The reset of the protective device must not introduce any movement or dangerous situ‐
ations itself. The machine is only permitted to start after the reset once a separate start
command has been sent.
•
Manual resets are performed using a separate, manually operated device, such as
a reset pushbutton.
•
Automatic resets by the protective device are only permitted in special cases, if
one of the following conditions is met:
°
It must not be possible for people to be in the hazardous area without trigger‐
ing the protective device.
°
It must be ensured that no people are in the hazardous area during or after
the reset.
Each safety output of the safety laser scanner is equipped with a configurable internal
restart interlock.
When the internal restart interlock is used, the following sequence is the result for the
machine operator:
1
A safety output of the safety laser scanner switches to the OFF state if there is an
interruption in the protective field.
2
The safety output remains in the OFF state when there is no longer an object in
the protective field.
3
The safety output only switches back to the ON state when the operator presses
the reset pushbutton, which is outside the hazardous area. If there is an object in
the protective field when the reset pushbutton is pressed, the safety output stays
in the OFF state.
4
After the reset, the operator can restart the machine in a second step.
DANGER
Hazard due to unexpected starting of the machine
b
Affix the control switch for resetting the restart interlock outside the hazardous
area.
b
Make sure that the control switch cannot be activated by a person who is in the
hazardous area.
b
Also make sure that the person activating the control switch has a complete view
of the hazardous area.
4.5.7
External device monitoring (EDM)
The external switching elements (external device monitoring, EDM) must be inspected
in line with the regulations which apply at the place of installation or the required relia‐
bility of the safety function.
The external device monitoring (EDM) monitors the status of downstream contactors.
In order to use external device monitoring, positively guided contactors must be used to
switch off the machine. If the auxiliary contacts of the positively guided contactors are
connected to the external device monitoring, the external device monitoring checks
whether the contactors switch correctly when the OSSDs are switched off.
NOTE
Each OSSD pair in the safety laser scanner is equipped with a configurable internal
EDM.
4
PROJECT PLANNING
52
O P E R A T I N G I N S T R U C T I O N S | outdoorScan3 Core I/O
8023152/160F/2019-11-14 | SICK
Subject to change without notice