SICK C 4000 Series

Operating Instructions Chapter 3
C4000
Product description
8 009 221/16-11-00 © SICK AG • Safety Systems • Germany • All rights reserved 13
3.4.1 Restart interlock
Fig. 5: Outline drawing of the
protective operation
The dangerous state of the machine () is interrupted if the light curtain () is disrupted
and will not be reinstated (
) until the user actuates the restart button.
The restart interlock can be implemented in two different ways:
· With the internal restart interlock of the C 4000:
The C 4000 controls the restart.
· With the restart interlock of the machine:
The C 4000 has no control over the restart.
The possible combinations are shown in the following table:
WARNING
Always configure the C 4000 with restart interlock!
The C 4000 is unable to verify if the restart interlock of the machine is connected. If you
deactivate both the C 4000 and the machine-internal restart interlock, the users and oper-
ators of the machine will be at an acute risk of injury.
The electrical connection of the restart button is described in the chapter “Reset button/
restart button” on page 34.
n
Device symbol C 4000 receiver, context menu Configuration draft, Edit, file card General,
option Restart interlock.
Reset
If you activate both the C 4000 and the machine-internal restart interlock, each restart
interlock will have its own button designated to it.
When actuating the button for the internal restart interlock
· the C 4000 will reset its switch outputs
· the light curtain changes to green
Restart interlock of
the C 4000
Restart interlock of
the machine
Permissible application
deactivated deactivated Only if the light curtain cannot be stood
behind. Observe EN 60204-1!
deactivated activated All
activated deactivated Only if the light curtain cannot be stood
behind. Observe EN 60204-1!
activated activated All. Restart interlock of the C 4000 handles
the reset function (see below).
T
a
b
.
1
:
P
erm
i
ss
ibl
e
configuration of the restart
interlock