SICK C4000 Micro - Restart Interlock Configuration

Chapter 3 Operating Instructions
C4000 Micro/Basic/Basic Plus/Eco
14 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8009423/YT79/2016-03-14
Subject to change without notice
Product description
3.4.1 Restart interlock
The C4000 Micro/Basic has an internal restart interlock. The dangerous state of the
machine (1) is interrupted if the light path is broken (2), and is not re-enabled (3) until
the operator presses the reset button.
• If you use the C4000 Micro/Basic without internal restart interlock, then you must
implement the restart interlock externally, i.e. on the machine.
• Do not confuse the restart interlock with the starting interlock on the machine. The start
interlock prevents the machine starting after switching on. The restart interlock pre-
vents the machine starting again after an error or an interruption in the light path.
When using the C4000 Micro/Basic, you can implement the restart interlock in two diffe-
rent ways:
• with the internal restart interlock of the C4000 Micro/Basic:
The C4000 Micro/Basic controls the restart.
• with the restart interlock of the machine (external):
The C4000 Micro/Basic has no control over the restart.
The possible combinations are shown in the following table:
Restart interlock of
the C4000
Micro/Basic
Restart interlock
of the machine
Permissible
application
Deactivated Deactivated
Only if the light curtain cannot be stood
behind. Observe EN 60 204-1!
Deactivated Activated All
Activated Deactivated
Only if the light curtain cannot be stood
behind. Observe EN 60 204-1!
Activated Activated
All. The restart interlock of the C4000 Micro
handles the reset function (see “Reset”
below).
Always configure the application with restart interlock!
Ensure that there is always a restart interlock. The C4000 is unable to verify if the restart
interlock of the machine is operable. If you deactivate both the internal and the machine’s
restart interlock, the operators of the machine will be at an acute risk of injury.
The electrical connection of the reset button is described in chapter “Reset button” on
page 34.
Fig.
5
:
Outline drawing of the
protective operation
Notes
Tab.
4
:
Permissible
configuration of the restart
interlock of the C4000
Micro/Basic
a
WARNING