Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
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Chapter 2 Safety Concepts
Installation Requirements
The GuardShield safety light curtains must be installed in accordance with
applicable regulations and standards.
While the GuardShield safety light curtains can be used for SIL 3, PLe, and
Category 4 applications, the installer must comply with the minimum (safe)
distance requirements. For example, according to EN ISO 13855, if installed in
the European Union.
The installed system, including the safety control system and the means by
which the machine stops, must achieve the needed safety Performance Level.
The GuardShield safety light curtains are only one element in the safety
system. Additional guidance can be found in publication
).
Possible Misuse
GuardShield safety light curtains are used as electro-sensitive protective
equipment in the sense of the Machinery Directive. These devices are only used
in applications such as:
•
POC device
•
Access control device
•
Hazardous area control device
•
Machines, which eject materials, swarf, or component parts
•
Risk of injury from thermal or other radiation
•
Unacceptable noise levels
•
Transparent objects are detected
•
An environment, which exceeds the specification, limits provided in
.
Some, but not all, possible limits are electrostatic discharge, radio frequency
interference, vibration/shock, ambient light, pollution, temperature, and
humidity.
Without additional measures (IEC 62998), GuardShield safety light curtains
are not designed to be used for the following applications:
•
Outdoors
•
Under water
•
Explosive atmospheres
•
Altitudes over 3000 m (1.86 miles) above sea level
•
With enhanced ionizing or radar radiation.
ATTENTION:
The following applications and/or environmental conditions can
lead to misuse and potentially cause severe injuries or death (for more
information see IEC 62046).
