WARNING
D
angerous state of the machine
If the control switch for restart or reset is operated while a person is in the hazardous
area, the machine could restart.
b
Place the control switch for restart or reset outside the hazardous area such that it
cannot be operated by a person in the hazardous area.
b
Place the control switch for restart or reset outside the hazardous area such that
the person who operates the control switch has a full view of the hazardous area.
Reset
NOTE
T
he reset function is often also called “preparation for restart”. In these operating
instructions the term reset is used.
If the restart interlock on the safety laser scanner (internal) is activated, and also a
restart interlock on the machine (external) is implemented, then each restart interlock
has its own control switch.
After operating the control switch for the internal restart interlock (with the protective
field clear), the safety laser scanner responds as follows:
•
The Protective field interrupted signal is canceled.
•
The LED Ë on the safety laser scanner illuminates green.
The external restart interlock prevents the machine from restarting. After resetting the
safety laser scanner, the operator must activate the control switch to restart the
machine controller.
The controller must be implemented such that the machine only restarts if the safety
laser scanner is first reset and then the control switch for restarting the machine con‐
troller is activated.
Reset signals
If y
ou operate the safety laser scanner using the “With restart interlock” function, then
after a protective field interruption and subsequent clearing of the protective field, it
requests a reset signal from the controller (Reset required). The safety laser scanner
responds to a change in signal edge from Low to High of the reset signal (not to the
signal level state).
WARNING
D
angerous state of the machine
If the reset signal is implemented as a single signal, an electromagnetic interference
signal could trigger a restart.
b
The reset signal must be fail-safe (single failure proof).
Further topics
•
"Me
asures to prevent unsecured areas", page 31
7.10 Field Sets
The number of field sets that can be configured depends on the safety laser scanner
v
ariant.
7 C
ONFIGURATION
78
O P E R A T I N G I N S T R U C T I O N S | S3000 PROFINET IO, S3000 PROFINET IO-OF 8013291/ZA19/2019-11-14 | SICK
Subject to change without notice
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