit, file card
General, option Restart interlock.
You can indicate the status “Reset required” using a signal lamp. The C4000 has a dedi-
cated output for this purpose. The electrical connection of the signal lamp is described in
chapter “Connection of a signal lamp to the output Reset required” on page 58.
You can define whether the operator must press the reset button, or press and release it
to start the function. If you configure Press, then the reset is performed before the
operator releases the reset button again. This can be useful if you want, for example, to
use a two-hand control unit also as the reset button for the safety light curtain.
Never configure Reset after press if it is possible to stand behind the safety light
curtain!
Reason: If pressing the reset button (without releasing it) is sufficient as the reset signal,
then the safety light curtain cannot differentiate the operation of the reset button from a
short-circuit to 24 V. In case of a short-circuit, the safety light curtain would be inadvertent-
ly reset. In this case the operator would be in serious danger.
Device symbol C4000 Host (receiver), context menu Configuration draft, Edit, file card
General, option Reset button active.
Tab.
4
:
Permissible configu-
ration of the restart interlock

WARNING

Recommendation
Note

WARNING
