Reset
When a protective device has sent a stop command, the stopped
state must be maintained until a reset device is activated and the
machine can be restarted in a second step.
The reset brings the protective device back to the monitoring state
after it has sent a stop command. The reset also quits the start-up
or restart interlock of a protective device, so that the machine can
be restarted in a second step.
The reset must only be possible, when all safety functions and
protective devices are functional.
The reset of the protective device must not introduce any move‐
ment or dangerous situations 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 oper‐
ated 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 triggering the protective device.
°
It must be ensured that no people are in the hazardous
area during or after the reset.
Resolution
The resolution of an active opto-electronic protective device (also
known as the sensor detection capability) is the minimum size of
an object for it to be reliably detected.
Response time
The protective device’s response time is the maximum time
between the occurrence of the event leading to the sensor’s
response and supply of the switch-off signal to the protective
device’s interface (for example OFF state of the OSSD pair).
Safety function
Function of a machine whose failure can result in an immediate
increase of the risk(s). (ISO 12100)
Scan cycle time
The scan cycle time is the time the sensor needs for a complete
scan of its detection area.
Example: Time required by the mirror of a safety laser scanner for
one rotation.
Stop Category 2
A controlled stop with power left available to the robot. The safe‐
tyrelated control system monitors that the robot stays at the stop
position.
Universal I/O
Universal I/O can be configured as universal input or as universal
output.
Warning field
The warning field monitors larger areas than the protective field.
Simple switching functions can be triggered with the warning field,
e.g. a warning light or an acoustic signal can be triggered if a
person approaches, even before the person enters the protective
field.
The warning field must not be used for safety applications.
GLOSSARY
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8025720/1A9R/2020-12-15 | SICK
O P E R A T I N G I N S T R U C T I O N S | nanoScan3 Tool - URCap
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Subject to change without notice
