SICK microScan3 Core I/O User Manual

Protective field The protective field protects the hazardous area of a machine or
v
ehicle. As soon as the electro-sensitive protective device detects
an object in the protective field, it switches the associated safety
outputs to the OFF state. This signal can be passed to controllers
resulting in the dangerous state coming to an end, e.g. to stop the
machine or the vehicle.
A horizontal or vertical protective field is required, depending on
the application. The electro-sensitive protective device can there‐
fore be mounted in horizontal or vertical alignment, depending on
the requirements.
Reference contour field The reference contour field monitors a contour of the environment.
T
he safety laser scanner switches all safety outputs to the OFF
state if a contour does not match the set parameters, because, for
example, the mounting situation of the safety laser scanner were
changed.
National and international standards require or recommend that a
reference contour is monitored, if the safety laser scanner is used
in vertical operation for hazardous point protection or for access
protection.
Reset When a protective device has sent a stop command, the stopped
s
tate 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
k
nown 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).
Restart interlock The restart interlock prevents the machine from automatically
s
tarting up, for example after a protective device has responded
while the machine is operating or after changing the machine’s
operating mode.
The restart interlock can be implemented in the protective device
or in the safety controller.
A command to reset the protective device must be given, for
example using a reset pushbutton, before the machine can be
restarted.
GLOSSARY 15
8025870/2020-09-04 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 Core I/O
155
Subject to change without notice

SICK microScan3 Core I/O Specifications

General

Brand	SICK
Model	microScan3 Core I/O
Category	Scanner
Language	English